STFC-RAL-CR03: Sir, and gloves.
STFC-RAL-CR03: Wait a second for that. Okay, yeah. So
STFC-RAL-CR03: we should probably report 45
STFC-RAL-CR03: solenoid magnet. So our inner detector is the current one upgrade the Itk. But for now we have is a pixel detector silicon microstrips which we bring to Sct. And a transition radiation tracker which is gas based on. But we and we don't build tracks.
STFC-RAL-CR03: Starting from now, we start with 2 silicon detectors and the pixel system is, as you can see here, made of the ibl, which was added later. But it's logical part of the pixel detector
STFC-RAL-CR03: so importantly within Atlas. We do not have a level. One track trigger we have to wait for the level. One system to which is based on calorimeter and neon system information generate and accept. And once we do that, we read out the whole detector, and then the high level trigger which is based on software is able to process the inner detector data. And that's where we do all of our tracking. So this here is a diagram of the current
STFC-RAL-CR03: system as deployed in phase one. So the phase, one upgrade. So this is what's running in run 3. So you can see here that we receive color, emitter, information, and neon information into the level one hardware. We have a Ctp which generates a decision based on that. And then we send information about where a level one system saw objects of interest to the high level trigger as well as obviously the does the readout from the detector which comes to Hrt
STFC-RAL-CR03: here. So our Hrt, obviously, in addition to doing all the tracking is obviously where we do more complicated decisions about what we've seen in this sector beyond what we can do with the hardware.
STFC-RAL-CR03: So for Atlas the current limit is 100 kilohertz of one accepts, and then the output rate from H. Lt is obviously support software. And so that's more limited by the bandwidth of the system. So we've currently got a maximum of 8 GB. Second, and go to disk
STFC-RAL-CR03: and so we have a nominal Hrt output rate and run about 3 kilohertz, and this tracking that we do all the tracking we do at the Hrt is a separate implementation from what we do. Offline
STFC-RAL-CR03: and it. But it's still very much CPU intensity, and it requires a lot of work to choose what we do to track non and the regions. We do it in the parameters and sort of the rates at which we do that, because there's obviously a finite amount of CPU resources and tracking is a very significant proportion of those.
STFC-RAL-CR03: So in terms of how we do track reconstruction in Atlas, we have a a multi-step process. So we do see formation, which is so we use triplets to take 3 silicon hits from either pixel system or the Sct. System, not a mix of the 2,
STFC-RAL-CR03: and we form these into a triplet based on how compatible they are. And so once we've got this triplet. We do some cuts on these seeds to kind of reduce the number we've actually got.
STFC-RAL-CR03: and once we we can optionally sort them via quality criteria. And then we do track followers where we do a combinatorial callman filter to actually extend this through the rest of the silicon detector. And it's also possible to an additional step. Extend the track into the transition radiation tracker. But that doesn't really play a part in our standard. Lrt,
STFC-RAL-CR03: so obviously this in the standard cases, optimize front passport, which is most of what we have at the Lhc certainly with an Atlas but obviously you get more efficiency for anything which starts built through the whole detector. But if you've got a track that doesn't start near the beam spot, you don't get it, you wouldn't necessarily find it.
STFC-RAL-CR03: So this brings us onto large radius tracking. So this is an additional passive tracking which we do, which has been specifically designed and optimized to reconstruct these displaced tracks. And this is mostly achieved by relaxing various cooked example on the
STFC-RAL-CR03: that's called the D 0 or transverse impact preferences thus far. How far out you are in the detector in terms of radius? So until recently, what we had for Lrt was very, very expensive
STFC-RAL-CR03: to run, so it was only run off line, and even then it was expensive enough that it had. You had a special preselected filter that would pick some events would be processed, others would not get it. So that severely limits your sensitivity.
STFC-RAL-CR03: In an analysis which is going to rely on this because you get a much. You get a much more limited set of statistics.
