Toby Satterthwaite: Thank you.
Federico Leo Redi: Thank you, so the recording has started the please be aware of this, but you probably received the message on your computer so yeah, the floor is yours, thank you very much.
Toby Satterthwaite: Sure, thank you very much.
Toby Satterthwaite: Hello everybody, my name is toby Sarah point from the.
Toby Satterthwaite: mercy, as you know, the University of Cambridge on today i'd like to talk on behalf of my co collaborators.
Toby Satterthwaite: about the newest project and, specifically, some of the various geometries for it, that we are investigating and House has these geometries may be to the observations of beyond the standard model along the particles.
Toby Satterthwaite: So, given that this is a dedicated along the particle workshop, I will save you the having to go over the motivation for why we're searching for long the particles.
Toby Satterthwaite: But in very broad strokes i'd like to just narrow it down to say this, which is that we've seen so far in this workshop that previous searches for beyond the standard model along the particles.
Toby Satterthwaite: Have those far been hindered by experimental constraints, and so our goal is to ask the question how can these constraints be addressed with a modest investment in electronics and civil engineering.
Toby Satterthwaite: And so, in this talk i'd like to talk a little bit about the different geometries that we are investigating to do this.
Toby Satterthwaite: How they will hopefully minimize some of the some of the costs and maximize them have the ability, that we have to observe these particles.
Toby Satterthwaite: And so i'm really going to only be talking about two main geometry, is that we are investigating for new business.
Toby Satterthwaite: A new business in broad strokes, is this idea to extend the sensitivity of the Atlas experiment by installing new detectors further away from the interaction point.
Toby Satterthwaite: But however, where we install those sectors is still a bit of a work in progress and so we're investigating a cavern stealing configuration and a Pex 14 service chef configuration.
Toby Satterthwaite: The Cameron ceiling configuration hypothesizes installing rpc detectors along the ceiling of the Alice govern.
Toby Satterthwaite: While the px 14 service chef configuration looks at installing them and for tracking stations that are different heights above the cavern along the px 14 service shaft down to atlas.
Toby Satterthwaite: These directors will likely be held up by ballet much the way rock climber, would lay off to the north, face to the Eiger and each of these.
Toby Satterthwaite: Each of these configurations that's various a strong points and drawbacks, as I think we're all aware, in order to detect long the particles you'd be want to look at having a large coverage and solid angle.
Toby Satterthwaite: And a relatively large distance from the interaction point where these long the particles might be produced.
Toby Satterthwaite: maximizing both using the same time over is not necessarily feasible and so, in the first scenario.
Toby Satterthwaite: which they carry the current ceiling scenario that we looked at on the right hand side here we looked you have a large coverage and solid angle, with a relatively modest distance major action point roughly 20 meters.
Toby Satterthwaite: Whereas in the second scenario showing the left hand side here we look at a more narrow covered and solid angle, which I met with a much larger extension from the interactive point say about 25 to 80 meters for that IP.
Toby Satterthwaite: So for these studies, where we look at the sensitivity of these two geometries we're always looking for the observation of a hates produced bsm llp.
Toby Satterthwaite: And so we are using Monte Carlo simulation data that have atlas la la T files, we have spiffy as well in the ggs higgs production scenario and then Pitsea and pow hug.
Toby Satterthwaite: In the bbs or 58 and the ggs scenario how hagen the bbs scenario to calculate the matrix elements for the production of these lps and then with.
Toby Satterthwaite: Each of these events, we forced the decay from each llp into a bb bb pair and let it.
Toby Satterthwaite: Let it figure out what the apartheid shower is, which are the final state charged particles, that we can look at.
Toby Satterthwaite: After these signal after these the signal events current studies investigated range of LP masses from five to 50 gv.
Toby Satterthwaite: We see various sensitivity to these different models so, our main concern oh yeah and so.
Toby Satterthwaite: To these on signal events, of course, we have to apply cuts in our simulations much as you would in a real analysis these cuts are aimed at discriminating against some background events.
Toby Satterthwaite: In a few moments, my colleague john Byrne will talk about his studies at the background events in this in this region.
Toby Satterthwaite: But right now we're really only focusing on a couple of cuts, so our hope is that, given the latency of the experiment and given it seems just the cables of the tracking stations from atlas we could help you.
Toby Satterthwaite: integrate with a level one trigger and applying that cut so we would have been that kind of, say, an excess of 30 ged.
Toby Satterthwaite: And then we just look at to isolation cuts, where we want this reconstructed llp to be at least Dr distance of 0.5 from its newest jets and from its nearest charged particle I just to hopefully.
Toby Satterthwaite: reduce any experimental constraints of reconstructing near any any gender charged particle discouraged, at the same time, these cuts preserve.
Toby Satterthwaite: Roughly 30% of our single events, as you can see where we're just looking at 10 2030 and 40 gv O P, which each follow a very similar very similar pattern along these plots and, as I said, john was speaking about how these cuts can help us discriminate against our background events.
Toby Satterthwaite: So in each of our scenarios were really concerned with observing the final stage charged particles that come out of the decades of these lps.
Toby Satterthwaite: And so I wanted to just help drive the point home show a couple of the event displays in the left hand side here to show what sorts of events you might be looking at.
Toby Satterthwaite: You can see that the current Alice detector is shown in these.
Toby Satterthwaite: The Green curve here, however we're concerned with the case which could occur anywhere after its for texting limit, which is about seven and a half meters from interaction point shown on the dotted line here.
Toby Satterthwaite: And llp event which is this this dashed line here.
Toby Satterthwaite: What might come from the IP escape the Atlas detector without being detected and then decay anywhere between this protecting limit and the end the bounds of the back, half of the of the cavern right here.
Toby Satterthwaite: So the solid line here shows the cavern ceiling track and station that we're looking to implement also shown a left hand side here just the other cross section.
Toby Satterthwaite: And we also have the for tracking sessions for newbies shown, but right now i'm just want to talk about the caverns healing geometry, so we can ignore those.
Toby Satterthwaite: And these purple just these purple decay products, as you can see, are passing through that cavern ceiling tracking station, so this isn't about that we might hope to be able to they might have looked to be able to observe.
Toby Satterthwaite: And again, this assumes that Alice is able to be used to discriminate against background because we're looking for the case which which occur after atlas.
Toby Satterthwaite: So, the key question that we're looking to ask right now is for what branching ratios might we have the sensitivity to observe a certain number of events at angellist the conditions were hoping to install this package to DHL hd.
Toby Satterthwaite: And so we are hoping that we could be sensitive enough to observe these branching ratios okay just chillin with particle production.
Toby Satterthwaite: So this is for three and verse out of Barnes of collisions and in the blue curve we're looking at for events to observe over this run of data, taking which would be a very optimistic assumption that it's a background free experiment.
Toby Satterthwaite: In this configuration where we're just looking within the Cameron ceiling we don't necessarily believe this might this will be true so in the red curves we also show say 50 events that are being produced hopefully.
Toby Satterthwaite: It show a more more realistic and a more conservative background dysfunction so as you can see we're hoping to be sensitive at the 510 40 and 55 G D mass exodus llp.
Toby Satterthwaite: To branching ratio is, ranging from about attend to the four to 10 to the minus 10 to the minus four to 10 to the minus X, depending on the bass and depending on the.
Toby Satterthwaite: On the on the scenario Here we see relatively competitive credit sensitivity, compared to say the experiment and a very drastic increase from and sensitivity from the experiment.
Toby Satterthwaite: One thing I do want to note on these plots because this is very much a work in progress is that these are parked on level.
Toby Satterthwaite: And so we are looking for the decades of neutral lps.
Toby Satterthwaite: That, of course, that occur between the Atlas protecting limit and the cavern ceiling and which point towards the cabin ceiling in these spots, right here, we are not looking at the park on showers.
