Margaret Lutz: hi everyone welcome back 1550 so we can get started, and so as Jim said before, I think, are in dire need to be getting who will start with another talk about long of having a lap dance from Germany.
Margaret Lutz: Hello.
Margaret Lutz: hey yes.
Giovanna Cottin: So I will share my screen.
Margaret Lutz: Yes.
Giovanna Cottin: Okay, great Thank you.
Giovanna Cottin: So yes, so this is also concerning heavy conductors, and today I would like to tell you about a work in progress, not the public but i'm happy to present some results on prospects for he announced with a new signature or flag displayed shower.
Giovanna Cottin: So, as you know, he knows can be nice but.
Giovanna Cottin: If the html has massive around the gds fail, a it has low enough makes sense, then it could be gay within certain.
Giovanna Cottin: Regions of acceptance of a legacy that actors and, as you heard in the video stuff so i'm not gonna go further into the motivations but.
Giovanna Cottin: It just to comment on that there's been recent elledge ch not searches both but by the address and cms, and these were presented at this workshop.
Giovanna Cottin: And in these searches and it basically they consider triggers on prominent those either electrons from humans.
Giovanna Cottin: And they require our displays vertically to identify with the signatures come home late, you know the game, but the case be are missing, with the with different flavors of the constraints are a highly efficient in the electron you're mixing.
Giovanna Cottin: It plain versus hmm mass so as far as a we understand this, we know the town mixing it's currently a slow got a delicacy know what you cover So what can we do, and this is a question.
Giovanna Cottin: And that basically motivated the starting point of this idea, which was presented assess know most interest, unfortunately we we missed.
Giovanna Cottin: The deadlines, but i'm happy to show you some preliminary results in this talk so basically what we do, to address the coverage of mixing with the channels.
Giovanna Cottin: is to focus on a search in that cms has performed for long particles again in the cms and community.
Giovanna Cottin: In Berlin, Berlin clinicians so this search was highlighted actually also in the experiment by overview talk at the beginning of the workshop.
Giovanna Cottin: US are new or novel a usage over the doctor handles so this search it originally is interpreted in the context of some of the higgs boson digging too long the scholars, which can then the case subsequently through town.
Giovanna Cottin: Now the unique features of this no research is I realized on the cms New York and that's the director to be sort of like the sampling calorie method.
Giovanna Cottin: And it sensitive the searches sensitivity to showers produced by 11 piece which the gate to find out stating greenhouse items.
Giovanna Cottin: Such as towels electrical fordham's but here we think Okay, maybe we can implement the same search but dedicated for agent else which candy gate to.
Giovanna Cottin: Taking advantage of the properties a background submissions for the cms a steel shielding, which is particularly useful in our case that we have a single eligibility K and also due to an ironic, though the case.
Giovanna Cottin: The display shower signature could be efficient and and the signature relies on on this variable that basically it can can kind of comes at rakuten the Pacific clusters.
Giovanna Cottin: Of the Council chambers hits in your system is the CSC, so this is a picture of what what is this place shower signature form the cms a paper, so this is a cluster of its basic.
Giovanna Cottin: And now, in the past nlp workshop and Christina Christina Warren presented their development of a delegate the deaths module.
Giovanna Cottin: And that it can actually simulate I mean this was an order to simulate the cluster feats of the immune system that actor a cms and it, so this is the.
Giovanna Cottin: virtue, to look at for here must talk here because we use this module in order to return with the cms search result.
Giovanna Cottin: Now, in the original a search at cms also provides material for interpretation they provide solutions efficiencies that we need to basically account for the 25.
Giovanna Cottin: The cluster level selections that that that that we do, and they also found some auxiliary interpretation but reinterpretation with during the day that's what we use all of that.
Giovanna Cottin: In our closet simulations, so this is sort of the pipeline and and just abandon that in order to do this recommendation for H analysis would need the html energy at the generator level.
Giovanna Cottin: Under the positions or neither first innovation now this analysis, so we didn't triggers on net.
Giovanna Cottin: and requires a at least one CSC cluster that capacity is defined modules where we are that's too late and encode.
Giovanna Cottin: A all the parameters function, depending on their fb energy and bk regions provided in the auxiliary materials, the cms search.
Giovanna Cottin: Now, on the right, you can see, are very limited preliminary results on reconstruction efficiencies for the CSC cluster.
Giovanna Cottin: And here we are showing two types of html so basically he knows mixing entirely with electrons, this is what we call electron type html.
Giovanna Cottin: And a 100% sort of mixing without a, and this is presented here, you can see how the efficiency of these the aggressor efficiency right a goes up as a function of the energy as sort of reaches a plateau for energies around 400 days.
Giovanna Cottin: Now we basically implement these straightforward recast to constrain the economics in verse massively, but we also developed.
Giovanna Cottin: A proposed to different of decisions struggling so one of these first strategy is to basically tighten up these and his cards, which is the main.
Giovanna Cottin: discriminated about variable and keeping the material, so we basically to this.
Giovanna Cottin: End hits in order to suppress backgrounds, without rejecting too much sooner, but we also proposed a single study which relies in the potential use of our new dedicated displace trader a plan to be.
Giovanna Cottin: implemented for run three, and this is a trigger Doug was also highlighted in the review, a paper for the interview working group, so I need you to reference there and also these a three year plan was presented in a previous interview workshops.
Giovanna Cottin: Are the seven version of these workshops, so I also wanted to give to take a look at the stock.
Giovanna Cottin: So basically this also sort of a I think it's Nice because it also addresses the challenge of displaced readers and we basically lower our medical oncology nurses from 250.
Giovanna Cottin: and increase the number of clusters and the burning on the luminosity in their their choices, support for for this graph a also optimize to confirm backgrounds and.
Giovanna Cottin: Increasing acceptance and we basically made a three order of magnitude again it with respect to the nominal missing energy and a number of hits that that the original cms search.
Giovanna Cottin: And we will give us four H nails now, these are our results, so I government on the total age now, as I mentioned, you can see, in in the grave shaded area they'll a grand experiment only excluded regions.
Giovanna Cottin: And in in later corners like few colors that are projections for for both fire detectors.
Giovanna Cottin: And, such as face Sir Michael Sam sheep which sort of gives the envelope of the best sensitivity in this region, and all of our.
Giovanna Cottin: Studies in this work are represented in the actual solid lines, so the straightforward request is presented in blue, we can see that we're not able to access much, much parameter space that is not already excluded, but.
Giovanna Cottin: With the different an optimized strategies, a survey that you want, which is relying on the same trigger but optimizing them.
Giovanna Cottin: And you can already see that we can reach sort of balance of the meetings with them to minus five four and let's say muscle day chanel between four and five touching regions not already excluded.
Giovanna Cottin: For displace to your scenario, especially apply them in our CD, then we can reach me, since as low as five times 10 to the minus seven.
Giovanna Cottin: And eight nine losses between one and sort of six do you guys combos, and this is complimentary to what I propose for that person and say about display.
