WH13NW- Oscillatorium: Thank you say got it nice you got it.
WH13NW- Oscillatorium: Thank you.
WH13NW- Oscillatorium: Sorry i'm ready.
WH13NW- Oscillatorium: Okay, so we have physics, for now we're going to be talking right you're gonna be talking about.
WH13NW- Oscillatorium: facets.
WH13NW- Oscillatorium: Just a quick bio.
WH13NW- Oscillatorium: he's been part of cms since 2006 he's been married since 2007 he got his PhD at Manchester University in 1969 because he.
WH13NW- Oscillatorium: Was.
WH13NW- Oscillatorium: Apparently.
WH13NW- Oscillatorium: He was a professor at Stockholm University in 1989 and joined formula and CDs and 1991 a very eclectic and very exciting.
WH13NW- Oscillatorium: past and future and so well, thank you very much for forgiving us the this top and yeah okay well, thank you very much, thanks we'll just talk about it, so this is the fastest project that we can work actually on for a couple of years and it's a sense of forward aperture of cms extension.
WH13NW- Oscillatorium: And it's about 30 others working having meetings every other week about this and preparing a different tend to cms.
WH13NW- Oscillatorium: To do this in run for the hydrogen os Sierra 2028 and and beyond the end of the sheet your primary motivation is to search for be on standby longer particles and pee pee at 14 TV luminosity part of in the forward direction angles angles of one kilometer radius and.
WH13NW- Oscillatorium: As you may know, most particles produce actually do going forward direction, especially in the low mass ones.
WH13NW- Oscillatorium: These can penetrate between 35 to 50 meters of iron, which are already there it's the superconducting quarter Poles and diapers and here actually.
WH13NW- Oscillatorium: And then became 14 kilometers of vacuum pack that's the large actually been pipe so as he quality vacuum this unique among older she searches in the case of the vacuum, when you have no background from interactions or partials on nuclear.
WH13NW- Oscillatorium: And you can search depending on the type of particle up to about 25 TV when, for example, i'll show you about the dark higgs or a light higgs that can be.
WH13NW- Oscillatorium: That sort of mess up bb bb CC viral ciao ciao lifetimes along see tower that's on boosted see tower point one to 10 meters because boosted the travel hundred meters or more fulfillment i've seen talk about hundred 50 people a bunch of crossing.
WH13NW- Oscillatorium: Rather, for is only about plan to be one inverse act upon, but the total we're talking about three inverse advice, before the end.
WH13NW- Oscillatorium: In addition to that there's some standard model of physics that can be done with this, they are, for example, little mass high momentum.
WH13NW- Oscillatorium: pairs of the pairs or new pairs from Australia, with high five minutes, which is the number two I mentioned divided by the beam momentum.
WH13NW- Oscillatorium: I can come through the told in a dipole do you want an event by X, to the left and right sides, depending on the charge and and we have some exceptions for that.
WH13NW- Oscillatorium: We have acceptance for charm D zero going to K pie, but it's gonna be very hard to do because you can't use a disgrace vertex since traveling centrally longer being five, even though geezers to Kate.
WH13NW- Oscillatorium: After 10 or 20 centimeters we don't show that we can do this, but till we have acceptance for it, it is unexplored face face region, and if we can get low part of pee pee and I am run so PA rounds so.
WH13NW- Oscillatorium: This is working next slide.
WH13NW- Oscillatorium: Okay, so this is a la as planned for run for.
WH13NW- Oscillatorium: Where cms central is off to the left we're now at three and a half meters from the interaction point where that's the D one dipole it's a new superconducting dipole.
WH13NW- Oscillatorium: And and ben's been charged on the left and right now we cut, we want to enlarge it, this is a long straight the impact there's normally nothing there.
WH13NW- Oscillatorium: Up to the tech sandwiches absorber in shielding superconducting he Magnus let's start here.
WH13NW- Oscillatorium: So we wanted to put a big beam pipe in this region to get particles have come through the eye of the upstream quarter Poles and tackle, but we are limited because of the structure here which they say they can't move it move it so we're limited actually proposing to put this pipe from.
WH13NW- Oscillatorium: meters that's 80 meters long finishing some eight nine meters before this point so that we have detectors of the back i'll show you that this is just a.
WH13NW- Oscillatorium: story showing the entrance to this region from from upstairs here's a good one title here's the text, so this is a real estate in Russia, you want to use and so i'll talk more about the details of design here, but what point is a fight so.
WH13NW- Oscillatorium: long and particle.
WH13NW- Oscillatorium: If it's produced between one and 4 million radians in angle comes through the iron of the superconducting quarter posing cycles and then some additional shielding.
WH13NW- Oscillatorium: And it managed to do that and the standard model only neutrinos can do that for course they don't okay so nothing in the standard mode can do can come in here and then decay in this volume.
WH13NW- Oscillatorium: At the end and beginning, we would have thin windows, which would be hemispherical thin aluminum probably windows.
WH13NW- Oscillatorium: and
WH13NW- Oscillatorium: To be designed and that's what the issue but get these things design and the pipe is a meter diameter.
WH13NW- Oscillatorium: And 18 meters long we may have to shorten this a bit because of the obstructions but 60 to 80 minutes long, then we have this thing window.
WH13NW- Oscillatorium: As soon as possible to minimize multiple scattering of charge tracks coming but UK in the in the volume here and then all around and fledgling here.
WH13NW- Oscillatorium: The beanpot goes back down to a smaller radius two and a half centimeters that's a standard anyway.
WH13NW- Oscillatorium: And then we started at 10 centimeters with all around silicon tracking the timing as available from the tracking color material, which will be based on hd cam modules.
WH13NW- Oscillatorium: behind that some small silicon tracking perhaps to do by the system that is sitting in the House attract modules and a tornado magnet, which is a cylinder.
WH13NW- Oscillatorium: Two meters long and unlimited director here and there, most of the contract in the back, so this field goes around around the beam pipe there's no field on the beans so that's okay.