Toby Satterthwaite: Until these final state charged particles i'll speak about those in a moment for my next set of lots of a right here is just a very first pass.
Toby Satterthwaite: Investigation of how many of these lps are pointing in the correct geometric geometric region and passing these cuts fish that we might help to detect them with a cavern ceiling geometry.
Toby Satterthwaite: The next thing I want to talk about is this other geometry, which is the px 14 service economic trigger where instead of.
Toby Satterthwaite: Implementing the cavern ceiling geometry, so you can ignore this subtle line here, instead, we believe, for tracking stations of our PCs at various points along the px 14 service shop.
Toby Satterthwaite: And so, for here, we could have to possible to K regimes, you can imagine the case that occur anywhere between the Alex purchasing limit and the cavern ceiling bounce as before.
Toby Satterthwaite: Or you can imagine the case which occur between tracking stations here and so right now we're looking at one of the first scenarios, where we can hope to detect this llp right here, which would be.
Toby Satterthwaite: which would be observed and it's charged particles, but the first track and station.
Toby Satterthwaite: And then, no signal the other track and stations along the bottom here we're just looking at slices at a bird's eye view I constant why it's a constant distance from the from underground up to the ground.
Toby Satterthwaite: To see where the intersections are in the first recommendation and then this particle just travels around and you can't find it later on.
Toby Satterthwaite: Thank you for the for the warning of the time doing well, and so this we are looking at finding the final say charged particles that would pass through these tracking stations.
Toby Satterthwaite: This is the decay regime where we're looking between the vertex and limit and the end of the cavern.
Toby Satterthwaite: We could also hope to look between tracking stations, so that we indicate between the first and the second the second or the third or the third and fourth back stations.
Toby Satterthwaite: Where we use the earlier tracking stations to help discriminate against background, so in this event, we could see that there would be no signal the first tracking station.
Toby Satterthwaite: ID came between the first and second, and then a number of final state charged particles, which would be observed with a second, third or fourth tracking stations, as you can see, on this cross section here.
Toby Satterthwaite: So again, we can ask ourselves the same questions for what branch and ratios, but we have the sensitivity to observe for events at hulu missions.
Toby Satterthwaite: For which are present these blocks to investigate 10 2030 and 40 GE for hgtv LP masses.
Toby Satterthwaite: In the 20 and 40 GB lps variables to crew compare ourselves to the limits proposed by Tuzla for their detector.
Toby Satterthwaite: But they're also looking to observe for events here we're showing just for events on because we believe that, at least in the shaft only Cameron area for the shaft only take a regime there would be there be less background.
Toby Satterthwaite: And we're also comparing it to atlas results in this this purple region here where they've excluded these branching ratio is by looking for jets displace justin the gun spectrometer.
Toby Satterthwaite: Again this is how this is now part time part time shower level results which look for these final stage charged particles interact intersecting and it was tracking stations.
Toby Satterthwaite: And, as I said, we have a very nice very nice results when compared to some some existing the detectors and some other proposed future detectors.
Toby Satterthwaite: And I would just like to know that there is a bit of odd behavior if you, as you probably noticed at the very high, and in some cases very low proper lifetime region.
Toby Satterthwaite: This is just a limit of statistics and what we've been able to run on the grid so far, and it is a work in progress it's smooth these curves out we're most interested in this region, right here, where we're able to compare ourselves to existing and possibly future results.
Toby Satterthwaite: And so, finally, I just want to talk a little bit about the outlook, so, as I said, both of these venture configurations for a new job very exciting potential for observing down the Center model lps.
Toby Satterthwaite: Whether we are able to install detectors along the cavern she's dealing or actually believed them down into the service shop, we see some very exciting.
Toby Satterthwaite: sensitivity that would drastically extend what we have so far with yes experiment work for parts on our level results is ongoing for the ceiling geometry.
Toby Satterthwaite: And as his work to understand the background in this in this region in a few moments, my colleague john will take it over to talk about.
Toby Satterthwaite: What background events might be present in this region and then just after him Professor ollie branch will take it over to talk about a prototype detector that we are in the process of constructing.
Toby Satterthwaite: With the effort to actually calibrate these studies and measure the amounts of background in the region so we're very excited about this, and we hope that you are to this point i'm happy to take any questions that might be lingering before passing the baton to john.
Louie Dartmoor Corpe: Okay Thank you so much toby for this tool clutches very much on time as well, which is much appreciated.
Louie Dartmoor Corpe: Okay, we can start with the questions and we have already one hand raised from Margaret Please go ahead.
Louie Dartmoor Corpe: hey.
Margaret Lutz: If I can ask them any question that might have been actually answered in the past few years and i've erased it for my brain and so, in the event that if you're.
Margaret Lutz: Trying to install in the Atlas shaft and then for some reason, some sort of sector system needed to be taken out to like if there was some you know, like.
Toby Satterthwaite: Yes, yes, yes.
Margaret Lutz: Would you have to take out your whole detector.
Toby Satterthwaite: Yes, so this is one of the main concerns that we're looking at it's a question that comes up often as i'm sure you can imagine the detectors would be blade down.
Toby Satterthwaite: Using sort of a similar technology to rock and roll might do, and this would give us the capability to remove the detectors relatively quickly.
Toby Satterthwaite: By placing the backup out of the shop and putting them, you know essentially off to the side we're investigating a couple of ways in which we could.
Toby Satterthwaite: Try to minimize the space of these attackers to take on the ground level i'm looking at some kind of, say, you know unfurling or extending extending geometries so that they give you.
Toby Satterthwaite: The best chance of being stored properly on the surface level but yes, the ability to take eight hours out these records out relatively quickly is certainly something but we're looking at, and you know local go forward without.
Margaret Lutz: Okay, thank you.
yeah.
Louie Dartmoor Corpe: We have time for another question, and if not, I have one that i'd like to ask, so, but I want to turn the chance first.
Louie Dartmoor Corpe: Okay, so my question what people think of others is so you mentioned the potential of using atlas to reject background.
Louie Dartmoor Corpe: Yes, like pragmatically, so this means plugging in a new.
Louie Dartmoor Corpe: trigger system, so you can kind of figure it out figure out if if you can use this as a trigger or how would you think the to basically.
Toby Satterthwaite: yeah yeah so in terms of rejecting background, this is sort of one of the scenarios that we're looking at.
Toby Satterthwaite: Which is why, for example, we propose what i'm trying right now, which is looking for dedicated between the first and the second track ization is this just, for example, does not require using.
Toby Satterthwaite: Now let's do reject background right, because we can do that with the first dragon station in terms of the more optimistic scenarios, where we use that list to reject background.
Toby Satterthwaite: We believe, are we hope that it is possible to link that attack drug for Level one trigger system of less.
Toby Satterthwaite: Just because of the latency there, I mean just the length of the cables you believe that this hopefully possible and it's something that we're investigating right now I see john also has his hand raised and i'm sure you'd like to chime in.
Louie Dartmoor Corpe: Yes, exactly yeah.
Louie Dartmoor Corpe: john if you went into being, please go ahead.
Jon Burr: yeah so just add quickly yeah so um as Tony says the end the shutdown the Virgin you don't need the Atlas atlas to form the feature that you did you do still use information recorded from the detector at the selections, though.
Jon Burr: So the part of the idea is that you are close but you're always close with that to atlas to be well within the other one nathan's here.
Jon Burr: So I don't there shouldn't be a problem to us and move us to a trigger because you don't have to ask you have to ask sort of more difficult questions about what we could do.
Jon Burr: How.
Jon Burr: What were you expecting to be in the oven to produce but it's definitely within reach.
Louie Dartmoor Corpe: And I guess the other question is, are you already in contact with the people in charge of picking up other subsystems to the l one trigger.
Jon Burr: yeah I think we spoke more than me okay.