Giovanna Cottin: And also cover we basically show overarching figures and explore regions of parameters face in the indigenous meeting with those case, so I think this is it very nice.
Giovanna Cottin: Okay, so as we only have 10 minutes over one time, I just wanted to give a summary so basically we won, there was the score every potential for he knows mixing with towels.
Giovanna Cottin: And we identify that the previous cms to what this display shower signature can also will also be sensitive to he nails, and this was the study was not.
Giovanna Cottin: possible if we didn't have a way to quantify the cms cluster detector response and we could do that because of the new delves a tune or module.
Giovanna Cottin: And that is currently buyer lead us to more than and the performance such displays shower signature, so we basically performer straightforward because.
Giovanna Cottin: Of the the search for new therapies, the game in the same as your end caps and in the context of them have a channel scenario we also proposed to different strategies, a one basically doing god's.
Giovanna Cottin: A with respect to this, the original research and also another one that relies on a dedicated displace trigger that could be implemented for run three of the lexi.
Giovanna Cottin: And we presented the sensitivity estimates focusing on Tommy seen taking advantages of these high cluster efficiency for android showers of research, study and, yes, so we basically am conclude that unit reduce support amateur space, it could be access in html mixing versus last day.
Giovanna Cottin: It.
Margaret Lutz: was given this very interesting and while time talk i'm.
Margaret Lutz: Also display showers, are there any questions.
Matthew Citron: Can I ask a quick question if there's nothing else.
Matthew Citron: i'm very curious did did you look at the sensitivity for other.
Matthew Citron: Things as well.
Giovanna Cottin: Yes, this is very good question so we did in the background of my talk, let me show you the results for the electrons and and.
Giovanna Cottin: Here so basically we explore make sense, with electron some towels electrons a you can steam cover some or previously Alex per region from your space, but with nuances is tricky because we.
Giovanna Cottin: Basically, there is not enough public information and for their interpretation to to sort of accurately estimate the sensitivity over this place.
Giovanna Cottin: That would be gain the system so basically we'll leave that study for for the future.
Matthew Citron: Okay, thank you, that makes sense let's see sensitivity possible also the electrons that.
Giovanna Cottin: yeah it could be the same as such a sensitive to also electrons like shower legs, in the final state so.
Giovanna Cottin: Yes, but by the fire gain that we identifies without particularly so.
Giovanna Cottin: This is why I like.
Matthew Citron: Thanks.
Margaret Lutz: Thank you so much.
Margaret Lutz: Giovanna and automatic for the question.
Margaret Lutz: And now we can move on to attack from guard undisclosed flavor and CP cemeteries and gliders.
Garv Chauhan: Can you see my screen now.
Margaret Lutz: Yes, I can see it's not full screen mode, but I can okay there we go Thank you.
Okay.
Garv Chauhan: Thank.
Garv Chauhan: Thank you.
Garv Chauhan: So i'll be talking more discreet flavor stp symmetries and its implication for collider searches.
Garv Chauhan: So this work is in collaboration with the Bhopal there at Washington University in St Louis and this work appeared last December on archive so you can take a look so to begin with, and to motivate the work.
Garv Chauhan: So we know that neutrinos have masses and the most common and simplest explanation is through addition of a right hand and neutrinos to sign and model so, as other speakers have already discussed about it but.
Garv Chauhan: there's the European Western for the neutrinos and, in addition, you have Mr and Mrs trump's coming from this case singlet of the standard model.
Garv Chauhan: So you can have the in the flavor basis the the math matrix for these neutrinos as follows, and if the scale of this new physics, which is given by this, Mr is heavier than the empty, then you can have the following CSR relation as it's called.
Garv Chauhan: Since the lightness of the neutrino mass is explained by the heaviness of this new physics.
Garv Chauhan: So this can not only explain the neutrino masses by quantum mechanics, but it can also lead to the generation of Barry on asymmetry of the universe so it's a very attractive mechanism.
Garv Chauhan: So, usually this parameters, Mr and windy they are three parameters and the theory, but we can constrain them by using flavor and CP symmetries so i'll not be going into too much mathematical details but i'll just try to motivate the work by some heuristic arguments.
Garv Chauhan: So had some high energy scale we can posit that we have some discrete flavor cemetery group GM for the left hand sector and Sep cemetery group show near stp.
Garv Chauhan: and which, at lower energies breaks down to this residual cemetery groups shown here by G amp G new.
Garv Chauhan: respectfully for charge leptons and neutrinos so for charge leptons this residual group is the three since the three leptons have different and distinguishable masses.
Garv Chauhan: And we work in a basis were discharged slept on mass matrix is diagnosed, so in that case the contribution to the electron mixing matrix from the charge left on sector is.
Garv Chauhan: it's just an identity matrix so the whole of the PMs matrix contribution just comes from this group genome, which determines the form of this mixing matrix.
Garv Chauhan: So, given the generator of the Group of the CP transformation and given here by X and the generator of this group Z of gives the two given here by Z with basically generates this group genuine we require that this.
Garv Chauhan: This you cover matrix weide should be invariant under the action of this group gene you as captured by this equation, and also under the The effect of this secret transformation.
Garv Chauhan: generator given by X this wide he should go to why the start so once we have this ingredients and there are little more which i'm not discussing here, but you can ask me after the talk.
Garv Chauhan: We can change to a different basis by using a unitary matrix Omega which is basically we find by diagnosing this generator Z.
Garv Chauhan: Then the form, for this weide can be written as follows, so it's given by this unitary matrix Omega times this rotation matrix are AJ parameters by angle theta l.
Garv Chauhan: I am so this Omega dagger times this diagonal you cover matrix why on my two by three times another rotation matrix in kl plane.
Garv Chauhan: And parameter is by angle theater before I discussed a few other things in this relation, let me also say that the PMs matrix in this scenario is given by this again by this unitary matrix Omega times the same rotation matrix that you saw here are I J.
Garv Chauhan: parameters bangle fetal times.
Garv Chauhan: matrix Kenya, which is just rephrasing matrix so it just takes care of the fact that when you're diagnosing the seesaw relation, for the light internal masses.
Garv Chauhan: The neutrino masses comes out to be real so that's all it takes care of itself facing materials.
Garv Chauhan: So we see that, since the PMs matrix is known, we can just fit it to the currently experimental measured angles, and so this data is in a sense.
Garv Chauhan: fitted and is unknown parameters so in weide this religion in why the free trial is known.
Garv Chauhan: Why one why to it can be written in terms of the light neutrino masses of course as a function of the lightest neutrino mass.
Garv Chauhan: And times this rotation matrix as a function of Qatar so basically this weide is a function of data that is something I want to take a want you to take away from this equation.
Garv Chauhan: So, moving on to the important part, so the decay rates of this right handed neutrinos entry level is given by this combination of this widely dagger windy times the right hander neutrino mass scale.
Garv Chauhan: Since one of the simplest cases the decay rates for these three heavy right hand in neutrinos.
Garv Chauhan: are just function of this right hand in neutrino mass kill em and you covers and the theater are.