STFC-RAL-CR03: But recently with with by re optimizing the cuts and the bit of software changes we've been able to achieve a situation. How well we can run large radius tracking offline on every event that Alice records. So this you can see here the performance of this in red is our primary offline tracking, and then in blue is the Lrt. And then you can see in black the combination. So you can see now.
STFC-RAL-CR03: previously, sort of out at 200 say, you've got less than 20% efficiency. And now we're able to get sort of 40 50 tracking efficiency for any tracks out here.
STFC-RAL-CR03: Obviously, that is all offline. Now, as part of the upgrades for the trigger for run 3, we've also been able to actually improve the performance of fast track finder, which is the tracking software. We use specific trigger and as well as that with with these changes to how Lrt is find we've been able to actually bring Lrt. To the trigger.
STFC-RAL-CR03: So unlike standard tracking, the Lrt. Only forms its seeds in these Sct. Detect. We don't do seeding in the pixels. We've increased the maximum value of the cut on the transverse impact parameter to 300 millimetres and Z. 0 to 500 so this is obviously 300 is the first layer of the Sct.
STFC-RAL-CR03: And we also require, because we require at least 8 silicon hits on each track. And you've got 8 layers from 300 outwards. There's no point increasing that because
STFC-RAL-CR03: you you cannot reconstruct the track successfully, using Lrt and then, so additionally, this trigger Lrt can optionally take an input of the tracks that have already been found by the standard tracking and remove all of their clusters from consideration, which increases the performance. Because you do just don't have to built seats or tracks
STFC-RAL-CR03: from those, because you've already got the track.
STFC-RAL-CR03: So in terms of the expected performance of this I'll just check that. Yeah. So this shows the expected performance for a full scan. This is where we look to the whole detector of 3 solid, full, solid angle pretty much, and got the end. But
STFC-RAL-CR03: get some stairs and that sort of thing. But the important thing here is we just looked at all the particles coming from that decay. So you can see in 3. That's what we could do with the standard Hf tracking. And so you can pretty pretty quickly see that we drop off the efficiency. And by, you know, 20 we've got less than
STFC-RAL-CR03: 20% efficiency. And by 50 we basically not got anything at all. Anything blue. The Lrt gives us nearly 60% at 50 and it's pretty much dropped off, even out to the 300 we've still got about 40% expect efficiency
STFC-RAL-CR03: for this signal sampling. And importantly, here. Just to kind of clarify as well that we've chosen to require that all the tracks must have a d. 0, at least 2 just to cut out the obviously get a lot of prompt tracks and fake, and so on. So we just cut out the prompt stuff eggs were interested in that. This is a displaced object.
STFC-RAL-CR03: So here, what we've done is we've looked at efficiency with respect to the offline tracking and we've required a truth match for those offline tracks to umistic products.
STFC-RAL-CR03: And you can see as well that the reason we get such a low performance at low d. 0. For the Lrt. Is not just because it's too real cut. It's also because we
STFC-RAL-CR03: and full scan it's always been as a second pass. So we've removed all prompt clusters already from the tracking. Just 2, for performance reasons. And then also, in addition to the full scan. We've also got an implementation where you can. Actually, you can run the live radius tracking in an roi.
STFC-RAL-CR03: So this is being used to build triggers for electrons, and you want to displace so you can see here the performance of them. So here on the left is the electron. So this is requiring these 0 at least 5 on the track.
STFC-RAL-CR03: and again the its offline tracks uses the denominator, which have been truth matched
STFC-RAL-CR03: to a soft line standard and Llc. As combined. So
STFC-RAL-CR03: and it's been truth match from so 100 Gb. Style was a lifetime of one nanosecond. You can see here we get about 80 to 60% efficiency.
STFC-RAL-CR03: And this is for a style playing all the way out.
STFC-RAL-CR03: 300 and you see, on the right is so nuance with the
STFC-RAL-CR03: requiring 2 millimetre cut here. But you can only see that there's also the sort of standard tracking Pt. Cuts about 24 Gv, also being imposed.