WH13NW- Oscillatorium: And this measures, the momentum of new onset can get through through the color Meta in front of this shielding, which is a no go region for us so.
WH13NW- Oscillatorium: All is all these detectors should be based on to clunes of the upgrade detectors but then REPS edge about 5% of the area of the forward upgrade detectors plan.
WH13NW- Oscillatorium: And so, this is an rp example showing penetrating into came to any any beer be uncertain or particles exceptional neutrinos.
WH13NW- Oscillatorium: Back then, so that bill sentiment of it, you probably know this, but then we know there must be new physics, at least dogmatic particles.
WH13NW- Oscillatorium: And maybe other particles called portals that couple weekly to the standard model particles and to ducks and didn't matter particle the dark side particles.
WH13NW- Oscillatorium: But we're looking for anything that can penetrate so low interaction cross section and then decatur standby articles, so all the searches move all the surgeries done so far, the he.
WH13NW- Oscillatorium: High PT going for shortest distances highest message we haven't found yet new particles hopefully we will, but maybe they're actually like, for example, lesson 20 phoebe.
WH13NW- Oscillatorium: But there's some weekly interacting longer particles or weekly, in fact, the particles that they have not been detected yet so far.
WH13NW- Oscillatorium: And most light particles have low PT and not hype et and large momentum in that direction they go on the beam pipes now i've shown the next slide just to show.
WH13NW- Oscillatorium: The http 2020 summaries of lonely particle searches the cms show that most of that searches are for mass regions of the high mass region above that say 20 GB and fairly short lifetimes that covered by cms and have a central detectors.
WH13NW- Oscillatorium: i'm a complimentary to that we cover letter masses and longer lifetimes by going 100 meters downstream.
WH13NW- Oscillatorium: Any part was able to penetrate that much iron and then decatur standard model particles in this vacuum volume.
WH13NW- Oscillatorium: So they could be portal so dark matter part of well, it could be not they they could just be not related to that matter but we're doing an inclusive search all sites that have been.
WH13NW- Oscillatorium: That can do that now there's a competition called faiza similar goals but main differences and our show we are much better than phase two different experiment is independent downstream atlas.
WH13NW- Oscillatorium: Massive closer bigger larger angles and then i'll also mention PICs target experiments that have similar goals, but they have much lower central mass energy so they're mostly sensitive to things that come from 08 indicates that say the masses of lower than about achieving.
WH13NW- Oscillatorium: Whereas we are focusing more on the higher mass region.
WH13NW- Oscillatorium: Where the lsc if some of them so here's just an overview, you have to look at all this, but i'm just showing the all the cms longer particle searches, most of them have.
WH13NW- Oscillatorium: See tower, which is the and boosted lifetime, less than a decibel meter which is here, but as we cover longer lifetimes and here's a 2d clock showing.
WH13NW- Oscillatorium: The mass a mediator particle the 20th eds here, and where there were this searches and so we're looking for low mass particle basically so we cover complimentary legion to the central detectors and maybe that's where these new particles are actually hiding.
WH13NW- Oscillatorium: So.
WH13NW- Oscillatorium: There are many theoretical possibilities for these portals or not doesn't matter because they decay, but they can connect that matter and standard light particles, of course, our exclusion limits from many things like the exact with.
WH13NW- Oscillatorium: Some of the key channels and so there's still about at least 5% missing hicks channels, we don't know the higgs could decay, up to a 5% or so to these two these two ladies skaters.
WH13NW- Oscillatorium: And maybe more than one of these classes exists at all of these types, which had been discussed enough in the relationship we can look for any of them depending only on the mass for about 100 led up to 25 triggers so that then it is by the food production cross section, the lifetime.
WH13NW- Oscillatorium: So they've got to booster how it had 100 meters and indicate before and and 20 or so and that interaction length.
WH13NW- Oscillatorium: So further times you've heard of these probably they've got the quantum number of the photons but a nonzero mass and very small company excellent.
WH13NW- Oscillatorium: So, such a thing would decay, like a virtual phone does so it's like an emergency, you might have failed states that energy but boosted in the forward direction by hundred GB or whatever it would have.
WH13NW- Oscillatorium: Another classes act accion like particle you know axioms have been proposed a very light ones to suppress strong CP violation.
WH13NW- Oscillatorium: But it's possible that there are heavier ones that we have not detected yet maybe a gv region that became mostly to gamma gamma or sometimes to eat classy minus gamma.
WH13NW- Oscillatorium: That would help because the plus it might as well give us tracks, we can see protons in the character of course as well, but not as precisely as tracks josh tracks.
WH13NW- Oscillatorium: show more about all of these but heather neutral leptons so they're like right had a neutrino and theoretically they could explain somehow the nutrient masses and mixing that could be three flavors of them.
WH13NW- Oscillatorium: The lightest one could be a stable dark matter particle is like now, and others, this is the Munich type so that would dictate to a new on by.
WH13NW- Oscillatorium: charge current and then to a pair of course which go to hydrants or new new our new plus that's a virtual w go into new you might as new so on so forth, so.
WH13NW- Oscillatorium: This would be extremely important, all of these extremely important, but this would really open up the neutrino understanding the neutrino sector.
WH13NW- Oscillatorium: And then the hates it can be another higgs a light partner which mixes with the one we know and credit five Jeff.
WH13NW- Oscillatorium: Or the hundred 25 job could higgs decay could decay to a pair of these and such a thing would coupled a mass so be decades if they're lighter than than the be.
WH13NW- Oscillatorium: They come in rare be the case if they're heavier than the, be they get they can be requirements on, so we have sensitive to all of these all of these particles.
WH13NW- Oscillatorium: So one word about competition because people's all phases phase of doing this well phases that they painted the idea of going to small to various more angles that they're at zero degrees.
WH13NW- Oscillatorium: 480 meters downstream behind a lot of rock camp downstream of atlas but here's a sketch, or they attempt to that approved for running and run in the next run.