Garv Chauhan: The important one, is this the decay with for entry, which is here geometry.
Garv Chauhan: So far as trying normal and strong inverted ordering which corresponds to the lightest neutrino mass to be zero in the respective ordering.
Garv Chauhan: For example, in strong normal ordering you have by one equals two zero or strong inverted ordering you have by three close to zero, we can notice that if.
Garv Chauhan: That happens if my money goes to zero, then gamma three can tend to a value of zero if theater takes on special values which is.
Garv Chauhan: pi over two and three pi over to for the strong normal ordering and zero n pi four strong inverted ordering.
Garv Chauhan: So these points are turned as enhance residuals cemetery points and what happens is since the decay, but tends to zero there's this entry can then have a very long lifetime.
Garv Chauhan: around these points, so this if the efficient production mechanism is available, then these entries can be seen at long lived particles.
Garv Chauhan: So here i've plotted.
Garv Chauhan: The decal and versus this parameter theater are here, we have assumed that the production of this right, and in neutrino takes place by decay of.
Garv Chauhan: Z prime will see later that we do need an extra engaged in like Z prime for the production, efficient production of these right and in neutrinos.
Garv Chauhan: So this is the prime minister said to for TV and, for they can have less than one centimeter they can be seen as a prompt or displays vertex signature say also at lc.
Garv Chauhan: But beyond that they can be detectable at llp searches, so we see that definitely this entry becomes very long lift and this ERS as shown here at pi over two and three pi over to.
Garv Chauhan: We also see that as the right hand in neutrino mass scale becomes higher, we see that this dependence on data becomes narrower, it becomes sharpie.
Garv Chauhan: So similar for inverted ordering and the only difference between on in normal and inverted ordering here being the value at theta which where you find the ERS is different, which is zero and pie for inverted outline all of the results same remain qualitatively same.
Garv Chauhan: So this was for strong and normal and inverted ordering but you might ask like what happens if your lightest neutrino mass is not zero so we see here that.
Garv Chauhan: Even when i'm not is not not is non zero like, for example, tend to bar minus three ev we see that the dependent on the sharp dependence of having a long lifetime becomes less pronounced, but still there is some region that where it can still be seen at llp searches.
Garv Chauhan: So similar dependence remains for the inverted ordering case i'm sorry here it's a typo should be an ordering.
Garv Chauhan: So we see that at this ERS these entries can become long lived, but the point is, do we have a production mechanism through which we can actually see them.
Garv Chauhan: would they be applicable number of events at colliders so for this, we see that if we really have this type one seesaw scenario.
Garv Chauhan: And then the brilliant production channel is highly surprised because the colors are really small in our case.
Garv Chauhan: So in that case we need to go beyond this minimal Type one seesaw to realize this, a sizable left on number of validating signal for this weekend embed the standard model in a larger gets symmetry.
Garv Chauhan: and
Garv Chauhan: The most obvious like minimal and UV complete extension like where you would not need any more ingredients is you won't be Marcel.
Garv Chauhan: So in this the right hand and neutrinos are produced by the DK of this, the prime as I was discussing also in the Declan section and the final visible signature is for jets and to leptons and best thing about this signatures is that you can have.
Garv Chauhan: same sign developed on channels signal, where you have non to zero background, also from standard models so it's really useful.
Garv Chauhan: For my last plot and uploaded here on the y axis the production cross section of the right ended neutrinos.
Garv Chauhan: And on that success is this the right hand in nutritional mass scale for given mass off mz prime which is four, five and six TV and different Center of mass energy so at.
Garv Chauhan: LSE central facility 14 TV and a feature collider Center of partners in hundred T So although the production costs section look really nice.
Garv Chauhan: For the low mass range of this for this right any neutrinos, but this should not be taken on the face value, because this is done for the B minus all coupling of set to one so it's a normalized plot, but they are current constraints on B minus cell coupling versus the MC prime mass so.
Garv Chauhan: Realistically we see that for like Center of mass energy 14 TV and MC prevalence of for TV and the number of events will be actually less than one so.
Garv Chauhan: Prospects become a little better if we have a higher the primus of like around six TV where we start to see like some on 10 or on an order of 10 events.
Garv Chauhan: And llc and for future collider for future hundred TV collider the prospects, or better even for the lowers the plan mass which can give up to like 800 events.
Garv Chauhan: So to sum up my talk I discussed that type on seesaw can generate neutrino masses and also the barrier asymmetry of the universe.
Garv Chauhan: generically it has three parameters, but it can be constrained through the use of flavor and CP symmetries.
Garv Chauhan: So the declines of this having neutrinos does depend on this weide which are constrained through this flavor symmetries might exhibit this enhanced residual cemetery points.
Garv Chauhan: And at this ERS points this one of the writing and neutrinos become long lived and can be probed at llp searches.
Garv Chauhan: And maybe the rest of the two can be searched why the prompt or displays vertex signatures at LSE.
Garv Chauhan: And another important point was that efficient production requires going a little beyond Type one seesaw and it can be done easily by embedding a minimal model, like you, won't be monitored, thank you.
Margaret Lutz: Thank you very much and that's interesting, are there any questions, yes, I see I see.
Arsenii Titov: Yes, hello, thank you for your talk, I have a question.
Arsenii Titov: What What do you mean by this enhanced residual cemetery point because I understand the symmetry of your neutrino mass metrics Is that true time CP and that all the chatter slept on must metrix is that three so I mean the proposal to watch have been such a special radius of sita are.
Garv Chauhan: So qualitatively, you can understand, like the when tita tends to this value the weide exhibits actually a greater cemetery than what you actually put on it like it becomes.
Arsenii Titov: Again, the second is that true or something like that.
Garv Chauhan: yeah so the wide he has like a bigger cemetery and the group see new actually at this point so it's kind of like a.
Garv Chauhan: Also, can understand it's like a technical natural, because since once you put this parameter to smaller values, you get bigger symmetry in the leptons sector that we had positive to be broken, so in that sense it's a little more motivated like Okay, it might be also near this guitar and.
Garv Chauhan: And also yeah.
Arsenii Titov: I see.
Arsenii Titov: If I can enter because.
Arsenii Titov: In UAE complete theory, you would expect, probably some flavors to realize this.
Arsenii Titov: Breaking part.
Arsenii Titov: I think he assumed that the scale of flavor symmetry breaking a size or probably will never see them collide as much food do they have potentially some interesting signatures as well.
Garv Chauhan: I actually have no idea about that, because we were like agnostic about the breaking of these discrete symmetries like how they occur, so I cannot comment on that.
Garv Chauhan: Thank you for the question.
Arsenii Titov: No worries, thank you for your talk.
Garv Chauhan: Thank you.
Margaret Lutz: Thank you very much for the talk and worse for the question.
Margaret Lutz: And I think we have time for one more question at the end.
Margaret Lutz: If not um thanks again so much for this nice presentation and just refer it is you, your focus, maybe um can you just make sure to upload the site, so that people can purchase them later if they have anything they want to follow up on sure Thank you so next we have Isaac.