STFC-RAL-CR03: So yeah, so you can see we we expect pretty good efficiency now for the tracking. So then, in run to last year. In late in 2022 we were able to collect some enhanced buyers, events
STFC-RAL-CR03: and reprocess these
STFC-RAL-CR03: offline because trigger is still very, very expensive. So we don't actually run it online because we just have CPU for it. But we've been able to set up with. So we were able to use it in our spice, and essentially has no triggering applied to it. So just take well, just take random date with essentially a low rate, and we're able to
STFC-RAL-CR03: run the rerun the trigger and obtain what the Lrt. Would have produced. And all we've done is match these Lrt tracks to
STFC-RAL-CR03: offline tracks which are associated with vertex as a way of obtaining an efficiency measurement. For online tracking. See here the different layers of the detector. So as we lose progressively more and more layers. Silicon obviously does good a job with track reconstruction. We can see even here. We're out to 300 we've got about 6 cents efficiency. So this kind of shows that large is tracking now is solid performance we expected.
STFC-RAL-CR03: And then this is also a look at the. So these are the
STFC-RAL-CR03: Lepton Llrt. Chains. So you can see here in black is the data efficiency. So this is comparing to off line tracks for its denominator, and then in the shaded regions. This shows some Monte Carlo samples.
STFC-RAL-CR03: so you can see you. We're getting sort of efficiencies you would expect if we had the background, and in green is what you would the sort of efficiencies you would expect if you would see some sort of slack trial or something on over here
STFC-RAL-CR03: Monte Carlo. Expectation
STFC-RAL-CR03: so in terms of timing for this
STFC-RAL-CR03: we have. You see here that I've shown in blue is the large radius tracking, and then in green is for the standard tracking, and these both being normalized to the mean of the standard tracking so you can see easily enough. So basically, here is the Lrt full scan is quite a lot more expensive
STFC-RAL-CR03: should be standard equivalent of it. So it's combinatorial tracking. So the more seas you have, the time goes up quite dramatically for that.
STFC-RAL-CR03: We do see a gap in the foreman sense.
STFC-RAL-CR03: So, moving on to some stuff I've worked on. So this is the displaced jet trigger
STFC-RAL-CR03: which makes use of large radius tracking. So part of the challenge in Atlas is that for some decays like this, where you've got a Higgs portal it came to too long with scalars, and you've if you produce your Higgs through fusion. You obviously you you haven't got a laptop or anything to trigger on. So all you can really. And these tend to decay to jets. So all you've really got left is this radiation jet over here? But that jet is
STFC-RAL-CR03: relatively soft. You can see here.
STFC-RAL-CR03: this is the spectrum deleting jet. Pt, for such a sample. And you see here, the peak is all the way down to 50 Gev. And our the Atlas trigger threshold for a single jet is 420 gev.
STFC-RAL-CR03: So we would have a factor of nearly factor. 3,000 sorry difference in the yield area to do that. So what we've been at, what and you can't just bring your jet special down to 108 gv, because that just blows up the rate jet. So what you have to do instead is add additional selection.
STFC-RAL-CR03: and you haven't got because you haven't got a leptin or anything to figure on. So what you have to figure on instead is these additional displaced jets. So we identified displaced jets, using Lrt, and then so by combining this Lrt with
STFC-RAL-CR03: single jet special single jet trigger, you're able to get a nice low rate of these. So what we do is we use new. We use the new Lrt out before. So this is all new, from 3 to reconstruct this place. Tracks
STFC-RAL-CR03: from these jets. And we we have to choose. Obviously, this is still we can't just from full scan. So we have to choose Roi. So what we do is we? Look, we use the false, we do. We do use full scan tracking, which is part of why we have a single jet requirement. So this single jet is in that threshold, chosen to line up with all the triggers that are still using full scan tracking? So we do. Is we? We choose these jets we scan.
STFC-RAL-CR03: We care how many prompt tracks we get in each jet. And then, once we've got the idea, for you know which jets are actually candidates for our trigger. We rank them by pt.