WH13NW- Oscillatorium: But they have a decaying volume it's not back to rated it's it's just air.
WH13NW- Oscillatorium: Or could be helium, I suppose, but they're looking they have a magnet permanent magnets and then the pairs of tracks, coming from a decay particle.
WH13NW- Oscillatorium: But the vertex incremental vertex resolution and said is very, very cool you don't really know that it's in that come from that volume, it could be meters upstream.
WH13NW- Oscillatorium: They say, well, we quit simulation counter veto in front to veto charged particles coming in, but that is not going to kill template bit type of concert, so I think.
WH13NW- Oscillatorium: That they don't have a very high chance of discovering the star particle team run three but they're proposing an upgrade for them for and they they got this idea started, so I can credit for that.
WH13NW- Oscillatorium: They had thought about doing it, the 120 meters but decided that that the background was too high, but they didn't use like we are using.
WH13NW- Oscillatorium: The magnetic I am of shielding i'm going above and below the beings away from the beam they will actually mentioned that for physics facility proposal, which is a big new Kevin a huge new hall if you're like far downstream and it's a major project.
WH13NW- Oscillatorium: it's going to cost 10s of millions, no doubt, so i'm not sure Actually, I think that our project phase is better than this one for for longer articles, because we are with with some actors, we have much bigger certain language I can show you.
WH13NW- Oscillatorium: So.
WH13NW- Oscillatorium: here's a paper that we it's going to be publishing J have.
WH13NW- Oscillatorium: accepted it, but they were just doing some final adjustments to it and it's to it, these a list of the people you'll see Jim and geoff named on it, they have.
WH13NW- Oscillatorium: collaborated with us at some level.
WH13NW- Oscillatorium: ramp up more as we get approved I hope.
WH13NW- Oscillatorium: Greg landsberg this command his Professor brown as a key key person in this and sweaters come at the sample of the book printed from this temple.
WH13NW- Oscillatorium: And we have others as well, we have bi weekly meetings bed at 12 times 12 o'clock and there are plenty of opportunities and simulations and upgrade.
WH13NW- Oscillatorium: for getting in on the ground floor of this what we hope to discovery, so now bit more details about the effort agents, so this is showing for run for.
WH13NW- Oscillatorium: 20 the the arrangement of the quadruple magnets on the dipole magnet and the particles are small angles would come through them, I am here.
WH13NW- Oscillatorium: And then, this is just a pipe here, I took this picture some years ago, just to show the pipe with clattering around it, we put some counties around being pipe here to do repetitive stuff and we're part of interaction so familiar with the area and and then, so this is.
WH13NW- Oscillatorium: Proposing to replaces with a larger pipe meter diameter it's the only change required at the end he.
WH13NW- Oscillatorium: Alice has a similar big pipe it's not the same it doesn't have the same thing window at the back, that we want and it's slightly smaller but.
WH13NW- Oscillatorium: They actually say it provisioning provisioning Okay, but they say we haven't got any we're not doing a detailed study of this and that's permit and so until cms requests that officially.
WH13NW- Oscillatorium: i'm hoping feminine could actually do help design this they've got the expertise of questions when we get time from engineers.
WH13NW- Oscillatorium: No special running conditionally required he just say a cross section of diet porous it's mostly mostly I am so.
WH13NW- Oscillatorium: And then I just put this picture in because this is the default pipe that the plan, the plan to have without us being there and start small here and D one, and then it gets bigger and hit the two beings, so this is a top few one being coming in the other been going out.
WH13NW- Oscillatorium: But.
WH13NW- Oscillatorium: So here we're limited by he infrastructure, and here we have a detective so that's what we're proposing to change that to.
WH13NW- Oscillatorium: bit more about the detectives i've shown this before back to him, this is all around asthma, so what we it's important to recognize that the part of coming in, are not charged particles coming in.
WH13NW- Oscillatorium: And they're going to be plenty coming in from the shielding I mean just soft shower remnants and so on, so we went to how to scope in front here.
WH13NW- Oscillatorium: Probably courts blocks, like a cubic inch or Square and courts blocks to tag incoming charged particles scary radiation hard and granular enough and we.
WH13NW- Oscillatorium: Any incoming charged particles have seen in the tracker we track it back and we just ignore it, of course, a tracker he has got like 30 micron resolution, so the fact that very well.
WH13NW- Oscillatorium: And if we see at the track coming from from in here you ignore that so you're a neutral coming in, and to my child particles coming out of the back.
WH13NW- Oscillatorium: into the tracking color amateur would be the clone of the cms he can modules REP says about 5% of them and.
WH13NW- Oscillatorium: we're wanted to so Dieter layout and cables and so on to do that, to see how they they can be put, and maybe we can use some modules that are not as perfect as as what's acceptable, so we have a few more dead channels to me anyway.
WH13NW- Oscillatorium: And then behind we have this tool right which is basically got two slots in it for tracking.
WH13NW- Oscillatorium: Millions as they go through, and the field is around the beans and has been pre designed by people in accelerated division technical.
WH13NW- Oscillatorium: So we have a pre design of that but, on the floor design and then so beyond coming out of backup band and get traction we get that that are mentioned so here's just a list we can search for any Heidi penetrating part of what the case to gamma pairs.
WH13NW- Oscillatorium: Those tracks, so the vertex thing is not as good, but we do have shower pointing and the impart.
WH13NW- Oscillatorium: Obviously he pairs it's a massive enough.
WH13NW- Oscillatorium: EMU, now we get to me new from tau tau.
WH13NW- Oscillatorium: So the.
WH13NW- Oscillatorium: New pairs taupe as sharp as bb bb pairs.
WH13NW- Oscillatorium: Those events would look like an e plus the amount of charm factory read boosted to to hundreds of GDP.
WH13NW- Oscillatorium: And then about hundred pairs I added this because we're not focusing there because we're going to have background from K zero and Lambda that come from the back of the absorber and showers and of course we can reconstruct them, to the extent that we can.