Margaret Lutz: Presenting.
Margaret Lutz: dark photons and displays vertices at the new an experiment want to go ahead and share.
Isaac Wang: A lot or whatnot can you hear me.
Yes.
Isaac Wang: Okay i'm going to show us three.
Isaac Wang: Okay, and then we'll see the screen right now.
Margaret Lutz: Yes, I see the screen and now I see full screen okay.
Margaret Lutz: Okay.
Isaac Wang: Well that's pretty good.
Isaac Wang: Okay Hello everyone i'm as well i'm a PhD candidate at rutgers university, so this talk is based on a new paper with my doctor visor data days, she and a postdoc in mccalla in my university.
Isaac Wang: And Basically, this is the motivation of why we're seeing these paper of we call it, this place verdict searches on the mule you experiment, and this is the basically the motivation from the Doc Center because basically the light displays earnings particles can.
Isaac Wang: come up with the come from the Long live particles which usually plays a role as a darker mediator.
Isaac Wang: Since this is an llc workshop, I will skip this very quickly, I assume, everyone that has a somehow knowledge about this so basically Center model can have connection with dark side we're only via a call so communicator but not directly interacting with our sectors, so the mediators can.
Isaac Wang: Basically, in this mass range me me me me to gv mass range and they can so that thing we call they are relatively light and, in particular, sometimes they're requesting, so that it can be long lived right they can reclaim happening in their lives and their long lives we call it our feet.
Isaac Wang: and basically this kind of llp detection can be searched with displays the work of this, so there have interaction, as the Kleiner experiments.
Isaac Wang: In they're interacting appointed they're flying out but they're Long live the fly out after some distance before they actually the case on the products and we call these faraway.
Isaac Wang: volume, to be the decay volume and the LP can became the sticky relevant borrowed from the right point.
Isaac Wang: And they are the key product and if they're visible, they can go to the directory and stimulate some signals.
Isaac Wang: So 32 K exponentially, and this is so, so that this is their ability to get in so called decay volume with the minimum distance l mean from the interaction point of men and a maximum business or Max whether the bar for is is the is theoretically expected to K l m P along of particles.
Isaac Wang: So, in the Middle East paramount.
Isaac Wang: fast and experiment designed for measuring the elastic multi scattering that's pure acute up process, so I have a tree level diagram here.
Isaac Wang: Remember that's a pure Q ED it's a relatively low energy scale as I teach on our process measuring the running corrections to this diagram is measuring that the Fed over dt.
Isaac Wang: Especially the mentioning that he dropped his contribution to the ronnie alpha which kind of which effectively have an impact on bb Sigma over dt so.
Isaac Wang: In order to measure this us this gallery view, all these various designs.
Isaac Wang: So that they have a very high resolution for the angle measurement of the outgoing particles and that makes it very good experiment with Ted the possible these plays verdicts you back kind of party really exist so.
Isaac Wang: Let me use star quilt on the ventilator for a model as a very simplified model as a demonstration here but remember.
Isaac Wang: This is the general idea proposal, so if you want to use, we all need to detect any place vertex models are the display vertex particles any other kind of lonely particle that as a works.
Isaac Wang: Similar strategy applies, so I put on the simply more simplified model than following years simply a demonstration.
Isaac Wang: The Manila folder model model very easy very simple, this is a can I turn the master them and interact with a standard model for meals simply with the Miss mixing parameter epsilon excellent he want to play by this electromagnetic magnetic current that's typically a long left.
Isaac Wang: can be polite and very weakly interacting with the dark matter with a Center model because the mixing forever so he.
Isaac Wang: So immunity, they can reproduce why i'm you ev salary, but any particles the incoming and outgoing me on a doctrine of them can radiate out a prime photo.
Isaac Wang: image diagram I draw for dollar photo here, but it doesn't mean that they can really afford almost immediately if it's just for possible diagrams so the kid with a simply this spiritual calculation.
Isaac Wang: They finally in different mass range, it became became two different terrifying thing particles, but in the realm of the lightness range say.
Isaac Wang: smaller than 100 maybe like 20 right they slowly became to electron positron pair.
Isaac Wang: Because they're lighter than the two times from your mass so slowly became less than positive here, and here we see we became dark Center is also suppressed or forbidden biomechanically.
Isaac Wang: cinematically canonical variables so they're kind of more be be more heavier Maybe you can also became we all became became too dark sectors, but here we have seen that only because the only because of the outcome possible pairs.
Isaac Wang: So me only experiment look like this.
Isaac Wang: They have 14 models for each model campaigns one target is a fixed targets vironment the greatest target and it's targeted fall I.
Isaac Wang: Three trackers these trackers have very high resolution, so that they can reconstruct the trajectory of the ongoing particles.
Isaac Wang: And after all the 14 models, they have an eco immune system for the particle idea purposes and the moon beam is incoming with the energy of 160 TV and they can get it.
Isaac Wang: Any of the 40 targets for any of the targets can be can be interacting points, and we want comes here and we want can also go out and here's an Alto electron.
Isaac Wang: From the Lord from cloud from the outside of the atom, and this is the last one, and for the dark photo case there is a display word is from the barcode on which, finally, the case into a classroom pairs, and so this is basically collateral the experimental demonstration here.
Isaac Wang: If we have a quick close look so this is the interaction for interaction point the targets and this three years are the following trackers and after some models and give them both year just means there are some still many other models here following that.
Isaac Wang: there's an economy on and we call this the volume will require the dark vote on to decay, whether these the violin so that'd be a product and path through all of the.
Isaac Wang: Following crackers athlete the following through crackers so that we can have get high resolutions.
Isaac Wang: For the final stage depend on what we want him depend on what kind of background we won't we won't reduce.
Isaac Wang: We can require two levels in the final stage it's only the two different products or require require all these four left to enter the international space.
Isaac Wang: Or we can require them to enter the trackers or we can require them to enter the final he car owners that again depends on kind of background we have.
Isaac Wang: So basically this law has distance of 150 millimeters all because the target thickness is this if we allow why Sigma off the target and trapper require Phi Sigma tail.
Isaac Wang: Due to the irs lotion limitation and we don't want some from DK works could be miss return, we can reconstruct the displays burdens, so we are playing the Sigma tail have heated here, so they gave all these designing this way.
Isaac Wang: So basic background, we have two big types of backgrounds, the first time is standard model process with an inherently display products that probably happened.
Isaac Wang: When, for example, tales from a coherent scattering or even elastic museum nuclear mutual the nuclear scattered, so this are erotic process or at the coherence scattering So these are here on the typical a soft or.
Isaac Wang: Very or sometimes very typically, especially in this case, they have a lot of dynamic process in the policies, so they may have a lot of fun as their partners.
Isaac Wang: it's difficult for them to really become a backgrounds, but they're in do some now there are problems probability, although it's very rare.
Isaac Wang: Because they are typically saw so they can't fake and i'm wrong, because in a single process all the final four levels very hard they have very they move co linear with the access and they have very high kinetic energy.