STFC-RAL-CR03: in order to, and then we choose top 3 by pt, and then we run Lrt in the just inside those jets. And then we can count the space tracks. We've got them there, and if they meet the requirements we can then pick. So let's say we've got the multiplicity of those jets. We can then say that we've actually got the right. So
STFC-RAL-CR03: I hope display steps
STFC-RAL-CR03: identification. And we get a trigger. So in terms of how it could do this. So we classify our tracks using the transverse impact parameter. So if you have a these are less than 3 so your front track, and we also require that you'd be associated the primary vertex. That's what this cut does
STFC-RAL-CR03: And then, if you, it's a displaced track, should be at least 3 away from the impact of them. Spot it's got to have a significance on the d. 0, which is essentially Dv. 0, divided by the hour that we simply got in our estimate of it at least 10 so once you've done that, what we do is we?
STFC-RAL-CR03: We also did that for classify our tracks, and then for how it cuts by jets. So we do a ranking where we check that. So we take this to top 3 by bt, not the CPU, and you could go to like fifth jacks, but by capturing about 3 jets. That's sufficient for the trigger
STFC-RAL-CR03: require each of these just for the pt. Of at least 50 Gv. And then we have. You can see here, I all, and we have. You can see there's 3 different labels there, and these are the different requirements. So we have a one prompt. Jet trigger! One prompt track, Max.
STFC-RAL-CR03: Version of this as a one that requires 3 displaced tracks and 2 prompt, and then this one is different. So it's it requires exactly a single jet. And it's not just a case of having one jet. It's that you must only have one jet and if you've got 2 jets, you're supposed to pass the 2 jet trigger.
STFC-RAL-CR03: So it vetoes anything that has
STFC-RAL-CR03: 2 jets or more innates. Essentially, I mean obviously passing this Pt. Thread on 140, and the prompt track
STFC-RAL-CR03: cotton wand. So it applies the first stage checks and then
STFC-RAL-CR03: checks. How many jets are left. If it's got 2, then it says, Well, it should really be a. It should pass to jet requirement, and this is just to recover some efficiency. So we require these. And then we also have this on classified tracking. So if you have a jet where we reject. So, for example, if you've got obviously the binary. But here you've got these different requirements. So if you have, for example, a prompt track, but it's a long way from Z. 0. If the jet is full of days, we I the trigger, will sort of say, well, we probably just make magnificent.
STFC-RAL-CR03: Miss measured what we've got in that jet. So we don't want to trigger on it. We get jet
STFC-RAL-CR03: because we don't really believe what we've got. So the design of this results in you have 3 different chains within the menu, so the first one required is just the sort of most straightforward 2 jets. Passing this 3 P. Cut. Then we have another one which requires one jet to pass that, and the other one to pass the one prompt chain. So that's because only got sort of 40% efficiency. So we want to. We don't want to be too strict from requiring to 3,
STFC-RAL-CR03: because that gets quite tricky. But efficiency quite quickly for some cases, and we have this third one where we actually require a jet with 140 Gv. Patter exclusively cost. And so in terms of what we expect for the performance. You can see here as a function of the offline. Get Pt. What we sort of expect. So you can see here in in blue is combined. This is the or 2
STFC-RAL-CR03: single, or the digit trigger.
STFC-RAL-CR03: and then in red is the diget trigger, and then in green is the single jet trigger. So you can see here that we expect performance of about 60% for sort of a 200 Ev, leading jets.
STFC-RAL-CR03: and this will come, and obviously you can get larger here. But certainly, and as if you recall from
STFC-RAL-CR03: But yeah, here the the lower Pt. More interesting for us in terms of yield. So you can see here that we get about 40 here. And this is lower limit is set really by what we can do into the full scam tracking netless
STFC-RAL-CR03: for pt.
STFC-RAL-CR03: so to summarize this. So yeah. So the run 3 with significantly trigger to introduce this whole new suite of triggers based on our radius tracking and this obviously significantly increases the sensitivity to it displayed also gives you increased Higgs.