Louie Dartmoor Corpe: Because we can always come back to that and, conversely, could you in principle use a new, this is a cosmic veto fatness.
Jon Burr: In a while if it's in the.
Jon Burr: In the geometry that toby shows with the county probably so sharp I won't be.
Jon Burr: able to solve it about point one so yeah fair enough.
Louie Dartmoor Corpe: Although the shaft itself is probably the biggest source of cosmetics right, you would have fewer going through that.
Louie Dartmoor Corpe: I mean from from my experience you the shaft is where most of the customer has come through that actually here let's say.
Louie Dartmoor Corpe: hey I, like you wanted to intervene on this.
Oleg Brandt: i'm not really into in the rain just to.
Oleg Brandt: Just to add.
Oleg Brandt: That, if the trigger direction is.
Oleg Brandt: Not only I mean if you if you place a trigger line from outlets for my newest to atlas, we should also make a paycheck so.
Oleg Brandt: yeah, of course, also give us the possibility to trigger the delta for newbies for.
Oleg Brandt: events that are interested.
Oleg Brandt: And that are interesting from the perspective so yeah.
Oleg Brandt: don't make sense, whether it's for cosmic so for something else that.
Exactly.
Louie Dartmoor Corpe: Okay, great so we have still other opportunities to discuss other aspects of a new business and further questions, so I propose that we move to john's talk on their simulation studies, so thank Thank you again.
Toby Satterthwaite: This room yeah Thank you.
Jon Burr: me share my screen.
Jon Burr: Okay, have you can see that.
Louie Dartmoor Corpe: Yes, we can so.
Louie Dartmoor Corpe: Go ahead.
Jon Burr: So yeah as as Tony said i'm going to be talking mainly about the simulation of the main backbones we expect to see in the lupus.
Jon Burr: say I won't do too much introduction to a new bits of justification, I assume, everyone here is fully sold on the idea of looking for long with particles and to be a pretty good.
Jon Burr: introduction to the idea of a new business in general, so i'll just go straight in so as you saw with toby.
Jon Burr: toby is tall, for the moment, be a newbie sensitivity estimates will assume that we can say something interesting about discovery and with an observation of either four or 50 events in the universe detector.
Jon Burr: So the sort of vague idea of where these numbers come from for events implies, you can just be completely background free and 50 events implies, you can have a fairly low background.
Jon Burr: This is based on a data driven extrapolation from the atmosphere spectrometer search, which is linked here and got better sensitivity popped here.
Jon Burr: Well i'll talk about here is sort of order of magnitude background estimates based on simulation and you know, mostly a very simple geometric simulation of this attacks are not going through again for.
Jon Burr: Okay, so what is the main background, so if we take the signal sample that toby was also using where you have some scale or possible.
Jon Burr: So you've got some pigs became he became some neutral on the article expand the case to charge final states.
Jon Burr: The experimental signature of this is a reconstructive vertex.
Jon Burr: Behind one tracking there, but also that will require a trip to be a neutral language files for you can require that goes to another tracking where where you see nothing so.
Jon Burr: Basically, requires there to be a vertex that appears sort of from nothing.
Jon Burr: Now what the standard model, what we have in the standard model to produce this you either have so you need something reasonably long lived.
Jon Burr: And, and for this case, the main backgrounds come from the decays of cables or interactions between neutrons okay lungs and the air now obviously you're talking about has water particles being produced so they have to pass through the color amateur without interacting.
Jon Burr: This comes at a price and we've got about 9.7 radiation lengths.
Jon Burr: So this gives you a reduces affect your background already by a factor of about six times 10 to the minus five, and this is a this number is also an approximation, because it it's really only true for these zero different each of these this is larger.
Jon Burr: The reduction factor is larger.
Jon Burr: Okay, so.
Jon Burr: Just a quick slide on the maths, which again probably isn't too i'm familiar to people, but the probability to.
Jon Burr: detect one of these things so for decay on interaction to happen depends on the length of which you enter the volume the length of what you leave the active volume.
Jon Burr: And then the combination of the chances for an interaction and the decay Okay, obviously we only consider for K loans, because neutron lifetime was way too long.
Jon Burr: and interactions take them for the PG with a bit of a back of the envelope estimate to convert from pi on our interactions to carry on.
Jon Burr: Okay, and so, what are the geometries that we're using here not looking at the cabin and ceiling geometry that toby shows, and instead considering two options, one which we call.
Jon Burr: The Kevin plus shaft geometry, which is where you allow you consider this area within the cabin to be passing off the neutral volume.
Jon Burr: And this is saying that you assume that you can use the outer layers of the me on spectrometers your Vito layers.
Jon Burr: And so here, we take the edge of this to be about the edge of the existing episode six thing efficiency was around which is around a radius of about seven and a half meters.
Jon Burr: And the show after me you assume that this gives you too much background and so instead of you only use the numerous layers themselves for the veto.
Jon Burr: And just comment on what the shading here means blue is way you've got this sort of direct view of the interaction point in the Green, you have further levels of concrete yielding.
Jon Burr: And just to give you a vague idea of what you're talking about for the probability of an individual particle to you know these background particles to be detected from this.
Jon Burr: These graphs look a little bit messy at first, but try and talk you through them, and so this is the probability to see a decay on interaction as a function of the eater of the particle this is averaged over the fibers.
Jon Burr: So.
Jon Burr: The black lines here show you in solid, the amount of concrete the past three so you can see, at the very low end range where you actually a shielded by concrete.
Jon Burr: You have very little background guessing through that it's drops off incredibly quickly and then you have the entry and exit lines which are dashed dotted for entry and exit, so this is just demonstrating the.
Jon Burr: The fact that your obviously your background and and be just signal a much larger in areas for your videos your volume is just larger and then.
Jon Burr: You have the total came along and green and the neutron interactions in bed the kale international orange and the counter case and blue so yeah either considering these two lines together or breaking down the pay on in town into it's the case and interactions.
Jon Burr: Okay, so so as these backgrounds, you need to make selections using the atmosphere text as well, so as we actually had discussion just at the end of the last talk.
Jon Burr: The new base will be capable of triggering atlas and indeed the reverse is true as well, so we can use selections Based on this information and.
Jon Burr: The main handle here is the met the main source and background is going to be coming from the neutral okay on the past few the color amateur.
Jon Burr: There is obviously contribution from real neutrinos as well, but this is lower, and there will be contribution from this measurement which isn't treated hair so that's another thing to bed at night.
Jon Burr: Another thing you can select Thomas the isolation, so in the background you're probably most likely to producing these sort of hydraulic particles, along with other ones who as parts of gets.
Jon Burr: And so here we're just reacting selection is to be used from this atlas but beyond spectrometer search and just removing event square the nutrient okay long is close to object or charged particle track.
Jon Burr: Okay, so just going straight into looking at cup flows and so just interpret these a bit, these are scaled up to 3000 up, so this is a typo $3,000 spent a bomb or fee invest at the band's not 3000 rounds.
Jon Burr: So we've got a few filtering cuts for the generation so matt Griffin 10 etc, and then you've got requirements that this falls vaguely into the right area.
Jon Burr: And then your main reduction etc comes from this requirement that it survives to kind of reset.
Jon Burr: And then you have, at the end these four we have four different isolation categories that we can consider one way you require only the jess isolation one way you require.
Jon Burr: Only and most one charge classical track one at least zero charge no touch multiple tracks and then the tightest selection is where you have no debt or no charged particles.
Jon Burr: Okay, and the shaft only to know is simmers slightly lower numbers and surprisingly, of course, you may already be noticing the scales here we're still talking orders of you know, tend to the four events, so this is quite high.
Jon Burr: So.
Jon Burr: The first thing to know here is the background predictions of here about two orders of magnitude higher from simulation and from this.
Jon Burr: admitted the back of the envelope but.