Isaac Wang: And they need us actually require part of it, then you can fake the icon so that means the color of her needs will make a mistake to do, for example, with their tails Karen Thank you the piles and piles may be missed on a CD ends and then for that may be difficult.
Isaac Wang: Second process of the standard model process and property, but miss reconstructing as the displays vertiginous and that's why we have a.
Isaac Wang: Five Sigma tales away from the ranking point, we want to avoid this, for example, typically we have a photons and protons.
Isaac Wang: off show photos they can immediately becomes then from from Paris yeah and this kind of stuff and they can be reduced by requiring a parcel ID if we require all the particles eat with no.
Isaac Wang: He carpenters and the old system so In summary, is kind of eyebrows are very difficult to happen they're very rare so in the following discussion, we simply using the benchmark zero and.
Isaac Wang: Also, according to some private chess with those experimentalists from the morning experiment for us, we want to do more qualitative.
Isaac Wang: searches, we want more more strictly me some very strict and very heavy work of backgrounds simulation like we use employee giant for selection tool is something like that, but for now we simply see in the background is negligible.
Isaac Wang: So in this case we have three strategies we have four different story strategies proposed for these vocalist depend on what kind of background they really get after they do the full simulation process.
Isaac Wang: So the lose one the easiest one only require to observe the to decay products we don't care about the outgoing me on a much more from the point.
Isaac Wang: of view only apply them to enter this retract retract is not interesting color renders medium the medium firstly can require parcel ID for these two particles.
Isaac Wang: We require them being the partners or This is also at medium difficulty we require all the floor left wants to be discovered, but we only require them to enter the factories and the most difficult one, if is that we require all the fallout from enter the final corridors.
Isaac Wang: So, because the kilometers only at the very end, so the Anglo Saxons can be very strict that's why this one is very difficult.
Isaac Wang: Some other costs energy cause larger than five TV, so this is, and this is an entity class made by theorists theorists to simulate to mimic the detect response says what they.
Isaac Wang: said he's going on with said that.
Isaac Wang: If we entered responded and five TV attendees very likely that the particle won't stimulate stimulate any signal inside the factors or the corners, so this is then the cost civil mimic fighting sweating bullets isn't.
Isaac Wang: Quite a serious is not a cut really we want to propose for the beef experiments for them to do after the data after the container, so this is a cause for the detector level.
Isaac Wang: We require the opening angle to be a lot of the one rat so that the resolution is satisfied, it can reconstruct the opening angle, if the angles, are larger than this.
Isaac Wang: Again, if for an furthers require the final color enters the models that are very far away from the characters is there for them it's very difficult for them to.
Isaac Wang: stimulate any signal into colors so we only count the last five models if we require corridors and of course they do magical cause the anger seconds.
Isaac Wang: So basically the results at 90% competence level 740 backgrounds, the roof pod won't like this, so it's basically probes the employee region in this.
Isaac Wang: In this region, though, is, you can see that lose one has a very far region highest one has very tight REACH and a to medium, one of the records that are particles.
Isaac Wang: Right so conclusion.
Isaac Wang: We only use a very good experiment there amy i'm measuring the Iranian contribution to the new elastic scattering.
Isaac Wang: But since we have very high resolution for the tracking for tracking the particle directories, we can compile employ them to observe the displays verdicts.
Isaac Wang: And that can be a good for detecting P, as in physics and we propose very good strategies and to show that it really offers on premise and rich reaching this remnant but, again, we need further detail.
Isaac Wang: For the background estimations for avaya false notion that could be down on the for the experimental it's a very interesting in it Okay, thank you.
Margaret Lutz: Thank you so much Isaac and I think we have time through an interview questions so does anyone.
Margaret Lutz: Have any questions for Isaac.
Margaret Lutz: hey Matthew go ahead.
Matthew Citron: Is it can you go to slide seven.
Matthew Citron: That that's the one yeah thanks, so I was curious about this in volume requirement, so I think I understand the The point is, so that it can go through three different trackers.
Matthew Citron: But could it decay in the in volume region of a future module as well, or does it have to be in the one which is produced.
Isaac Wang: So this is an detection so basically, of course, the particle can DK everywhere right, we also have another possibility decay in decay in the fall away.
Isaac Wang: From following places like they can probably pass through the first tracker and then you can became, for example, you became between the first and then second credit right.
Isaac Wang: So physically this possible to happen.
Isaac Wang: But we just add cause the select the events that bk between the interactive plan for before the first trapper.
Isaac Wang: And in practical as possible, because the experiment to record all of the segmenting the trackers so if we observe some particles that only simulate signals on the following two tractors.
Isaac Wang: We can discard those data even sponsor some searches, because that offers limited resolution to reconstruct the displays versus so basically we can discard that.
Matthew Citron: It.
Matthew Citron: Would you allow it, if it went all the way to the next module and then decayed in the in volume region of the next module.
Isaac Wang: In the current research in finally thought if.
Isaac Wang: We didn't.
Isaac Wang: We didn't we didn't do it yeah yeah so that's also a suggestion by a private chat for those things from those examples, they know was that their best resolution that they can be, and this is they suggest we do this search in this moment.
Matthew Citron: Okay, thank you.
Margaret Lutz: yeah Thank you so much.
Margaret Lutz: As I can, and I think i'm turning over to Matthew or those duties.
Matthew Citron: So I think our next talk will come from Emma on the Methuselah recent developments hi.
Emma Torró Pastor: Can you hear me fine.
Matthew Citron: hey yes.
Emma Torró Pastor: Okay, great so my connection is every week so i'm going to leave my camera off if you don't mind just trying to have this working.
Matthew Citron: Can you see the slides yeah.
Matthew Citron: Do you know we see them full screen.
Emma Torró Pastor: Okay, great.
Emma Torró Pastor: So yeah, this is a.
Emma Torró Pastor: brief status update on the math lab experiment so just I know most of you already know and.
Emma Torró Pastor: This has been presented in this workshops for several years already, but just to remind people what this detector is how it's going to be built.
Emma Torró Pastor: So the idea for these attackers to target, which, along with particles that we covered lifetimes up to the tango synthesis limit so about 10 to the eight meters, really, really young.
Emma Torró Pastor: It will be placed on the surface about about the cms experiment and it will be working for the high luminosity face so because it's.
Emma Torró Pastor: On the surface and there will be about 100 meters of rock within the injection point and the volume will have a very good shielding from from the rock and is.
Emma Torró Pastor: This gives us the confidence that we can have a zero background analysis, at least from anything coming from from the pollution.
Emma Torró Pastor: And the idea of their doctor is that is a very large volume and it will have several simulator layers for tracking they will give you details on this later.
Emma Torró Pastor: And there are two main physics goals for for the experiment, they obviously, the main one is the search for lonely particles and for that we need every good.
Emma Torró Pastor: timing and the tech scene reconstruction, but also because it's such a large continuous detector it's also a very good cosmic cosmic Ray detector.
Emma Torró Pastor: And this is very good, because, even in the very unlucky event we don't find a piece, we still have a guaranteed physically return.