STFC-RAL-CR03: and these will be in future.
STFC-RAL-CR03: Thank you.
STFC-RAL-CR03: What?
STFC-RAL-CR03: Okay? Thanks. Very good. Other questions
STFC-RAL-CR03: you could do but
STFC-RAL-CR03: to do extension when it does run
STFC-RAL-CR03: that we don't. Yeah.
STFC-RAL-CR03: I mean, even if you build something new.
STFC-RAL-CR03: Sct would say, 3 hits. That's quite a lot of possible tracks from 3. You would need probably more. You would probably want realistic to build an Sct track with more if something
STFC-RAL-CR03: 3. So some width.
STFC-RAL-CR03: At this point there are some triggers that do look in. They do look at TITH. Specifically and use it. I think there's there are some triggers we have that do look at some.
STFC-RAL-CR03: But the charge that's been positive in the Drt. For look at highly ionizing particles. But that's not really tracking it up with this more significant.
STFC-RAL-CR03: that
STFC-RAL-CR03: you! You talk about expense in time. Yes, of doing this. So how do all the things compare? And if you did everything
STFC-RAL-CR03: tracking
STFC-RAL-CR03: didn't do a two-stage.
STFC-RAL-CR03: So if you did, rebuilding all
STFC-RAL-CR03: the prompt tracks which is already a full scan that's already on the order of 600 ms to do some good.
STFC-RAL-CR03: Perhaps these and it would be like, I mean, this is but easily be pushing the same. or else
STFC-RAL-CR03: I don't think we want to even try that
STFC-RAL-CR03: urban practice.
STFC-RAL-CR03: So when in your 2 stage process, yeah, how long does are you talking about the 2 staging the sense of just Lrt or to safety might trigger.
STFC-RAL-CR03: There's a distinction. I was talking about the track. Just the track. Read, oh, yeah, the track radio description. Yeah.
STFC-RAL-CR03: so in your procedure, and then take those out. You do the left. So
STFC-RAL-CR03: and I mean for the actual, if you do it in an so, which is what we use into this place
STFC-RAL-CR03: in terms of variety.
STFC-RAL-CR03: But this I'm gonna impress.
STFC-RAL-CR03: It's not. It's not excessively expensive. And part of the reason for choosing just 3. Yes, so that we we can. I have a nice band on the
STFC-RAL-CR03: citizen I spend. I'll ban all this.
STFC-RAL-CR03: probably gone back, you know, potentially unbounded in some scenarios, and can you different question on your next slide.
STFC-RAL-CR03: get into the cyclism.
STFC-RAL-CR03: we'll see that one.
STFC-RAL-CR03: no. Page 10, sorry.
STFC-RAL-CR03: Yeah. So the the left hand plot.
STFC-RAL-CR03: Yeah, you've got. You've got a sort of
STFC-RAL-CR03: transitions around 100. Yep. And so you get 80%. And then it suddenly drops to 60%. So once, yeah, so that's probably you can just see here around 100 that we've got going from the pixel. We're going through a pixel there.
STFC-RAL-CR03: So you you are. So okay, so so. But yeah, there there are. You've lost all the pixel. Well, no, no, there is one more pixel I left, and that was Pixel Pixel. It's going from Pixel one to Pixel, 2
STFC-RAL-CR03: in that transition. So as you basically, as you go out along these, this, the radius you start to lose, and once we lose enough layers of the detector, we're going to start suffering forms, because even though we do seeding, it's step function. Yeah, it's not. Gradually you go through the layer and then you lose you. You've lost all of those hips.
STFC-RAL-CR03: So obviously, this is, the tracks have been built back. So you build track from the Sc team. If you see the case on our team and you build it back into Pixel.
STFC-RAL-CR03: But if the track didn't, every you know the track originates outside entirely when it tries to go through the pixel system. It's not going to find anything
STFC-RAL-CR03: so. But in that scenario, I mean well.