Jon Burr: production from the mute meal spectrometer search but yeah back of the envelope two orders of magnitude is still quite significant discrepancy.
Jon Burr: If we assume that we can remove the Kanaan decays because they're quite distinctive just clean to track events you're still looking at about 1500 background events in the shop down the geometry.
Jon Burr: Which if true makes it rather hard to claim that you could really do a discovery with 50 events.
Jon Burr: That does assume the older decays and interactions will produce charged final states and this isn't really entirely true you can get neutral into neutral.
Jon Burr: entirely mutual fund foreigner states from hydraulic interactions, and so we do also then maybe need to look to further reduction from.
Jon Burr: information in a new list and atlas so within the numis there'll be the shape of the event will give you something for the past when it hits and the detector.
Jon Burr: This will probably look a bit different between the bb bb decays the K long decays and the air interactions.
Jon Burr: Another thing that might be quite interesting is the beater of this particle a new bus will have pretty good timing resolution, and so we will be able to measure this point accurately.
Jon Burr: And this is going to be way you expect you expect your signal to be rather more rather heavier than your background so actually requiring.
Jon Burr: things to be arriving a little bit later this text and might be quite useful handle to us, and we also have the space to tighten the next election a bit so just to delve into that one a bit first.
Jon Burr: The signal drops a lot more slowly than the background so here signal split into gta and phoebe is production modes.
Jon Burr: And all of this is set for llp massive 40 TV and the lifetime of hundred meters.
Jon Burr: But the the shape of these curves is kind of doesn't really care too much about those parameters.
Jon Burr: As you can see that, for the signal this is dropping relatively slowly, but the background drops, you know it's been pretty pretty quickly, as he would probably expect.
Jon Burr: Another small caveat is these Berta plots for a bit old and they're made when we were using the default value for the analyst radius of them, but a slightly larger this is that should be a minimal effect, it will be an overall scaling to the.
Jon Burr: To the numbers of events here.
Jon Burr: And then also just the comment or what I was saying about how to what what these things might look like in the movie themselves.
Jon Burr: We did a very simple jam for model here just firing neutrons and K long's at a cylinder there in GM for and looking at the final charged multiplicity.
Jon Burr: Where you require these things to be above 100 DVD you can see, for, as you would expect, for K on this almost entirely to track events which you hope you should be able to.
Jon Burr: reconstruct relatively well and for the air interactions, this is the neutrons I have kayla Okay, and in the backup about you know quarter to a third of them are produce know kind of final state charged particles so again these wouldn't count as background.
Jon Burr: Okay, so what we need to do next simulation predicts backgrounds, about two orders of magnitude higher than the data driven estimate, which is obviously something we need to study further.
Jon Burr: The majority of the background is looks like it should be the hydraulic interactions from neutrons and towns.
Jon Burr: The next step will be for GM for simulation of atlas of the new bus we're currently working on it with a focus for now on the prototype which we'll talk about shortly.
Jon Burr: So the idea, there is, we can measure possible FLEX has been Kevin during when three we can simulate what that should look like from our Monte Carlo.
Jon Burr: And we can compare the two and see if we're even anywhere close and see if we still have this factor of a couple of orders of magnitude Okay, so I have time for questions now.
Louie Dartmoor Corpe: Okay yeah Thank you very much john for another, in time, so we have plenty of time for questions and let's see, I think, yes, this at least one on hand raised from Jamie Please go ahead.
Jamie Boyd: hi john thanks for this nice talk so I had a question on your eq miss cut and, in particular.
Jamie Boyd: So what's the current value that you were talking about I missed it.
Jon Burr: Oh sorry, yes, so the cut the cut us here is 30 TV which comes from the, which is the one you sent me on spectrometer search policy various space that unit.
Jamie Boyd: yeah I mean, I think that that won't be very effective in highly amnesty elysee conditions when you have much more pile up, and this will have it depends how that at MIT is made, I think, but.
Jamie Boyd: Normally the resolution will deteriorate significantly with pilot, and so you will find a large number of events just have this from the fluctuations of jets etc, so you probably there's something more clever that you can use in high piled up environment.
Jon Burr: yeah for sure i'm this that's a good point, the resolution will be honest book probably be highly me.
Jon Burr: I will have better better as attached as well to deal with that yeah it probably won't make it make a fist entirely.
Jamie Boyd: The curves that you showed here for signal is this with pileup included and stuff.
Jon Burr: Oh no, so this is this doesn't include mismanagement so.
Jamie Boyd: I think at the low.
Jamie Boyd: yeah.
Jon Burr: and obviously that's going to smooth things out more is going to be more important to the past.
Jamie Boyd: And then another thing you didn't mention is possible sort of secondary production of neutral had runs so you know particles hitting the color emitter interacting and then producing K lungs case, maybe K shorts if they're produced in the color emitter they would be.
Jamie Boyd: They could also make it to a new business and then decay and so, so I think if you use the sort of activities about this is probably gets rid of this type of background, but it's also something that's probably worth at least two bit.
Jon Burr: yeah so that's that sort of thing will study with the fall down for model but yeah I do expect that most efficient be removed by these isolation cuts that's sort of a secondary reason for having them.
Jamie Boyd: yeah yeah no I think this isolation is very important and then maybe last thing to say, is just that it would be interesting to know the momentum sort of spectrum of the let's say the key long's which make it to on the new ones that make it to.
Jamie Boyd: To decay in the relevant place to cause a real background because there might be some difference in momentum.
Jamie Boyd: So, which then I mean this is what you said, looking at the hip patterns in the detector but in the end if it's just a simple decay, this is really coming from how boosted the particles I would think.
Jon Burr: Yes, do the well, it depends, of it, where you're setting the matt cutts and that's that of course don't to go through with all of these concerns you talking about with the resolution on that.
Jon Burr: You get it quite as well after the mat cart you gets quite a quite a strong sort of primary population, which are those that have enough matt not PT for them to be driving the entirety of that matt and then you have a secondary population where very low generally very low moments.
Jon Burr: Where the masses being driven by something else.
Jamie Boyd: But is that true even if you apply all these activities in atlas So these are really a cade on that's produced far away from any other activity.
Jon Burr: Yes, you still you still got quite a significant number getting food, you can see, actually these active vetoes least after you've done the math selection and everything else the actor features are cutting out relatively vessel.
Jamie Boyd: yeah but if the makeup was less effective than they may I mean there might be a strong correlation between these two, so it.
Jon Burr: Definitely is combination because.
Jamie Boyd: Okay, I leave it there, thanks looks interesting thanks.
Louie Dartmoor Corpe: Thank you for that.
Louie Dartmoor Corpe: Okay, we have a question from Michael next.
Michael Albrow: yeah quickly am paint very interesting so assuming you have a nice for track vertex candidate, what can you say if anything about the mass of the parent.
Jon Burr: that's tricky because we don't have momentum measurements on these tracks.
Jon Burr: There was something in the the foods.
Jon Burr: That paper think about measuring get giving you something on.
Jon Burr: think that might have been something on the mass from that that that was rather I can't remember that now off the top of my head.
Jon Burr: I think, is quite I think it's tricky to.
Jon Burr: Santa fe and have them as without an event and measurement.
Jon Burr: I see.
Oleg Brandt: Maybe I can jump in quickly is there, I think it may have been codec so what codecs want to do is they really want to I mean they also have no magnetic field as as.
Oleg Brandt: us just because the volume is quite large and electric field is expensive so it's it's time of flight information that you could use so for newbies this is.
Oleg Brandt: Of course, a bit more challenging just because the tracking station so bit further apart from each other.
Oleg Brandt: But then each tracking station consists of well let's say simplistically to tracking layers which are about one meter apart and this one meter is of course not great for time of flight, but on the other side.
Oleg Brandt: If you can fully capitalize on the intrinsic timing resolution of our PCs of the new generation, which is in the ballpark of say 200 microseconds.