Emma Torró Pastor: So one thing that also many of you already know is that we had a test and build above some the surface of Atlanta in 2010 and we took data during the led working.
Emma Torró Pastor: And with this test we were able to confirm the background hypothesis that we had used for the forum diffuse experience protections that we have some of those law and so that gives a lot of confidence in this in this physics productions that we having in the experiment.
Emma Torró Pastor: So a few words about the layout and here you can see schematics of the buildings are very large building 100 meter size and about 40 meters height of this 20 will be below ground ground, and then we still be.
Emma Torró Pastor: So we have 20 above ground of weeds 10 meters, we still have an active detector material, so, in the end.
Emma Torró Pastor: What OK, so the design is going to be in modules we have eight modules nine meters I am size side.
Emma Torró Pastor: And we so, and this is the structure that each of the modules we have, so we have to as deleted layers on the floor and we'll use this to veto anything charts pepe le perspective are coming from galaxy.
Emma Torró Pastor: And then we have six layers of integrators and top and two additional layers of simulators a bit a bit lower.
Emma Torró Pastor: And so, making this that during modules has the complication that it makes trucking reconstruction, a bit more complicated, but it has a really good advantage that you can assembly, the detector in different status, and also that there is very easy easy easy easy to ski.
Emma Torró Pastor: So the main progress we have done since the last update is in the design of the planes so we're going to use extra the simulator buyers with wavelength shifting fibers which will be connected to silicon plans and in the end.
Emma Torró Pastor: We can do beginning or during some time, we can see that our PCs instead of simulators but in the end, we decided to go with simulators because it has several advantages.
Emma Torró Pastor: And one is that we don't need high quantities to operate them what to do, and it does this makes things a lot easier.
Emma Torró Pastor: And they are also less sensitive to temperature and pressure variations and in the end, we see that we have seen that we can reach the the the required that time resolution with the simulator.
Emma Torró Pastor: So we're going to use until a student pilots, they will be 2.4 meter long and then 3.5 meters wide and one meter one centimeter thick.
Emma Torró Pastor: And the current design and that is, I think, more or less time isn't this so they read out will go in this U shape.
Emma Torró Pastor: were two of the buyers are connected with the same fiber and then this is very nice, because in the end, you have on the silicon peons in one of the one of the sides of the plane.
Emma Torró Pastor: And so, in the silicon part here, in this case, we would have the silicon piano on the electronics and cooling and everything that we might need for for that data taken.
Emma Torró Pastor: But that also has a complication is that in the other side, what we have the bending of the fiber it's going to be a bit more delegate, so we need something to protect them.
Emma Torró Pastor: Which which now has to be updated, not a and and yeah so we've tested several fibers and we we've seen that this is this 40s the meters diameter is the meaning meaning within us.
Emma Torró Pastor: To satisfy the the the five requirements.
Emma Torró Pastor: And yeah so again, we will have measurements image of the of the some of the of the fiber and we can use the time difference between these measurements to get an extra coordinate for construction so for the position every construction.
Emma Torró Pastor: So this is the layout of the find out how they find on.
Emma Torró Pastor: Complete simulator layers are going to look so this would be one of the mothers, that I showed you in the previous slide so we'll have to have such.
Emma Torró Pastor: Units side by side, and then we are planning to mount them so that they overlay they overlap sorry, and so we make sure that there's no crack regions between between this kind of units.
Emma Torró Pastor: and Indian we have for this sub plane and units placing what in need of this simulator planes of the sector, you can see the skeleton of how they will look like.
Emma Torró Pastor: And this will be the six upper layers and then the idea is that we will alternate X and y directions in donating layer so that we can reconstruct at least three space points in this six upper layers.
Emma Torró Pastor: So about this later we are studying there's a facility a thermal APP that can make all these of these expressions.
Emma Torró Pastor: So the fullness of his life is going to require about 700 pounds of simulators and with 10 some calculations and this corresponds to about three years of full production of this facility, which is a lot.
Emma Torró Pastor: And so we've also studied the main features that is extrusions have to to have the so in the end we of course need to separate upwards and downwards going tracks.
Emma Torró Pastor: We also need to be able to reconstruct and low beta particles from neutrino so we can detect them and we also need very good.
Emma Torró Pastor: tracking and the tech scene to review stakes and communicating random can be another X.
Emma Torró Pastor: So we've tagged or we're testing several kinds of extra with simulators and in the end we've seen that the timing resolution of distinct later is competitive with those are of the rpc.
Emma Torró Pastor: So target timing, we were aiming is about one nanosecond along the road and at least 15 photo electrons at the end of the fighter and the social press outcomes.
Emma Torró Pastor: And so, as I said, we tested several.
Emma Torró Pastor: simulators and several other fighters from different vendors have would have found several of them that meet these requirements there's one of an example of one of those tests, where we use five meter fibers, just like the ones that we plan to have in the main detector and.
Emma Torró Pastor: simulator bar up about 2.5 meters and then we use small squares that we varied along the fighter to test the time the time differences between the.
Emma Torró Pastor: signals in the two systems so here, you can see an example on one of the tests, where the measuring little box is in the Center of the of the fiber.
Emma Torró Pastor: So here, you see the measurements from each of the systems and here you see the final resolution.
Emma Torró Pastor: Which is less than what about the have another second, which is much better that number, we were asking us a requirement and this corresponds to about nine centimeters per position resolution which is well within what we were requiring from us.
Emma Torró Pastor: And just to finish.
Emma Torró Pastor: Some update on the idea on having an rpc layer everything on this insulator planes and it is for cosmic rays studies so.
Emma Torró Pastor: As I said, we can use masters law also as a cosmic Ray detector and it can be useful to to study added more details on the is our core structure around vinnie.
Emma Torró Pastor: And we already know by from some simulations that the so only with simulators we would be really good at measuring and giving details about inclined showers so 60 degrees, no more.
Emma Torró Pastor: But when the show was are very vertical, the problem is that simulator are such a very quickly and with with the vertical shower you can expect a very dense number of charged particles and the simulator boot separate so then adding an rpc would help a lot.
Emma Torró Pastor: To be able to measure the charts particle densities in these events we are still working progress and we're studying how much active improvement would be.
Emma Torró Pastor: But we already have some idea on what the rpc layout to be so it would be a 2.2 meter time one meter more or less unit and in each of these unit, we will have like 40 of them I think in each of these will have at strips.
Emma Torró Pastor: 2.2 meter long and 11 million little bit, and then we will have a front than in a boarding image of the end of the rpc with one millimeter it goes up, and we also studying the best option for the superstructure that right now we're considering how many companies about one centimeter.
Emma Torró Pastor: Week.
Emma Torró Pastor: Okay, so that's the main important to bring them in progress, we have a master's law right now there's other working progress that.
Emma Torró Pastor: I didn't need glucose is still not final also simulation in the trigger and that design, but yeah I think.
Emma Torró Pastor: This nice progress in the design of the simulators and fibers and systems is quite is quite Nice and also the idea that.