WH13NW- Oscillatorium: From the perimeter of the tracking but about 700 me the or so we should have a little background from these things, but it needs support study.
WH13NW- Oscillatorium: By the way, the K 02 case to new pairs like 10 to the minus nine or so and we'll have enough that will actually be able to see that should see things like cater to new pairs you can barely read the case.
WH13NW- Oscillatorium: All of those things so now there's some plots that have been.
WH13NW- Oscillatorium: Calculated with a program called for see by Greg and for is your back to hit his about dark photons so basically any process that produced a photon can produce without photons.
WH13NW- Oscillatorium: If it depending on the coupling or kinetic mixing parameter here quarter epsilon and this about the mass the dark for time, you see, most of these like this is a phase, or two assuming no background phase two that's the red line, this is our coverage.
WH13NW- Oscillatorium: And it goes above a chibi because we have some coming from annihilation of court pairs or kellyanne to come back to that third time.
WH13NW- Oscillatorium: And then brent's driving, of course, or the program's themselves, and so, and the Gray areas up here are excluded by existing experiments.
WH13NW- Oscillatorium: And these other areas are actually be could do so now what you see here any 62 is is fixed target experiment that has a big vacuum tank.
WH13NW- Oscillatorium: And if there's been a few months of running in this mode, which is not their prime physics or parentheses is key to a rare case to case, so they could be they could be competitive there.
WH13NW- Oscillatorium: One just a side comment is there's limits, both for phase and for facet we're only done taking the particle the pi zero is from an interest from the primary condition.
WH13NW- Oscillatorium: But, as you can imagine, when you have all the hydrants hitting the absorbers and making showers with pi zero ages in the showers.
WH13NW- Oscillatorium: Then there's also additional sources of dark photons if the message so gv that's like a beam dumps or so there's a conservative.
WH13NW- Oscillatorium: Limits there, and this is being calculated actually has wrestlers asked, he said he might be able to calculate these in the showers and then.
WH13NW- Oscillatorium: Even though it's fixed target stuff when these particles hitting the absorbers load S, but he still has some charmin future in town a case from there, it needs to be looked at and calculate.
WH13NW- Oscillatorium: So.
WH13NW- Oscillatorium: This particular class of lone nut particles, you can have some involving very massive states like a Z prime.
WH13NW- Oscillatorium: Of course that's only at the sheet we've had only life states in production were low PT forward his favorite and then the coverage is more delta why Dr five accounts, rather than delta Omega other side angle, but here's an example was calculated by these people.
WH13NW- Oscillatorium: For the dark photon was produced with the heaviest said prime did as soon as I said, Prime the master 700 PV the parent is not ruled out yet.
WH13NW- Oscillatorium: The decades to hidden firm aeons side which could be dark matter particles and they could couple to this dark photon in this particular model, which is a very specific model with a lot of new physics, in it, they calculate the number of events, we could see.
WH13NW- Oscillatorium: Five events in inside this region 15 and scientists return up to about 20 GB these photons and what those doctors would do is decay, just like a plus or minus so up to the new pair threshold is key, plus C minus and mucus come in and join the sense, he pairs and other topics come in.
WH13NW- Oscillatorium: The above the top Ms so for 10 GB photon you have a pears pears pears, or the level of like.
WH13NW- Oscillatorium: 13% or Sir, and the rest of multi address So these are multi hydrogen case, these are very spectacular signatures.
WH13NW- Oscillatorium: But typically no background and here's a here's another.
WH13NW- Oscillatorium: Another model where these people have a Okay, they put it in parameter this duck this side, which is this dogmatic particular 15 GB particular epsilon chosen, and here the coverage of facet and function of mass is one tree the is 10 GB.
WH13NW- Oscillatorium: and his coupling So you see the extension way more than phases phase or phase two which have assume no background, which is very questionable and then here's the MTV the MIC timing detective, which is part of cms that has timing and it's going to be looking for massive dark photons.
WH13NW- Oscillatorium: So this is going to happen, but questions that background, from interactions of neutrons and so on, I haven't really.
WH13NW- Oscillatorium: got into that and then there's Methuselah, which is a proposal for a huge detect on the surface above cms or atlas which is.
WH13NW- Oscillatorium: going to be 10s of millions, I think, whether that happens, or not, but they do happen coverage because have a very big sort of angle, so if you take a vertical slice here for particular mass like 15 GB.
WH13NW- Oscillatorium: Then, this is a number of events we get in three and breast cancer bonds as a function of the lifetime see lifetime here is one meter 10 meters 200 meters.
WH13NW- Oscillatorium: At 10 centimeters and see we'd get more than five events which will be clear discovery, with no background over this region of lifetime for to Chapter four chapter 10 jet dark photons again this particular model, but you may say, well okay.
WH13NW- Oscillatorium: And then, what does this look like will is.
WH13NW- Oscillatorium: When it goes to ciao ciao you'd have to the case probably not resolvable but one email and a hydrogen neutrinos or the other 123 hydrants and so on, so these are.
WH13NW- Oscillatorium: You can imagine what these events would look like inside the inside of the text and here's an old clock from one of our publications looking for digestion displace digests and.
WH13NW- Oscillatorium: This shows i've been at see tower 110 100 meters with running out of steam, and we would extend that coverage up to 100 meters or so.
WH13NW- Oscillatorium: we're talking about anything nothing in something out vertex directionality and timing, to check or backgrounds, and this is okay, I should have done this before this, this is a dark photon sorry, this is a long lived.
WH13NW- Oscillatorium: is having neutral laptop missing the top here.
WH13NW- Oscillatorium: And these heavy neutral left or right handed leptons that could could have massive up to, we can we can cover this region up to about 25 GB.
WH13NW- Oscillatorium: And these two things decay, they could be three flavors of them, not necessarily but that's a pocket of model, the latest one could be stay with that matter particles.