STFC-RAL-CR03: it doesn't want to actually do an initial estimate of the parameters, but it should. The point is that once you lose a layer of the detector it becomes progressively less likely.
STFC-RAL-CR03: The the step is more or less with yeah.
STFC-RAL-CR03: it's not not really your business. But do you understand why the electrons and neural not particularly well. But I would have said that I mean some of this is going to be a function of how we do electrons. These are actually full chains, not just the tracking. Well, this is no. So these are track containers. So
STFC-RAL-CR03: it's probably just a phone
STFC-RAL-CR03: signature as an electron.
STFC-RAL-CR03: So maybe it's accepting neurons that don't have minute detector extension.
STFC-RAL-CR03: no, no, these are. These are in the detector tracks that we're looking at.
STFC-RAL-CR03: But I mean, I don't know. I don't want to give a sort of TV glance.
STFC-RAL-CR03: Yeah, I mean, some of it's gonna be material.
the
STFC-RAL-CR03: to. So if this is, this is just
STFC-RAL-CR03: just so they can. Curious is the difference between them.
STFC-RAL-CR03: There is also A. There is also a Pt. Difference here, and while looking at different p. 0 as well.
STFC-RAL-CR03: I can see that this one's 26 g. This one's 24, and you're requiring at least 2 mill over here and 5 on the left phones.
STFC-RAL-CR03: So you are seeing difference. You've got different costs being imposed here. Tracks.
William Buttinger - STFC UKRI: Can you hear me?
William Buttinger - STFC UKRI: Yeah, great. II have the question on this slide. Ex. Exactly. I mean, if I understood it correctly, the denominator is is the tracks which will be matched at at Rico level with the full offline. Standard. And so why, why, I was curious to understand, as you say, why, why, there is that drop in efficiency between 100, 150, which would imply that the efficiency hlt is more affected. By whatever's this transition is a a physically in the 200 sector compared to the offline tracking.
William Buttinger - STFC UKRI: So? And and my general question would have been. Yes, W. What is the the the types of tracks that you're missing? So this sort of 20 to 30 which your of inefficiency you have. How would you characterize those tracks like? What is it that is the deficiency of your Hl. Large radius tracking compared to offline?
STFC-RAL-CR03: That's a good question. So I think it would. I mean, so the the offline is known to be more efficient than optimize speed. So we don't do some of the things we do offline. So offline, as you know, track keep tracking, and then track backwards, and there's more steps. Also. The offline will take as a more, you know, E, the offline uses a more complex mechanism.
STFC-RAL-CR03: reconstruct its tracks compared to the Hrt, so I mean, that's why we lose them. I mean, I don't know exactly why we've I don't think we've done a lot of work to characterize what is different about the Hrt tracks. That means we can't we we what's different about the offline tracks that we do reconstruct versus those that we don't. It just tends to be. I mean, you can see here, it's it's not like, it's all grouped into one.
STFC-RAL-CR03: So there's there's nothing particular about. It's just tends to be that we just less efficient.
William Buttinger - STFC UKRI: yeah, I appreciate you trying to do do something which is a ultimately a simpler, faster
William Buttinger - STFC UKRI: algorithm, because you're more constrained time. Wise. Yeah, it would just be interesting to understand. If it's one particular feature, one particular cut that is the the one that is responsible for most of the inefficiency. But it's a cut that you can't relax, because if you do, then the
William Buttinger - STFC UKRI: algorithmic computation time blows up so that would be really interesting to UN, understand. But but don't worry if you don't. If you did look at it, and I just wanna say as well, II really enjoyed your talk. It was. It was very nice. Thank you.
STFC-RAL-CR03: Sorry. That's making me think of something else.
STFC-RAL-CR03: Just standard tracking algorithms just different. So we get the same sort of system. Yes, there's there's all the material stuff, in fact, that's physical differences, that so
STFC-RAL-CR03: it becomes different. But
STFC-RAL-CR03: yeah, this is, I mean, obviously, these are in our lives. And these are eyes are wider than some roi as well. But still it's
STFC-RAL-CR03: you, opt you are obviously you, you we are. We will accept a track.