Oleg Brandt: Then you can actually get a fair handle on the momentum and also affair handle on on the mass of what visible marks have offered.
Oleg Brandt: Displaced vertex um but yeah to answer your question concretely while we're building the detective at the moment and working in the background working out the background simulation so I can't really say.
Oleg Brandt: about the mass momentum sorry mass resolution for such a displaced vertex Surely we can do something, but yeah.
Oleg Brandt: More precisely, I can kind of.
Michael Albrow: help, but if you have some energy measurement as well, but I guess you don't have money or room to carry mission behind the tracker right, I mean that would be so I guess.
Oleg Brandt: That would be very massive.
Michael Albrow: yeah and.
Oleg Brandt: You can split a computer and you can use what we're discussing certainly is a sin pretty shower which would allow you to do photons.
Oleg Brandt: So then, essentially use the three rbc layers as well as a basic sampling color limiter so this you could do, but there's only so much you can you can do if you're suspending things from the ceiling.
Oleg Brandt: And he.
Louie Dartmoor Corpe: Okay, thank you, so I propose that we now move to the next talk, which is going to be doing bio like so thank you again to jump to this very nice presentation.
Louie Dartmoor Corpe: Okay, or like I can see your camera I can't see your screen yet.
Louie Dartmoor Corpe: Okay, seems to be loading.
Oleg Brandt: Okay.
Oleg Brandt: I didn't go very well.
Oleg Brandt: let's see sorry.
Oleg Brandt: second attempt.
Yes.
Louie Dartmoor Corpe: Yes, perfect.
Oleg Brandt: The first time somehow.
Oleg Brandt: The window disappeared from both desktops so even you couldn't see anyway um.
Oleg Brandt: This last talk is about.
Oleg Brandt: The prototype.
Oleg Brandt: A new bass pro anubis in short.
Oleg Brandt: or baby and we just we also call it and yeah i'll i'll tell you more about this in the next 10 minutes so yeah that's a picture of a baby and Lewis on the right hand side.
Oleg Brandt: that's actually a technical drawing that Chris has made and which is no well actually has been constructed and his way to is waiting for a second chance of paint and to be shipped to certain next week.
Oleg Brandt: um so yeah the prototype is essentially a 1.8 times one meter times one meter prototype using exactly the same technology as the final.
Oleg Brandt: detectors that's that's the main idea right and what we want to do within this prototype is to measure the fluxus of particles inside the cover in seat.
Oleg Brandt: So 2022 and run three, that is, this year we will run on surface in Essex one and next year we will run inside the cover but anyway i'll speak about this in a minute.
Oleg Brandt: And just for the context, why this is relevant and why this is important at all well, first of all it's the same detective technology so you're.
Oleg Brandt: going to write yourself and also the geometry is very similar you see that the tracking stations are about one meter apart so it's the same the same setup so you can actually measure the tracking resolution and secret cetera et cetera.
Oleg Brandt: But all so you get a handle on your backgrounds, so the main idea of this prototype is that by the end of 2023 when we analyze the data from the prototype.
Oleg Brandt: We want to be able to cross correlate these data with the details and four simulations that john is working on and essentially saying well yeah great and let's go forward with it, or maybe something else.
Oleg Brandt: OK, so the mainframe this is essentially eye candy, this is the fate of the frame.
Oleg Brandt: While it just l shaped angles, for the frame this is the frame after welding This is all builder, by the way, observing his deeds.
Oleg Brandt: And sorry that's how the frame looks like after being painted, and this is the frame with lex and, as you can observe it's tilted so the resolution of the of the rental wide is tilted and why the legs of different length you'll see in a few seconds.
Oleg Brandt: Okay, so this is just a mechanic frame like I said next week, this is expected to go to certain amount of course you also need the the actual detector is electronics of the detectives.
Oleg Brandt: Right, so this is the assembly of.
Oleg Brandt: robust and you can see here i'm toby actually testing.
Oleg Brandt: 592 strips panels.
Oleg Brandt: But she has been soldered to.
Oleg Brandt: Which.
Oleg Brandt: which have been sold this front end boards in front end chips.
Oleg Brandt: By Tolkien john predominantly.
Oleg Brandt: At CERN.
Oleg Brandt: This is the next step, which is.
Oleg Brandt: The gas CAP which is delivered commercially, and this is the test of those gaskets and i'll say a bit more about this in a second and that's the closing of ready rbc panel.
Oleg Brandt: Though that's essentially to extrapolate strip fellas why you don't want five sandwiched.
Oleg Brandt: In between them is the gasket yeah, so this is this is essentially this step here or for the very first rpc this is Luigi from university of from the second University of Rome showing us the process.
Oleg Brandt: yeah and that's the final result, this is essentially the font and board with internships each responsible for four channels and what you.
Oleg Brandt: See here are many, many ground connections and the reason for this is essentially the very high performance of these chips, so the signals that you get in this one in this new generation of our PCs with a one millimeter gasket which allows for supper timing, the signals, of course.
Oleg Brandt: So much smaller.
Oleg Brandt: Just gasket is very, very thin so you need very good amplification but extra care with.
Oleg Brandt: Producing a very good faraday cage for your strip battles.
Oleg Brandt: Okay let's move on the gasket performance is excellent, as you can see from this blog to CC are very nice linear behavior which then becomes exponential exactly as you want, want to see it.
Oleg Brandt: And Well, this is actually the next step, which is testing the strip banners after installing the front end boards, so you essentially touch this strip on your your test induction noise.
Oleg Brandt: So yeah we have 99.5% of channels be life Okay, and this is the first heartbeat of baby or nervous and that's, by the way, john having fun with.
Oleg Brandt: With the first test of rpc was already assemble rpc seamless and what you can see here are the finished cygnets tested pretty much last week, and this is the last rbc signal is singular much which is already wired up for tests this.
Oleg Brandt: In the coming weeks.
Oleg Brandt: Okay we've also looked into tracking and that's what's showing here that's a student project from penguin which i'm sharing here, so this is.
Oleg Brandt: One one example, along with particle event display from a decay, so we have here the tracking station, the tracking layers of one meter apart also one layer in the middle of a pattern recognition.
Oleg Brandt: And you have the decay into four tracks and two views one from what the say from this side, one from this side now and then you do this 10,000 times.
Oleg Brandt: Simply random sampling using Monte Carlo techniques and then what you can plot here is the actual position of your displaced vertex which you know from the truth minus the one that you free constructed, so you want to have very well delta like function, so you can see that.
Oleg Brandt: Indeed, there are differences depending on what kind of geometry you pick and this is what some.
Oleg Brandt: summarized in in another slide very briefly, of course, the studying is much more interesting and much more complex but, basically, this is the takeaway message you don't want to put this single so in such a way that the strips are on top of each other, you actually want to displace them.
Oleg Brandt: Equally distantly so that you actually do get the best resolution on the vertices and to the trucks.
Oleg Brandt: Okay now This brings me to the plans um I think I still have three minutes right.
Louie Dartmoor Corpe: Yes, you.
Louie Dartmoor Corpe: Only have about five okay.
Okay.
Oleg Brandt: Well, we should also have some time for discussion so let's let's come to speak about our plans, obviously we are finalizing the detector now, what is the next step, obviously, is the duck implementation.
Oleg Brandt: And then in well later later in the summer, this year we will be expected start date data in the sex one building, so this is just above address.
Oleg Brandt: here and there, you can see that the prototype will be prototype will be sitting exactly on this concrete lid which is put every year after the.
Oleg Brandt: Access to the cover and, on top of the little close it for creation protection.
Oleg Brandt: reasons and the nice thing about this lid is that you have free a free line of sight, all the way down to the interaction point of course.
Oleg Brandt: With the exception of atlas, which is in between, but other than that there is no, no concrete no rock so essentially.