WH13NW- Oscillatorium: And the others can be K to an electron or view on plus a virtual who said that decatur had translate that so are these other experiments these Codex be Methuselah favor to none of them are approved, either we yet and actually be is approved, but this is assuming that they have a.
WH13NW- Oscillatorium: This is that that will they kept is their coverage also don't have to keep volume in vacuum, but.
WH13NW- Oscillatorium: In these regions where you have over that facet would have a lot more more.
WH13NW- Oscillatorium: And this is, I think the really most exciting when, in a way, because it could be, not a higgs particle.
WH13NW- Oscillatorium: That is lighter than the eggs itself and the higgs one to five could dictate to have these scholars.
WH13NW- Oscillatorium: slide on the Court, the Court can indicate to it if it's heavier it could actually we could have sensitivity to it or there's whole mass region up to half the higgs mass is about 60 gv.
WH13NW- Oscillatorium: it's a coupling is in this region and no other experiments do this this calculation is assuming.
WH13NW- Oscillatorium: By Greg and Boris using this for seat program assuming that the higgs decay, is to these to scale is the two and a half percent branching fraction.
WH13NW- Oscillatorium: Which is certainly allowed in five percents allowed, which would widen this band as well, so I mean imagine that there is actually another hit with a massive 10 or 15 or 20 gv.
WH13NW- Oscillatorium: And because companies in the region, we could see it no other experiment pose could could see it because we don't have backgrounds, that we don't have now that was.
WH13NW- Oscillatorium: That was assuming that the actual higgs one to five domesticated to have these scales, but if it doesn't say it doesn't.
WH13NW- Oscillatorium: Then the source of these think maybe read be the case, in which case has been lived in the be so this is a coverage for dark higgs.
WH13NW- Oscillatorium: Without the 2125 genetics to came to it and we got to ask them about to be Cork massive be indicated this thing so it's a facet coverage.
WH13NW- Oscillatorium: Of phase two is his bit less, and the reason is because we have four times a solid angle and we close three and we have a longer a longer to keep it as well, so we have a much better than than the base to.
WH13NW- Oscillatorium: Now gamma gamma the case from axioms hard because we we don't have a tracking to make really good verdict saying, but here's a picture from the.
WH13NW- Oscillatorium: From the technical design report showing a couple of of at gv parallel gamma Ray is separated by three centimeters and you see the separate showers here.
WH13NW- Oscillatorium: And you can try and you're pointing back and find the vertex now, I would say that we, we could really help to simulate some of these things and see how well we can actually resolve the vertex depending on the mass of course if the matter is 10 GB.
WH13NW- Oscillatorium: The opening angle is bigger, of course, depending on the momentum, but we have to see how well we can do that, there will be background from pies errors coming out to the back of the of the absorber at the front.
WH13NW- Oscillatorium: or or even from the hottest scope and cameras and there'll be some pilot background and we're talking about 10 to 15 punch crossings so.
WH13NW- Oscillatorium: So we have to worry about things like that, but the energy resolution of the hga cow section is supposed to be very good like one and a half percent or something like that so here's an opportunity for somebody who would like to do some studies of the.
WH13NW- Oscillatorium: Of this.
WH13NW- Oscillatorium: And here's the four seek lot showing the coverage these any particles basically like lps that go to go to gamma gamma and as his coverage they're up to.
WH13NW- Oscillatorium: Up to.
WH13NW- Oscillatorium: 40 4045 now timing is important we think of two reasons, one is that if you have timing on your tracks or color image information.
WH13NW- Oscillatorium: Usually the vertex same requirement two tracks to be not any coincidence in space, but also in time and because there's a time spread of the conditions in the bunch of crossing over about two pika seconds if you're much better timing resolution, then you can do a four dimensional bertuzzi.
WH13NW- Oscillatorium: question is for the timing and the tracker nation code is good enough for do we want to add layer or something like that not sure what the answer that yet.
WH13NW- Oscillatorium: But because the bunch crossing spread that limits that you don't know the time of the origin of the particle.
WH13NW- Oscillatorium: So when you measure the time of architectures.
WH13NW- Oscillatorium: You have only a constraint on the mass of the particle from its time of flight if the mass is low enough momentum is high enough.
WH13NW- Oscillatorium: Is it Mr X is low enough basically so here's an example of the flight time difference over 125 meters between the park with mass m to 510 gv and a neutron, for example, even though they can't get to me absorber.
WH13NW- Oscillatorium: Over this distance and this is time different 10 pika seconds hundred pink and seconds a nanosecond and there's one example here if there were five TV particle the momentum of 103 B or C it comes, for it and pray Pico seconds later than.
WH13NW- Oscillatorium: Actually, born in 60 seconds Pico second base.
WH13NW- Oscillatorium: neutrino so we couldn't we can use this, but some heavy particles and additional constraint on the masses.
WH13NW- Oscillatorium: Is is another plot comparing some things with with faiza so obsessed by this but, but this is the probability of the decay in a length that we have of 18 meters.
WH13NW- Oscillatorium: versus the lifetime lifetime, this is a gamma see tower in this case hundred meters 200 meters and face it comes in, only for long lifetime because it's 400 meters away.
WH13NW- Oscillatorium: The collaboration and it's only got five meter length of the case, whereas we are closer in, and we have an 80 meter length, so we have a much bigger acceptance of things, especially with these lifetimes but but anything even a kilometer lifetime, which is here.
WH13NW- Oscillatorium: We do much better than phase it in terms of the probability of decaying in that lane and there's also a solid angled factor of four.
WH13NW- Oscillatorium: Because we're half meter radius frenchie whereas there a meter radius or four and reaching the so that's a factor for a certain angle so that's that there's a reason why we we do my fat and phase two, which of course not approved, yet either.
WH13NW- Oscillatorium: But this separate experiment.
WH13NW- Oscillatorium: So what's a plan to integrate so we want to propose this is a new subsystem for cms to be integrated with cms in terms of weed out everything.