Emma Torró Pastor: We will be able to do some custom physics both inclined showers and also in particular ones so we're working in DR that we hope to have, at some point in this year and then the idea is to build the prototype of a module and then have the full picture of it for the high community.
Emma Torró Pastor: And that's everything I had yeah we have some population here in case you want to check more details and on the collaboration, thank you.
Matthew Citron: Thank you very much, have a very nice overview, I see there's already a question from Mike.
Michael Albrow: yeah about the idea of having a you and join together to fibers, it seems, maybe false economy here, you lose segmentation it makes complicated analysis and you only save cost of citizens, plus channel which must be much of a small fraction of the cost of the whole project so.
Michael Albrow: seem to be better to have just a civil met each end of a straight fibers instead of doubling up so wonder how what's the economy and having a you are you bend I mean you lose timing you do segmentation.
Emma Torró Pastor: What the timing with said that it's so it already fulfills the requirement we wanted, and like this, I don't think it's so much a matter of economy, but it's a matter of.
Emma Torró Pastor: making things easier to then have all the electronics and everything only one side and not having all these systems through all the layers in the middle of every plane.
Michael Albrow: yeah.
Michael Albrow: Okay, well, obviously it was it was a big discussion point, I guess, but.
Emma Torró Pastor: yeah, we can see her.
Michael Albrow: symptoms matt must be very small compared to the cost of everything yeah this only the simulators are going to be.
Emma Torró Pastor: loads amanda.
Emma Torró Pastor: yeah it's.
Michael Albrow: Not that Ben that band is also potential sources of problems mean you, you said you had to you had to have cover over the.
Michael Albrow: bench yeah.
Michael Albrow: Right that's convocation to anyway all right.
Michael Albrow: I see feminine involved in this.
Emma Torró Pastor: yeah yeah.
Michael Albrow: Okay, thanks.
Matthew Citron: Any other questions.
Matthew Citron: Nothing else I had a very brief one i'm curious what the motivation of the shifting fibers.
Matthew Citron: Be I know for for milliken for it, we have a little harder scope that the measures means going through the detector which just uses centrally two bars of one by one centimeters directly coupled to the symptoms.
Matthew Citron: i'm curious if something like that would work or are you need them for for some of the.
Emma Torró Pastor: To be honest, I can So this was decided a long time ago.
Emma Torró Pastor: I can't remember, by now, but maybe I can second come back to you.
Matthew Citron: Okay, thanks yeah just just curious.
Matthew Citron: Okay.
Matthew Citron: If there are no other questions I think it's good to move to the last speaker of the sessions thanks again Emma and for all the questions.
Matthew Citron: The last speaker is Dean talking about Codex be.
Dean Robinson: Good morning, everyone.
Dean Robinson: i'm able to see my.
Dean Robinson: screen not.
Dean Robinson: complaining.
Dean Robinson: Human unfriendly to me.
Matthew Citron: I only see Dean robeson has started screen sharing but.
Dean Robinson: This is my.
Matthew Citron: This is a problem on my side I don't know what other see.
Dean Robinson: When, let me try.
Dean Robinson: Some reason.
Dean Robinson: anyone have any suggestion.
Matthew Citron: i'll download the slides, and I can protect them, give me one minute.
Dean Robinson: Yes, it was.
Dean Robinson: Very strange.
Dean Robinson: One more time.
Matthew Citron: i'm happy to share.
Dean Robinson: All right, okay.
Dean Robinson: i'll just tell me what to go to the next one, so.
Matthew Citron: Okay.
Dean Robinson: Thanks very much everyone Good morning, or whatever the appropriate greeting is whatever time that you.
Dean Robinson: wish to be in so I want to thank you very much, few minutes, just an update on latest critics development, so you can go to the next slide.
Dean Robinson: So just as a reminder, again, you probably see this is our place before just the general credit, the concept.
Dean Robinson: There are good theory theoretical reasons why it's interesting to think about or 10 or so GB light on the particles that are produced through photos of require high positive energy, for example, the table heavy meat.
Dean Robinson: motivates sheldon displaced on the particle detector the transfer to knowledge scene interaction points i'll even gained coverage.
Dean Robinson: As had a master on terribly cover.
Dean Robinson: from increasing ality experimental from for more for ferment and then because.
Dean Robinson: The idea is to look over the place that detects translate the direction we need.
Dean Robinson: To give you a few short bibliography from the major publications in.
Dean Robinson: There go to the next slide please.
Dean Robinson: So I wanted to talk about two things I briefly the first one is an update on a demonstrator which is called quick beta so go to the next one.
Dean Robinson: So this is a planned to be installed in the same location, as the eventual food detector and the old LCD I will trigger several it's a two by two by two need a cube of the Odyssey triplets arranged just into a access to mind configuration.
Dean Robinson: You go to the next slide and and the main goals will many folks so the the perhaps the primary one that this will run on three and will enable us to.
Dean Robinson: run data driven background simulation to validate our preliminary background relationship can achieve logistical your background, environment and location other important goal.
Dean Robinson: demonstrated the integration of the detective the alleged to be back.
Dean Robinson: To demonstrate the suitability of our piece of the Odyssey technology for tracking and track reconstruction.
Dean Robinson: And I guess relates to this is also to have this this smoke detector won't be fully shoulder will have a large amount of sentimental backgrounds, in particular K longs.
Dean Robinson: To demonstrate the ability to reconstruct those and the the expected efficiencies and to also demonstrated suitability of the mechanics of the mechanical support structure design and scalability to the full detector itself.
Dean Robinson: So on the master achievements for this smoke detector at this point is that the location is you secure the funding to build the rpc chambers is also secured, as all of the actual production.
Dean Robinson: Then you plan mechanical design is completed and everything is in place in the world to integrate with the data acquisition to be.
Dean Robinson: The planets to produce modules in the second half of this year and for dream around three and we have a team.
Dean Robinson: in place to condition to demonstrate and essentially a little timeline on the bottom left there is similar to have something you've seen before, that everything is basically the moves back a year by the pandemic had from any other thing.
Dean Robinson: Okay, so.
Dean Robinson: So there's a lot of progress in this direction we go to the next, the next slide please, and so the second thing I wanted to touch on briefly, something that we call the geometry optimization credit be and I guess I should mention is funded by a.
Dean Robinson: lot of energy of the RD fun, so what this is the go to the next next slide is essentially.
Dean Robinson: Our proof of concept analyses for the conference itself basically just use a simple regular cubic are designed with instead of uniformly faith in the layers all along on the X axis and the hermetic a set of surface ways and each face.
Dean Robinson: That set up and we have demonstrated and can achieve order one vertex reconstruction, efficiency and these limits the heat resolution from the.
Dean Robinson: finer granularity of the tracking stations momentum threshold, since you produce on occasion think that a little bit too soft to reconstruct it alive.
Dean Robinson: So this baseline design used about is about 402 by two meter squared obviously triplet panels and that you can add the lock is around about 40 820 to talk to see.
Dean Robinson: Now this is really one of the main drivers of costs in relation time off of the experiment and we just advance the slide slightly so.