Oleg Brandt: can get us and well also hundreds from punch through jets that reach your your detector.
Oleg Brandt: Which is fantastic, because then, of course, you have the tracks from the cost mix which you can use for very first very basic commissioning that you can do pretty much and you were so well that you can.
Oleg Brandt: Just use those cosmic tracks to measure the hit efficiency of the tracking efficiency, but then of course it's much more interesting to extrapolate.
Oleg Brandt: tracks from the p collisions back to atlas which then allows you to measure the tracking efficiency in absolute terms, that is to relate your.
Oleg Brandt: amount of purification of neurons in the in the Atlas spectrometer to the ones in mother mother prototype.
Oleg Brandt: So for that of course we would need to identify events seen by both and lupus and Brian Lewis and and outlets.
Oleg Brandt: And for that, of course, one would need to be able to timestamp the events, as recorded by throwing numbers, so the physics goal for this year for 2022 would be, first of all too well, to confirm that we can actually see nuances coming from atlas being able to correlate.
Oleg Brandt: With the Atlas results, but then also to measure the rate of secondaries from hydrants interacting with a concrete lid so as I was saying, you will have some fraction of policy mo.
Oleg Brandt: sleep is from lunch, which is which make it all the way up to the concrete late and then hit the little and then produce displaced vertex it's not the displaced vertex that's interesting from a DSM search perspective, but no to displace vertex and you can use it to.
Oleg Brandt: collaborate your detector and to see what optimize the performance of your misplaced vertex and construction algorithms.
Oleg Brandt: Okay Now this is again some ice candy sorry I can do this as X one building pretty much the location, the side of the building where we're approaching this is supposed to be located, so this will be.
Oleg Brandt: About here that's that's the plan.
Oleg Brandt: And yet, many thanks to our Medusa colleagues who put a.
Oleg Brandt: gas pipe here in the building be located it, so we are now it's only.
Oleg Brandt: Now of course makes our life much easier because we just need to pull it the last say.
Oleg Brandt: 15 minutes to this location okay 2023 that's where it becomes interesting really interesting from physics perspective, because this is where we go inside to cover.
Oleg Brandt: Essentially, two main locations per post, I will discuss only one which is the model let's see the favorite one by technical coordination from atlas but also from our perspective and also makes things easier so that's the location.
Oleg Brandt: On the left hand side on the balcony on the top floor of these countries or balconies or whatever you want to call them.
Oleg Brandt: So they are the problem is, for the first part, very similar to the one from 2022 yeah reconstruct drugs, etc, etc, we repeat quickly the conditioning steps, but then of course comes the real meat.
Oleg Brandt: And that is you want to look for hydrants from regular jets and also you want to look for hundreds, which are aligned with the missing from source momentum because that's precisely the selection that enriches your.
Oleg Brandt: Selection bunch of widgets so essentially what we want to do is you want to take this election that don't be just demonstrated and we inverted so we really go to this background, which region with punch through jets and.
Oleg Brandt: yeah you look for displaced vertices from K long's and neutrons and yeah try to confirm that are simulations were indeed correct.
Oleg Brandt: OK, the next steps, just very, very briefly.
Oleg Brandt: We will have a very, very good Tony resolution so Allah says a tiny resolution on the velocity of about two to 3%.
Oleg Brandt: Even pro and even the prototype will have a resolution of one per mil, which is, of course, much, much better so here's the riddle, this is the challenge to our theory so Essentially, we are looking for a bsm model that atlas which is sensitive to essentially beat us off say.
Oleg Brandt: Well, up to 0.98 or deviations from unity up to 0.98 and However, if you if you can construct the DSM model, which gives you some you on sort of what styles, if you will.
Oleg Brandt: Which are just very slightly slower than the speed of light so that only produce can see them, but not atlas.
Oleg Brandt: I think we would be very, very interested to hear about those ideas so if you're if this idea and drinks you please have a look at these slides which essentially post, the question that's slightly more detailed way.
Oleg Brandt: Okay, as a summary or just list the advantages of a novice in the final and movies, we expect to have up to three orders of magnitude better sensitivity.
Oleg Brandt: With respect to current or approved future experiments for neutral, long live particles produced at the electroweak scale or above with very long lifetimes.
Oleg Brandt: All this comes over the fairly moderate price tag of about 10 million Swiss francs, the order of magnitude 10 million Swiss francs.
Oleg Brandt: And the real asset of this experiment is this Jason see to atlas.
Oleg Brandt: Because the ability to trigger atlas gives us not only the possibility to reject backgrounds, I mean this is a must, without it, the new concept doesn't work.
Oleg Brandt: As the main point is, of course, in addition to that, that we can really get the full picture of the events so if you have more complex bsm signal, like, for instance susie or.
Oleg Brandt: Is that blessed helps production, where there's that boys in the syllabus and the help against against the case in collections and then this really gives you the possibility to to identify such complex models.
Oleg Brandt: Okay, and yeah that's essentially.
Oleg Brandt: Thank you, if you're interested to join the commissioning effort and data take effort, and of course the data analysis effort of the data from 2022 please do reach out and yeah i'm sure there'll be many opportunities to contribute, thank you.
Louie Dartmoor Corpe: Thank you very much you're like really very interesting talk and I see some actual pictures of things being built, which is great.
Oleg Brandt: Or you kind of.
Oleg Brandt: Imagine how happy I am those.
Oleg Brandt: Pictures the only stupid thing is that i've never seen those pictures because it's it's always like this right to ask your dad well why were you never there when Santa Claus came during Christmas.
James Beacham (he/him): Oh, because you're the one taking the picture.
Louie Dartmoor Corpe: Exactly.
Louie Dartmoor Corpe: Okay, I think we have time for one question.
Louie Dartmoor Corpe: or two if there are any.
James Beacham (he/him): We need to invest in a selfie stick for you.
Louie Dartmoor Corpe: Federico you had one.
Federico Leo Redi: yeah so if nobody is asking them, I can think the opportunity to ask a question it's very interesting to see all these efforts so just to understand.
Federico Leo Redi: Fully i'm sure he was citing the lines, but I didn't understand, so this data, taking 2022 is definitely happening, and you are building the prototype.
Federico Leo Redi: And, and this will have a timescale of this is what I didn't understand how long are you going to take data for and are you planning a second or third.
Federico Leo Redi: iteration of these.
Federico Leo Redi: Of these tests.
Oleg Brandt: yeah.
Oleg Brandt: I think i'll just go to this slide because this is helpful yeah so 2022 as soon as we get the prototype rigged up and the frame, I mean the frame will go into six one, presumably, together with the rpc presumably in late June that's that's what we are planning for.
Oleg Brandt: Mid July, then until we rigged up the deck system let's say.
Oleg Brandt: That September, which gives us three solid months for data taking until the elysee shuts down.
Oleg Brandt: yeah and then of course we want to take the detector anyway inside the cover, and so this this system starting the 2023 data taking i'm.
Oleg Brandt: artless technical coordination set 2023, of course, by the end of 2023, we will see what will find so we may be actually a reason strong motivation to actually continue into 2024 but.
Oleg Brandt: The idea is that by 2023 we should be you know everything that we know to really confirm our background estimations and yeah go forward.
Federico Leo Redi: Okay, and for 2022 do you need the EP security clearance or you have that already.
Federico Leo Redi: Because it seems like you're sure you're going to do.
It.
Oleg Brandt: Well, we discussed with atlas with the technical coordination with the management team.
Oleg Brandt: Okay, so.
Federico Leo Redi: I guess you need specific clearance from the EP I guess right as well Okay, but that we've come because you you're sure the Atlas.
Oleg Brandt: is well, we are not a sub project right, so we just got this up last.
Federico Leo Redi: Night Okay, because you are officially in our kind of Sub projects.