So much?
STFC-RAL-CR03: Are there any other questions on Zoom
STFC-RAL-CR03: or in the room
STFC-RAL-CR03: in the weird corners of next can trigger land?
STFC-RAL-CR03: One of the things we were wondering if there's had any legs was if we did the machine learning the anomaly detection in the hardware trigger.
STFC-RAL-CR03: So essentially, we accept anything that doesn't look like, it's nothing. But then you
STFC-RAL-CR03: you are too.
STFC-RAL-CR03: Yeah, we have 200. I mean, these are the 2.
STFC-RAL-CR03: What you see is rubbish. So even in that price rubbish properly, and anything. It's not rubbish is then interesting. But then it means you've got you got things where you have no seed. How problematic is that
STFC-RAL-CR03: when you say No, see no, nothing at all. Just look for something that doesn't like it.
STFC-RAL-CR03: Oh, I see. Yeah. So we don't actually know. So in terms of the so in terms, I mean, obviously for the laptop, these laptop figures. That's probably that's bad news, because coming in for where they should start looking, but in terms of my trigger it really depends. So at the moment it runs off level, one jet triggers.
STFC-RAL-CR03: In theory it would find my clicker to stop, because I mean they looked at the jets. They're in the penalty jet container. We don't.
STFC-RAL-CR03: So we must only look at what the level one system found certainly, for like this place gets. That's just I mean, those certainly would not be coming, for those are just yes, there's no particular demand for them to have had any level. One
STFC-RAL-CR03: property that I'm aware of. I don't want to promise. There might be something funny in the jet code. But the the also should be reconstructed. So yes, you could if you had such a trigger. There's no reason, as long as you reconstruct as long as the hilt
STFC-RAL-CR03: or event filter, I guess, would reconstruct
STFC-RAL-CR03: the jets and give me those objects. I don't really mind if level one had any opinion about what I'm looking at.
STFC-RAL-CR03: So yeah, if that would be fine
STFC-RAL-CR03: type of the dominant.
STFC-RAL-CR03: Well, no, it's not no track in this case. I mean. So for these objects, these do have tracks. Just they start a lot, those around. Yeah, when I said, let out, level one, because, yeah, track, yeah, yeah, not yet. Yes.
STFC-RAL-CR03: whatever whatever.
STFC-RAL-CR03: I don't think these events would look all that weird for calorimeter, because I mean these. These are just ultimately turning to be. Guess. Yeah. But all events with anything in it are weird compared to nothing. Yeah. But yeah, that's essentially yeah. So yeah. So now, I met Trigger, we're just saying this isn't.
STFC-RAL-CR03: There is nothing we're not distinguishing between anything that's not nothing
STFC-RAL-CR03: fair to say. Yeah. So I noticed it's it's how much that has led to picking off.
STFC-RAL-CR03: Yeah, we'll see why I see how it runs next year.
STFC-RAL-CR03: Well, this year. Yeah.
STFC-RAL-CR03: do. I mean, we'll have something. We'll have some thing. I mean it. It's like this, isn't I? This this trigger isn't a full sun line trigger. That's we're actually kind of borrowing some pre selection.
STFC-RAL-CR03: you know, if you wanted to stand alone. That's why you're full thing. That's what the motivation of this figure is. There isn't the J. 180. That's here.
STFC-RAL-CR03: You don't get that.
STFC-RAL-CR03: I mean with the new phase, one upgrades that one. Hello, system. We've got chopper turn on now so
STFC-RAL-CR03: that might help ultimately, things fast tracking.
STFC-RAL-CR03: Do you have it? So there's that stuff going in there so that we've got a check threshold that is
STFC-RAL-CR03: not crazy. That's it.
STFC-RAL-CR03: We'll be reaching out.
STFC-RAL-CR03: Hey? Sounds like any other further discussion, probably over lunch. So that's it. Thank Benjamin again
STFC-RAL-CR03: rather than before.