WH13NW- Oscillatorium: All the detectors we plan identical to plan upgrade detectors only about 5% of the area, so we don't need separate carne de de acute would be the same, and so on, so maybe we can hope to add our at our request, so that purchases and so on.
WH13NW- Oscillatorium: To do it somehow.
WH13NW- Oscillatorium: And we'd read out these to check this with all cms events of course zero suppressed have a very small events compare with the central detectors.
WH13NW- Oscillatorium: And we would have a distinct number one trigger from facet to say here are two tracks or more tracks that appear to come from the vertex inside the vacuum Chamber Jerry Heller talked about that to one of our meetings.
WH13NW- Oscillatorium: And without becoming charged particle in line so we use the hardest scope elements as sort of taggers and then they sheltie refining selection for reconstruction of usual now, we could also necessary send facet only data to have separate stream Defense very small.
WH13NW- Oscillatorium: But we hope to get the trigger down so that we don't have to do that, or would be useful, but the thing is a correlation between the central cms event and facet is probably not useful because we don't know which of these events was coordinated with the one that the candidate, we saw.
WH13NW- Oscillatorium: But on the other hand, is going to be probably some low pilot P P and P oxygen or other heavy on the conditions and then by correlating what we see in facet with what we're not longer particles, but actual you know, though maxie pears pears, we can just immunity studies.
WH13NW- Oscillatorium: particles have come through the aperture these magnets and momentum analyzed and find the next between point 1.3 they get through so that's some standard physics, that we can do in the lower part of running not to housing.
WH13NW- Oscillatorium: that's that's an add on if you're like.
WH13NW- Oscillatorium: Now we have we have we're having a two day meeting at CERN planned in the week before cms week at the end of June Friday and Saturday that'd be half days, of course, to match with the timing.
WH13NW- Oscillatorium: And then we want to review all aspects prepared letter of intent to cms and write a draft in July, when we submitted as a sort of political question because it got changed spokesperson coming in and.
WH13NW- Oscillatorium: Of course, the presence, both people don't really want to know about this it's more more to do and they're busy enough anyway.
WH13NW- Oscillatorium: But the key thing is, we need to get that large being piped into the planning for three or no and that's going to happen, hopefully, you know.
WH13NW- Oscillatorium: This a try and get it into US request by the end of this year, needs a cms request to the energy to do that.
WH13NW- Oscillatorium: But these are all the sort of things that we sections, if you like, of this document that we're working on, and I, and I bite people to get involved for itself if you're working on the tracking on the cameraman free sign even help put together i'll put together this document.
WH13NW- Oscillatorium: We have a provisional pre designed the neon spectrometer that was done permit up here so i'm cost of funding timelines and.
WH13NW- Oscillatorium: Now we will be seeking external funding for this.
WH13NW- Oscillatorium: problem sponsorships or something, because obviously the funding is pretty tight, but if we can get some money extra then bit better chance of that happening.
WH13NW- Oscillatorium: And we had a meeting with setup actually session challenged King he's a firm enough now is accelerated individually.
WH13NW- Oscillatorium: But, but he.
WH13NW- Oscillatorium: And he was with the hcm we have a meeting with some people that's this I just put this here because.
WH13NW- Oscillatorium: They say next it by experiment time to to the layout and service and so on, so forth, so we've got some homework to do there and then.
WH13NW- Oscillatorium: Eventually, go to this get our cms and they can ask for for a status to be done more detailed study to be done by the other day, but we don't see any show stopping.
WH13NW- Oscillatorium: So just to summarize is ready and the strengths as long as part of the search are not funding and backend for decades 14 kilometers of unique at the end he.
WH13NW- Oscillatorium: Fixed targets criminals do have set up back here hypothesis and tracking and immediate color imagery with he counts, I modules.
WH13NW- Oscillatorium: Probably silicon all the way through to reconstruct it isn't vacuum, a lot of shielding and the direct path penetrating on the particles.
WH13NW- Oscillatorium: We have background from particles hitting the bean pie, upstream, and we have to cope with that and Dan Greens been doing a lot of studies about that actually with fluker.
WH13NW- Oscillatorium: files there no direct charged particles ever most of the area because of swept aside by the magnets here boosted lifetimes after kilometers.
WH13NW- Oscillatorium: And masses in this region, depending on what they are, but what this this higgs is very intriguing there could be another higgs.
WH13NW- Oscillatorium: Masses up to 16 GB that we could see from the Catholics, the case to them and then the ability to reconstruct my part of the case.
WH13NW- Oscillatorium: see something like this in the background, no background at all so it's complimentary to all he sent me a text searches and other experiments such expensive fixed target and the other departments and we had no help from these colleagues in the lsc.
WH13NW- Oscillatorium: Thank you.
WH13NW- Oscillatorium: So let's move on to people in the room.
WH13NW- Oscillatorium: You mentioned backgrounds have.
WH13NW- Oscillatorium: been hello, not much of an issue or.
WH13NW- Oscillatorium: No, well, we were starting to detect as a radius of 18 centimeters already, we were initially danger because around the beanpot but we've.
WH13NW- Oscillatorium: Already we've already big enough that that there is still background from being hated particles hitting the pipe upstream, but we track them back, we see they hit the beanpot spree so that's a cuts that we can do so we'll be looking at the tracking for tracks that come.
WH13NW- Oscillatorium: come from a higher rate than they would from the beam now, I have to say that that's been a concern, because we think every punch crossing.
WH13NW- Oscillatorium: They can be around 2030 charge tracks and tracker actually it's not being super clean and then they all they all come basically from from in terms of being hailer on the beanpot.
WH13NW- Oscillatorium: Upstream so, but how far is that going.
WH13NW- Oscillatorium: But like what's the distance, but those particles are coming well if they Okay, this is a plops that damn sharing they come mostly from around the.