Oleg Brandt: Well, and I kind of present you with a paper but look, I mean we are using our PCs with the plastic tomoji and.
Even borrow sorry.
Oleg Brandt: But that will replenish to atlas or we actually replenishing plotless so yeah that's.
Federico Leo Redi: What a custom with ssd which is not, which is not a sub project or another experiments which had to go through the.
Oleg Brandt: CP 17.
Oleg Brandt: years I was wondering Oh yes, of course, of course, once it reaches this stage and also once the phone numbers is being discussed.
Oleg Brandt: it's clear, I mean what we are doing there is essentially putting a set of detectors on the surface right that doesn't.
Federico Leo Redi: yeah sure sure sure.
Federico Leo Redi: Sure, I mean for 2023 would be more more complicated Okay, thank you very much, that gives you data essentially work a deal like 2025 if you want to analyze everything that's very impressive.
Oleg Brandt: Well, we do hope that with 2023 will have all the answers we need an arrest is just a little bit of fine tuning.
Federico Leo Redi: Who knows.
Louie Dartmoor Corpe: Okay.
Louie Dartmoor Corpe: Great, thank you for this question, we have.
Louie Dartmoor Corpe: A couple of questions and then I think we have to move on, for time reasons but let's take the ones from Jamie and then Stephen.
Jamie Boyd: I like em yeah I had two small question so when when you talked about this Peter resolution so from the timing, are you taking into account the spread of time from the galaxy bunch, which is about 180 seconds I say.
Oleg Brandt: This is taking into account so basically you're benefiting from the fact that you're very far away from the production point so even then, even if you're some say 200 microseconds you still end up with a fairly decent resolution data.
Oleg Brandt: collected sub permille but you know if you're on the debates.
Oleg Brandt: About one per mil.
Jamie Boyd: Okay that's excellent and then just for the prototype thing, so I didn't completely understand the it will be triggered with that list or.
Oleg Brandt: No, no, we want a timestamp so we want to, we want to connect to the elysee clock.
Oleg Brandt: So we want to be able to say, well, this this track.
Oleg Brandt: came in at some time X and then you know you have the time of flight, you have the you assume speed of light and then you say, well, so and so many nanoseconds before.
Oleg Brandt: This originated from atlas or do we have a single neuron trigger the fire that this time within you and when traveling in the same direction.
Jamie Boyd: Okay, and it's clear that these new ones that make it to you will be pay high enough PT to be triggered in that this is that right.
Oleg Brandt: Well, the single trigger will be running right, and of course we will not see all the Moors I mean the ones which are not triggered, we will not see clearly that yeah.
Oleg Brandt: I mean there's there's enough of those even above 26.
Jamie Boyd: yeah yeah.
Oleg Brandt: For 20 years.
Jamie Boyd: I mean yeah okay thanks.
Oleg Brandt: Well, we don't need gazillions of those right, we just need to do a couple of.
Oleg Brandt: Those for conditioning.
Oleg Brandt: In the cover and there should be sufficient flux anyway, even forced type.
Louie Dartmoor Corpe: Okay, and last question from Stephen.
Steven Lowette: This was triggered by by the discussion before we finish it.
Steven Lowette: And since you mentioned come join us and I was wondering if.
Steven Lowette: If you function like that also cms Members can join or not.
Steven Lowette: We have atlas people.
Steven Lowette: In the cms project so it's a bit of a special case, but maybe to work also for me.
Oleg Brandt: well.
Oleg Brandt: Okay The short answer is, I don't know.
Oleg Brandt: The long answer is, I would hope, this would be possible, but you know until there is a precedence, I will probably not invest too much time into figuring out that this is indeed possible I would assume that should be okay.
Oleg Brandt: Provided that you know the collaboration space within this clearly defined scope, I mean I wouldn't be surprised if this is not approved.
Louie Dartmoor Corpe: Yet, so thank you again Lincoln and all of the new best teams, be very interesting discussion and and I think now we move on to a talk on the topic of facet by.
Louie Dartmoor Corpe: So, are you.
connected.
Ilknur Hos: yeah.
Louie Dartmoor Corpe: Okay, great so please go ahead and share your your screen with your slides.
Oleg Brandt: Yes.
Toby Satterthwaite: Oh, like you're unmuted.
Federico Leo Redi: I muted him.
Louie Dartmoor Corpe: Okay, great.
Louie Dartmoor Corpe: We can see your slides so you can get going, whenever you're ready.
Ilknur Hos: Okay.
Ilknur Hos: Today I would like to give a presentation about.
Ilknur Hos: The face of project, on behalf of our Facebook group.
Right.
Ilknur Hos: last piece is credited at minimum before perfect storm of standard models and particularly allowed piece are often present, in fact, for that matter, model.
Ilknur Hos: That they start as total between vm and the fantastical like such as hospitals, having a trial lessons as soon as possible colors or darkly particles, I will share after the live video showing the studies that we have actually.
Ilknur Hos: searches being going at LSE, but there is still a possibility that neil's relatively light particles schools escaped from the direction of our which I mean less than 25 TV so Facebook project can search for bachelor parties.
Ilknur Hos: With the illuminati with the direct path from it to the directors and a coverage or financial proper lifetime from all points one to 100 meters.
Ilknur Hos: The main aim of the project is not the main but one of the aim of the project is to have a precisely construction of creative artistic endeavor to eliminate the background to have zero background actually.
Ilknur Hos: In committed his life, I will try to give a brief summary of the biceps layout design Actually, this is a nice subsystem of a cms experiment it's not an experiment is will cover the age of 6.22 7.6 as you see here, it has.
Ilknur Hos: 18 meters long decay volume from that equal to or 100 or 219 meter and there is also another eight meter here on the right, which contains virus particle detector step idle mentioned in come to life.
Ilknur Hos: On the left, you see that there is additional shielding just in front of the House, because the first director, which is made of radiation has.
Ilknur Hos: Class blocks and on the both side of the analyst bean pies, which is our last 250 centimeters that blue line showing you the other medium hemispherical CAP, they will have us to minimize the multiple skeptic of the trash particles and register in advance mismatch.
Ilknur Hos: On the right, I said that there is a meter region containing the other directors as well, one is silicon tracking so Dr Davis has us to measure the chart charged particle track, followed by the electromagnetic and partnering color meter yeah.
Ilknur Hos: The project has IRA, which will have a magnetic field, or one point 75 Islam.
Ilknur Hos: Islam is set with additional silicon tracking it is going to be used to measure the charge of meals and allow them to approximate measurement of the me on my mantle and time your muscles and in your pay.
Ilknur Hos: There is also a layer of test finding that login the vectors will be included.
Ilknur Hos: This high resolution timing like typical seconds they provide for exposure positioning in four dimensions and the time flies mission was charged particles.
Ilknur Hos: There are color muted, as I said, the electromagnetic Dan has one color meter they will be identical to the technology of the cms he collection.
Ilknur Hos: With the face of project.
Ilknur Hos: Well, for the favorite project, the raging allotted parameter space has been studied for star football having a trial left off after light particles tan tock tick tock in several benchmark denied.
Ilknur Hos: Actually, in this study the predictions generally our model dependent and samples will depend on the nature of the beast on that model.
Ilknur Hos: The studies that I will show you are based on the integrated to the Minister of tree in work as a band of PC coalition at 14 TV.
Ilknur Hos: With either three or five candidates.
Ilknur Hos: Here is the first study for the size of three.
Ilknur Hos: Massive stock photos are natural dodge also can interact with a sand particles.
Ilknur Hos: immersive visual, for example, this by any process in hotter and hotter and coalition has found probability of conversion of the conversion to add.
Ilknur Hos: That photo so if the mass of the proton is less than one GD the most dominant forces will be the case of the size zero eternity primary forms, and for that scenario, you see, there is a figure on the right show me the face of trajan with the blue dashed line.