Dean Robinson: The.
Dean Robinson: MAC is advancing slide.
Dean Robinson: yeah so so it raises the asked for example how important it really is to instrument various parts, the detective of others, for example, the front corners in the direction point a couple buttons.
Dean Robinson: And so we can think about a goal of trying to understand where we can rely with replace rpc with simulator while maintaining security and the ventilator bro I will then be mainly to.
Dean Robinson: reject soft background that doesn't necessarily need to be used, facilitate llp takes reconstruction, we need to go to the next slide.
Dean Robinson: So now, the challenge to do this as two different components, one is you have their venue very many LV portal that what you were thinking about my head different detection signatures and Cinematic.
Dean Robinson: So you need to think carefully about how to select the representative at a portal that cover the theory is phenomenal logical space in a meaningful way and then.
Dean Robinson: Having done that what we do is model, the responsive different configurations of the possible detector attendees different theoretical scenarios taking some prior how important they should be weighted against each other.
Dean Robinson: Uniform I mean use a muted unmuted newly developed adaptive simulation framework to do this.
Dean Robinson: So we do is we start with panel is populated in many more places than we would originally considered it, and then we attempt to optimize the configuration i'm juicing much and and.
Dean Robinson: characterized by the relative rotates reconstruction efficiencies we do this, and the requirements are normally that we are fixing the track to send me to hit separation on any given station and the momentum of the track is greater than about 200 million.
Dean Robinson: Okay, so go to the next slide please.
Dean Robinson: So one way to get a sense of whether there is anything to optimize is just use a very naive estimate or optimization and this case from simplest one can possibly think of is just hit white density on each panel I in the forest related object.
Dean Robinson: And then you can simply prioritize them by the ones that are most at least here and then just pull up the relative efficiency versus.
Dean Robinson: versus the baseline as a function of the number of panels, and this is that the cluster you're looking at here is this precise procedure for various different 11 different interesting portals different mass ranges different typical opening angle and and.
Dean Robinson: So one thing worth mentioning is now you've guessed that if you wait by him to essentially end up waiting by panels and statistically close at any given decay vertex.
Dean Robinson: And that's actually good for them to protect reconstruction as well, so you look at some of these.
Dean Robinson: Some of these curves you have a relatively high negative curvature as telling you that most work is being done by.
Dean Robinson: relatively few panels in the configuration she's not a perhaps a surprise, but how negative because they are isn't.
Dean Robinson: Interesting so, for example in the case of the rice is quite state words some being details thanks fox or he can exceed to a picnic scale and whether you have a life will heavy.
Dean Robinson: llp essentially controls that you have this high performance with low number of panels that you'd sort of aggressive the linear expectation that.
Dean Robinson: sensitivity to scale, the number of pounds heavier, but it will model here is that at least one is my ears version, you can nominate legit atrophy coverage by 30% sample to maintain close to the full performance of the original baseline divine.
Dean Robinson: Okay, you cannot go go on for it, and so what other configurations look like so just given you two examples one to 160 panels panels there's obviously a bit of statistical judah incredible attention to the panel.
Dean Robinson: finite and see statistics, but what essentially tells you is that the optimizer through selection.
Dean Robinson: On the regularly space internal plane, which is sort of what the baseline did but telling us that we really need to focus on the back and the downstream of faith, as we add more panels and so on the Left 150 titles, which is around 30% of the total but he'd get up to 80%.
Dean Robinson: Efficiency and the 250 which is normally 50 you are going to get up to 90% reconstruction efficiency.
Dean Robinson: Okay, there we go to the next next line so listen to this a little bit more carefully and more formally using a branch and down optimization technique.
Dean Robinson: which essentially fishes through the the power set of possible configurations in our way and so these plus here, the ball is what happens in the US, a more.
Dean Robinson: Systematic optimized like thing which was denying evil version I just showed you before so you can do a little bit better, but not significantly better.
Dean Robinson: So this is a kind of a nice result to that it tells you the delay estimator actually does, as well as something that's far more sophisticated, so the The lesson stands up reasonably well so just to summarize.
Dean Robinson: gets me, we are should be out of time, is that you can maintain I said a sea of the sensitivity of faces I really want to find both of them as possible scenarios, but reducing the amount of often see the related by an order one factor is going to save a lot of time.
Dean Robinson: This method that we use in early adapters and I can tell, are not only what sort of configuration right one thing also is an interesting order the or the best ones actually store the detector silicon started a sensitivity, even before proceeding fully installed.
Dean Robinson: adaptive frame of reference to change the.
Dean Robinson: example I have constraints in the space to change or variation.
Dean Robinson: So I should thank you and I should mention that up for updates and all day long where i'll handle I put it experiments I think even Twitter and various other places that actually, I can tell it there, so thanks very much.
Matthew Citron: Thank you very much, any questions i'm sharing so.
Matthew Citron: Because he can you answer is.
Matthew Citron: I think there's one so let's go over this question.
Margaret Lutz: Yes, I actually have I don't know, maybe a very basic question about the production so you're saying that there are pieces of production.
Margaret Lutz: This year and then installation essentially next year um what is.
Dean Robinson: For the for the for the demonstrated the technical that's right.
Margaret Lutz: yeah so everything's being produced at CERN or do you have to, I do have plans for how to move them.
Dean Robinson: So this is better answered by one of the people who are heavily involved in that, but essentially it's the produced by the Atlas.
Dean Robinson: PC production line.
Dean Robinson: So I think it's.
Dean Robinson: gotta have the people that are responsible for this.
Xabier Cid Vidal: So, so the APP this is themselves sorry to interrupt.
Xabier Cid Vidal: deputies themselves have been produced by some Italian company, we will then ship them to serve.
Xabier Cid Vidal: For us Lynn was saying them that atlas middle a great team will assemble them I know it well, and then.
Xabier Cid Vidal: The.
Xabier Cid Vidal: mechanical part is when producing snappy and then we all will be moved to sound.
Xabier Cid Vidal: To.
Xabier Cid Vidal: be the final sample over there.
Xabier Cid Vidal: i'm not sure if that answered your question.
Margaret Lutz: More or less as a subject curious about how you're arranging everything having experienced some fan of shipping detectors recently.
Xabier Cid Vidal: Did that they're having a lot of delays, maybe that's what you're suffering as well, so we also software delays.
Matthew Citron: Okay.
Matthew Citron: Any other questions.
Matthew Citron: If not, thanks again to Dean, and to all the speakers.
Matthew Citron: Of the session I think we'll break know for.
Matthew Citron: Sure period so sherry can see.
Matthew Citron: Okay.
Matthew Citron: So I think come back in 10 minutes, so at.
Matthew Citron: 618.
Matthew Citron: let's do 620.
Margaret Lutz: You need to say you're.
Matthew Citron: Sorry.
Matthew Citron: My gang the times, or is it 520 i'm so sorry.
Matthew Citron: I converted wrong.
Matthew Citron: 520 certain time sorry too early here and too difficult to do my head my bad so in in 10 minutes at 520 17.