WH13NW- Oscillatorium: d one type whoa Okay, which has got a rake radius which is less than 10 centimeters there and then they can they're bent to left and right by that time.
WH13NW- Oscillatorium: So that background is more on the left and right sides.
WH13NW- Oscillatorium: By the bed oh.
WH13NW- Oscillatorium: Not enough We well, those are coming from beyond the one says no magnetic there's no magnetic bender now we We considered whether the absorber that we put in front of the horoscope.
WH13NW- Oscillatorium: could be magnetized like a tour guide to kick product without can seem to a big big difference and, of course, more complicated right there.
WH13NW- Oscillatorium: But one thing that we're still trying to find out, is where there are places.
WH13NW- Oscillatorium: Where we can put shielding on the left and right sides of the beam further upstream to kill a lot of this background and we've asked the.
WH13NW- Oscillatorium: Guy says son Luca calculations to do some small standards because we're prohibited from going all around the beam pipe.
WH13NW- Oscillatorium: By this is complicated thing called D fx it's to do with this superconducting machine it's about but it's above the beam so, then we can go on the left and right sized with more absorbent.
WH13NW- Oscillatorium: So we still hope that we can reduce that flux, but it's still be something we have to cope with it's not it's not super clean it's reading hide them nasty but.
WH13NW- Oscillatorium: Then, and then we have the horoscope the horoscope will have on average per bunch crossing a 10 to 15 particles in it, but because we have the idea of small branded actually charron cough quotes box an iowa is interested in making that.
WH13NW- Oscillatorium: testing and her family.
WH13NW- Oscillatorium: So actually you know if it my dreams feminine could actually play a big role, not only with all the cms people but, but also that tornado magnet is something that firm enough could be could could do and it's not that expensive.
WH13NW- Oscillatorium: But they they really think it keeps me up we gotta get that big impact and stored for the next run because, then that means having on the agenda by Valerie interesting yeah, otherwise we lose the whole little extra the other detectors can critical come in technical stops and saw.
WH13NW- Oscillatorium: The hottest scope and tour right because they before and often they're not depend on it so that we get those in as well get started, then.
WH13NW- Oscillatorium: If we are limited by five private sources that build up the full as most of the he comes tracking if we can't get Gordon they could be added and entertainment stuff big pipes coming in.
WH13NW- Oscillatorium: So, actually, I took the job you can about about this and said well.
WH13NW- Oscillatorium: And he actually said, well, I mean he likes the idea, and if we find the engineering time of feminine to work on more development design and then he could get some funds for that let's say if I mentioned at.
WH13NW- Oscillatorium: times there was correct, but.
WH13NW- Oscillatorium: One other background question cosmetics incident angle.
WH13NW- Oscillatorium: I think know corporate background because they've got it they've got to be pointing right back to Israel angle, and it goes through advertising as.
WH13NW- Oscillatorium: Well, having said that, there will be shops, cosmetics and he account but they're not pointing.
WH13NW- Oscillatorium: Any other questions we're here.
WH13NW- Oscillatorium: Maybe a quick question about the the lifetime of this detector thing so let's say, given the location of that so there must be a radiation damage from yeah time is the mission that how many years it could be operational and then after that we have to replace yeah yeah.
WH13NW- Oscillatorium: Definitely, are a lot more likely to get a bunch of stuff down there.
WH13NW- Oscillatorium: it's actually.
WH13NW- Oscillatorium: To fair approximation the radiation levels and these detectives here are the same as in the Ford car imagery but he he he really he can look will be has with with with further away, I mean we try for him, but either way, but we also shielded by so much shielding.
WH13NW- Oscillatorium: So it's it's similar within a factor of two or so now do we have to live for three inverts at the bonds actually i'm thinking run for the next round it's only explicitly wanted, but sound about right so.
WH13NW- Oscillatorium: If we discover something run, for we cannot be fun to do an upgrade then they'll get funded or.
WH13NW- Oscillatorium: replacement it's very possible.
WH13NW- Oscillatorium: yeah upgrade as well.
WH13NW- Oscillatorium: I I would hope that, I mean it's Look, we got both expertise and working on the upgrade detectors and and a little bit of time.
WH13NW- Oscillatorium: To help put together enough information for the letter of intent it doesn't have to be technical designs.
WH13NW- Oscillatorium: To I mean already, we must have and we could we could put the letter of intent and now, but we know that the presence, both people are gonna say I don't talk about anything yeah.
WH13NW- Oscillatorium: But.
WH13NW- Oscillatorium: But I mean this is not an upgrade to see him so it wouldn't be upgrade coordinator has handled this is its new subsystem right so good to be with.
WH13NW- Oscillatorium: cms has taken seriously, but it's it's I can't give you, you know it's not expensive compared you said 5% of what we need right.
WH13NW- Oscillatorium: yeah.
WH13NW- Oscillatorium: And maybe you know we could accept the slightly lower standard in terms of debt channels that the brain says oh yeah.
WH13NW- Oscillatorium: see that definitely be like look there's 5% there.
WH13NW- Oscillatorium: Any question sorry about that so again.
WH13NW- Oscillatorium: Maybe I missed that so so as mentioned on the time resolution of the.
WH13NW- Oscillatorium: visit detector, for instance, I know that during Operation time, so the let's say the luminosity is increasing and the pie, and also the average of have will also increase so let's say we have a kind of a.
WH13NW- Oscillatorium: estimation, about the threshold that how much pie off of the detector handle at a maximum level, for instance, well, which OK, so the, the idea is the readout this.
WH13NW- Oscillatorium: is like 25 milliseconds between bunch of crossing right that we want, we want to read read out for what each one crossing separately every bunch of crossing.
WH13NW- Oscillatorium: We wanted to look at every bunch of crossing right, but then have a level one trigger that says Okay, this is two tracks that seem to come from inside the thing and so.
WH13NW- Oscillatorium: And then Okay, the time actually I could offer you the time resolution that we plan on the cbot tracker, for example.
WH13NW- Oscillatorium: We get we get time with the better space right.