Ilknur Hos: you'll see that it is wider than this, because the face of.
Ilknur Hos: The other scenario that the mass of a prime could be greater than one TV than the main production mechanisms are going to be Brian for unsolvable quark antiquity, and have requested so here, you see the comparison of faces to the other experiments.
Ilknur Hos: For the photon reach in a specific model model bit heavier that Brian the right speaker show me the number of events is a function of lifetime for the math of a crime dark purple 424 and tangy the corresponding to the.
Ilknur Hos: This parameter actually corresponds to the last column on the left, you see that the last line shows the size of three.
Ilknur Hos: The second study is having a telephone many expressions of the standard model in will have it right kind of nuttiness or having a child, let.
Ilknur Hos: me explain the lightness readiness master to the public and business ascetic expression of funding model is concerts here just to.
Ilknur Hos: Have it neutral Nepal and in that figure, you see that, on the right, the pace of change for the having a trial lesson is compared to the other experiments the purple line that is preventing defects and.
Ilknur Hos: Above the 15 gap between the old point one and 100 meter last time we see that Facebook has a unique sensitivity here.
Ilknur Hos: study is accelerate particles.
Ilknur Hos: That could be more massive action light particles and if they are produced at LSE they meditate with long lifetime into open case or electron paste after penetrating sick of those.
Ilknur Hos: Yes, I like so much electro electro magnetic parts of at call has high good analytics and visuals the direction of photo shelter spot vertex and.
Ilknur Hos: Okay, much worse than for chest X here faces will be evangelists to discover, such as.
Ilknur Hos: You see, that the.
Ilknur Hos: Red one representing the face of outreach.
Ilknur Hos: The last study is about storage the darkness falls on the little faster four articles on became to the lexical final state came on in the building.
Ilknur Hos: The last one is show me to be met on the case, why the right one, is for history here on the right, you see that Facebook offers a unique sensitivity for the darks expose on mess after the kinematic little less of a hassle to match.
Ilknur Hos: The purple pink one is showing you the pace.
Ilknur Hos: As a if it comes to the background issue summarize, yes, my short.
Ilknur Hos: background is coming from the details of nitrous Hassan instead of extremism, but the case of the left one sense to have a higher message should have vanishing background.
Ilknur Hos: Thanks to the iron October a vacuum decay volume high precision tracking high granularity color meter and real momentum mission of in the Torah the Torah is out spectrometer.
Ilknur Hos: So if I concluded talk face of his proposed as a nice subsystem for cms.
Ilknur Hos: It has 30 to 50 meters magnetic shield think we try this almost all touched on that note of extra a tether hotspot and multi layer radiation high inflation cancer protect charged particles that will reject and in the trigger it has a beach vacuum packed with LSD quality.
Ilknur Hos: Which is 18 meters long and one meter diameter part.
Ilknur Hos: SMS upgrades quality tracking including climate information, a high granularity color Mr color imagery for electromagnetic and Hello hello, Mr and method put my bed discourage me or six millimeter with different tracking.
Ilknur Hos: The main part of the project is to search for beyond the standard model Ltd came in last question wasn't, of course, corresponding to integrate a list of.
Ilknur Hos: About three inverse astro van of people at working to basically make an English search for that football having a child left falls upon like factors and articles on.
Ilknur Hos: The first can be background story in multichannel, especially for natural as possible and basically like floor a unique idea in the parameters of mass and coffee slashes automatically to the other existing reports.
Ilknur Hos: So here is the list of people in our Facebook group and our paper is already accepted for publication in Journal of high energy physics.
Ilknur Hos: So the last two lights, lastly, yes, there are studies that including Facebook so essentially something i'm allergic to this workspace of physics teacher in your competition.
Ilknur Hos: The letter of intent to cms is under the development to be blessed by some for the studies for the sales director layout as well as physics simulations ongoing the intestines member of cms or are welcome to join.
Ilknur Hos: The meeting on Wednesday.
Ilknur Hos: Thank you.
Louie Dartmoor Corpe: Okay, thank you very much for this really nice talk, we have time for a couple of questions before so let's start with Daniel.
Daniele Barducci: Hello hi can you hear me.
Ilknur Hos: yeah.
Daniele Barducci: Okay, thanks for the question about those later level.
Daniele Barducci: Where you stood the model with some long believed the neutral left.
Daniele Barducci: So what's the decay channel of this rather neutrino Is it the standard decay in Eric by the mixing with the activity or three know something different.
Michael Albrow: Did you want me to comment on that I can answer.
If.
Federico Leo Redi: you're muted.
Ilknur Hos: muted sorry sorry yes.
Ilknur Hos: Sorry, I couldn't hear the question that I love.
Daniele Barducci: Okay, so.
Ilknur Hos: You are, as a person, I guess, sorry.
Michael Albrow: Sorry i'm just coming on that, I mean that there may be three neutral let you have a lap dance, which would indicate normally to a an e or a movie or a towel, depending on their flavor plus a virtual w which would decay to to add ron's so.
Michael Albrow: They can be all three and.
Daniele Barducci: OK OK, so the standard decay coming from the mixing there Okay, no, I thought, in other words, some additional decay.
Daniele Barducci: Beyond the one in everything by the mixing Okay, thank you.
Louie Dartmoor Corpe: hey, then we have time for last question from Jamie Jamie.
Jamie Boyd: hi thanks for the Nice Okay, I have to say, this is a very interesting project, and I mean for me the the background sound very challenging in this area.
Jamie Boyd: But what I was wondering about is if you've just thought at all about where let's say off detector infrastructure would be so things like power supplies of the tech to electronics, etc.
Jamie Boyd: Because I think there will be a huge amount of radiation in place to where you want to place the detectors and I think this could be problematic, so I don't know if this is something that's been thought about.
Michael Albrow: yeah I can comment on that as well, yes, of course, there's infrastructure that power supplies cooling and so on and so forth, that has to be in the tunnel and as you're right it's a it's a high radiation area so that that's.
Michael Albrow: we're working on that.
Michael Albrow: Where they're actually people to see where the sun can be located and we're doing lots of fluker studies fluker is the standard for radiation studies in the actually and every bunch crossing will have quite a quite a few charged particles coming here but.
Michael Albrow: Where we.
Michael Albrow: away from the beam line and nearest detectors the beam line or 18 centimeters in radius so there.
Michael Albrow: Are the backgrounds coming from being pipe interactions and song.
Michael Albrow: So there's these questions about infrastructure location and things started now.
Jamie Boyd: Right just yeah because I mean for the FDA for when we projects i'm looking at, we were thinking to place a magnet in the elites eternal.
Jamie Boyd: In New York actually which has got significantly less radiation than where you are and we were basically told it's impossible to place power converters in this region because of the radiation for healing modality so yeah I think it will be.
Jamie Boyd: Possibly challenging to find the location.
Michael Albrow: Yes, question is an issue and the radiation levels and our color imagery in here are very similar to the radiation levels in the forward region with the hd camera upgrade is because okay that it's within a factor of two or three of of that location, but.
Jamie Boyd: yeah so I, I understand that you're using you know really cutting edge detected technology that's trying to be as radiation hard as possible, so.
Jamie Boyd: that's probably OK, but what i'm thinking about you know power supplies and stuff, so it is a do you know how much sort of physical space, you need for this type of infrastructure.
Michael Albrow: I say that's that's coming that's coming up in the in the document we're preparing for the electricity and will be a further study in the technical design report if cms approves to go ahead with the technical design report yeah.
Jamie Boyd: OK cool it sounds interesting, I think.
Louie Dartmoor Corpe: We could Thank you again for this very nice.
Louie Dartmoor Corpe: presentation, I think all the speakers in the session apologies, we were running a little bit late, I will take a five minute break I think before coming back at 1525 certain time for the rest of the session