WH13NW- Oscillatorium: that's a question that the love of a harder.
WH13NW- Oscillatorium: look up a second fun i'm sure.
WH13NW- Oscillatorium: Many hits attract.
WH13NW- Oscillatorium: attract not here anybody got remember if we have a trial with them with the tracker would have full for X, Y debits Okay, so we get 8888 points on the track.
WH13NW- Oscillatorium: And the cmt.
WH13NW- Oscillatorium: eight points with we get something like a second timing.
WH13NW- Oscillatorium: And then, as a child, the coloring the choice well right which I I don't really know what that is but that's going to be one slower or that's that's not.
WH13NW- Oscillatorium: Really, my I don't know for sure, but are you talking about like the timing between within this first and the last or or what suppose we have another one that comes right after it would no one hga photon ciao or electron shower Okay, then what's the timing resolution we get on that shower.
WH13NW- Oscillatorium: yeah I would.
WH13NW- Oscillatorium: I think it's better than other people saying Okay, I like that better and if if we needed them we did talk about having a now gap layer
WH13NW- Oscillatorium: There, which That would be a great addition anyway, better separate give us like 30 seconds with.
points.
WH13NW- Oscillatorium: and
WH13NW- Oscillatorium: And so you know if we have some candidates better candidate for something that says 1015 TV, we have time to fly over that distance and that would be an additional constraints on that.
WH13NW- Oscillatorium: So in the track now tracker and all that so let's say we have let's say the online instruction will be able.
WH13NW- Oscillatorium: To race and also offline so offline like you just described, or different tracks missing something times it's slower than all at all, I think it was kind of for foster simulation or algorithm to.
WH13NW- Oscillatorium: to handle that it is faster probably yeah around the peak people's people seconds, I think, maybe even not big the seconds 10 so yeah yeah but I don't remember.
WH13NW- Oscillatorium: I remember i'd like to test courts timing chair encounters with God we got down to 15 seconds actually with a certain ports bars and micro template.
WH13NW- Oscillatorium: But then actually that this is a so the PPs project for protons they decided you southern state detectors like our city council diamond and they get like at because seconds per plane.
WH13NW- Oscillatorium: Right yeah.
WH13NW- Oscillatorium: But when you were talking about the the.
WH13NW- Oscillatorium: The trigger the trigger what kind of rate you expect oh right okay so.
WH13NW- Oscillatorium: The speech started, but we think that we can come in with a trigger rate that's.
WH13NW- Oscillatorium: The trick is lemon tree in the we have upgraded right.
WH13NW- Oscillatorium: I think we've.
WH13NW- Oscillatorium: we've throughout the lesson a few percent of the of the trigger we come in with additional Level one trigger 8% that's.
WH13NW- Oscillatorium: kind of course we can vary, but do you expect that you know because okay now if it is a you know you don't know your your signal being accepted that you said is not standard model yeah but.
WH13NW- Oscillatorium: The background that that would trigger is at what level would it be like, would you get it at the level of you know, like one hurts to quarter yeah like once once per second and how of utility.
WH13NW- Oscillatorium: yeah.
WH13NW- Oscillatorium: Okay, find the numbers and so on, then one trigger has to be reasonably sophisticated have to reconstruct tracks a straight track lemon in that field so reconstruct two tracks and.
WH13NW- Oscillatorium: Why the upstream, and so they came with a few millimeters of each other Okay, and there was not charged track coming in from a horoscope pointing to that and, with that it's a very powerful trigger with that yeah It means that So if you expected to fire, you know almost never right yeah.
WH13NW- Oscillatorium: it's almost never yeah yeah but I was wondering if you knew that, from whatever background, you have from the empire, but whatever else that you expect that you know you have something that you can tune with right and you say okay if we allow for.
WH13NW- Oscillatorium: Some so you know, again, the purpose of the trigger you want to get rid of the background and getting that stuff you want yeah yeah Is there something that you can tune it and say yes it's working, because I can see this right.
WH13NW- Oscillatorium: wow okay one more studies, at least with the secret nations fact that the word what one of the things that irreducible we didn't have a short coming in and became to highs and lows and use their their their and and we know the range of those but.
WH13NW- Oscillatorium: So that was actually limiting our ability to see anything going to pi pi around 500 anything but the cases they go to new paths, we will get we get those.
WH13NW- Oscillatorium: And we actually have calculated how many I think we'd get 2000 okay Sarah to to move plus minus over the run 2000 but that's.
WH13NW- Oscillatorium: What we're talking about is the how how tight, can the Level one trigger be made and it's crucial that level one trigger take data from the tracker reconstructing the straight tracks combining a pair of them in pairs to see if they come from a common vertical close.
WH13NW- Oscillatorium: The bed express solution is 100 microns so X, Y so but we listened to the trigger course and that there's no chat pod coming in, so got to correlate the hottest together with with chuck chuck information and that's a study to be done so.
yeah.
WH13NW- Oscillatorium: Because I was wondering when you were showing you, the first time, whether the the background that you said on the backup that absorber what it that is too much for you know that that.
WH13NW- Oscillatorium: That you will see stuff going in like like like you said, like a neutral some neutral that article that.
WH13NW- Oscillatorium: So what what what is so important is a really good precedent tracking tracker that we have three meters of tracking you know with whatever layers of thin thin window the back of it.
WH13NW- Oscillatorium: together so it's a good study to do and.
WH13NW- Oscillatorium: we've got many of those sentences.
WH13NW- Oscillatorium: For that so i'm sorry to cut you off there continue yes.
WH13NW- Oscillatorium: I wanted to just give another hand.
WH13NW- Oscillatorium: yeah man, thank you, and hopefully next month we'll have another one.
WH13NW- Oscillatorium: Later in the month.
WH13NW- Oscillatorium: In May.
WH13NW- Oscillatorium: it's all right yeah I.
WH13NW- Oscillatorium: think everybody by their side.