12:01:22 Hello.
12:01:23 I.
12:03:39 Let's give it another minute see who else shows up.
12:03:46 Sounds good.
12:04:17 Also I just got some changes to the dark light proposal so I'm editing notes at the same time.
12:05:27 Okay. Where's everyone else.
12:05:31 I know Jaan is dealing with some amber meeting, that's running over due to daylight savings time in the US and not in Europe. Okay. What meeting, Amber.
12:05:44 Yeah, compass plus plus Amber. Oh, okay.
12:05:50 I don't know what it's about. It's a I guess it's not a collaboration board meeting. Yeah.
12:06:09 again, do you know if axles protocol end today or, I don't know if he's gonna call him today, there's a kind of conference running, most of this week on some nuclear stuff that he gave a talk in about 30 minutes ago so he might still be okay.
12:06:26 Okay, yeah, no, there's I think now that people were realizing that we can have these meetings anytime we want, there's been an explosion of meetings and
12:06:42 I know we often end up.
12:06:48 Multitasking Sitting in two or three meetings at once.
12:06:54 Anyway.
12:06:56 Something tells me that that behavior is not going to change once coven ends. No, no, we will continue doing this. Yeah, it's just too easy.
12:07:10 Okay, well, what is it, it's, yeah we're seven minutes after the hour.
12:07:17 I don't have anything new to report but I've been busy writing
12:07:24 the dark light proposal together with Leon and Richard and Ross and Richard and I are also working on our three year grant request, so done almost nothing.
12:07:43 Do any of you have anything you want to raise.
12:07:50 I don't have anything in particular, other than I know that the APS is coming up.
12:07:57 And I got a reminder email that we're supposed to upload slides and stuff ahead of time it's in two weeks I think is the deadline. So I think maybe next week we should have drafts of our talks, where the week after and maybe we can rehearse them here.
12:08:12 Yeah. Oh, that sounds good.
12:08:15 I know I'm giving a talk on tape decks.
12:08:20 Patrick, you're talking on DVDs yes yeah I'm doing class 12 So, not, not yet. Okay. Is anyone doing, I think you have again is doing a TX talk at the GHP.
12:08:37 Yes, it's right before I'm doing the Muse talk at the GHP. Okay, so we should probably well you again should you know rehearse here I'm giving a TEDx talk.
12:08:44 One of the APS 10 minute ones so that's easy enough. Yeah, I think everyone's also giving a APS talk on the target, but he's giving a broader talk at the gap Yeah, HP Kiki and I flipped a coin to see who would talk about what at the GHP and I got Muse
12:09:07 and he did TX and we're both doing TX on APS. Okay. Yeah.
12:09:13 so I'll send out a reminder and suggest that,
12:09:18 Let's see what's.
12:09:28 from today,
12:09:31 or no sorry that's DPS.
12:09:34 Sorry. Dis is in three weeks from today APS starts at the end of that week is the GHP before or after yeah I guess the GHP is concurrent with the is I have it in my calendars April 13 to the 16th.
12:09:55 Okay.
12:09:56 Ok. So, either we do it next week or the week after it doesn't matter to me any preferences.
12:10:06 Contract Eva.
12:10:07 I'm easy either way. And we also have the regular TX meeting where we can rehearse. Yeah, that's true. Yeah, why don't we do it at the TX meeting.
12:10:20 And we have one this week. And then, again, just before the APS meetings.
12:10:30 And then that gives everyone an opportunity to to complain and so so Ethan I got that email about uploading slides and I thought that it was optional for us.
12:10:43 So it says, uploading files is required for poster and on demand presenters that optional for live presenters.
12:10:50 So I thought that meant, like it was optional for us to do. Yeah, I think it is.
12:10:56 It's a convenient deadline to have though to make sure things are done on time. I'm also, you know, biased towards having things posted online, just so that other people can, in the future, people can come back and look at what you presented.
12:11:14 So I generally when I'm given the option, I try and always do that. Yeah.
12:11:20 But of course that's not saying everyone else has to. Oh, yeah. when is the deadline.
12:11:27 April 7.
12:11:29 Okay, so we should do it during the the Monday, April five meeting. Yeah, yeah. they keep back to meeting on the eighth is after the fact. So let's let's do it on the fifth of April.
12:11:45 Okay.
12:11:47 I'll send out an announcement to that effect to remind those people that are giving presentations to,
12:11:57 to, to be ready for Monday.
12:12:03 Okay. Anything to report. Other than that, you got, oh sorry.
12:12:11 I know we got the, we got the channel for compiled for the most part off and running. So in our learning how to write programs for it to interpret data and whatnot simulations.
12:12:22 Okay, great.
12:12:24 Yes, that's my progress. Okay, that's good. Um, yeah I know that at the moment we've still got both ways of writing out the data.
12:12:37 There's the simplistic way that I do to write out, and then tackle, and then I analyze the trouble with route, or. I've got a routine that converts the route.
12:12:48 The End taco into a root file.
12:12:52 Whereas Ethan wrote us section that uses the analysis manager and JSON for to write a route file directly.
12:13:04 So.
12:13:09 Either one works, though I was going to do something with that I was, I was going to add something to the root file.
12:13:21 Oh yeah I added epsilon in the kinematics.
12:13:26 Just so you didn't have to calculate it each time.
12:13:29 And it's in the end trouble but not in the analysis manager of but that's a detail at some point I'll do that.
12:13:42 Okay. Um, yeah well, let us know if you have any problems.
12:13:48 Okay.
12:13:50 Patrick, you had something you wanted to add yeah real quick I can show some, some progress on the gems.
12:13:57 So this basically is kind of a diagram of like the situation. So, you know particle comes through and leaves a hit in the first Genesis not the scale obviously it leaves a hit zero and the first gem and it hit x one and the second and then we hit X two
12:14:15 in the perimeter.
12:14:18 And so if you kind of do the geometry here you get this equation. So, you know, so you know your x zero and x one from the gems and so we want to know what what is our next to.
12:14:27 And so you can kind of work out just by, you know making a triangle here and figure out. This is kind of the equate where your D two and you wonder your separations here on the right.
12:14:38 Okay, so that's, that's all good and then, so then when I look at the.
12:14:45 Yeah. So this is the, the x, actually, so you would do this like for both x and y be the same situation. And so this is what I get when I look at the difference between the reconstructed x from that equation I just showed versus like the actual position
12:15:03 where it hits the gym or sorry we're hits the calorie limiter.
12:15:08 So I gotta get this nice little distribution center at zero.
12:15:12 Kind of get the same thing with why.
12:15:17 So that's all good.
12:15:33 But then when I look at.
12:15:23 Patrick, what's the, what are the units is that millimeters. Yes, these are millimeters yeah okay so you get a width of point three millimeters roughly.
12:15:36 And do you have any smearing of the jam data, not not in these plots that I had in another one. I'll show after this, I do. Okay, so this is yeah this is about any gems here.
12:15:51 But then, when I look at the side just kind of add these two, like in quadrant right you know I had the wise quad richer and the x and then, and then take the difference like for the total position.
12:16:04 And for some reason I get like this weird offset with you know the meaning of like point one four, or minus point one four.
12:16:13 So I'm not really sure what's going on there I have to think about a little more might be some weird correlations going on, that I didn't account for.
12:16:23 And there was no offset in the previous two graphs.
12:16:26 Yet, correct says, roughly centered zero, huh. Yeah, yeah. Something's strange course, adding those things in quad richer doesn't
12:16:38 you know you're trying to find a
12:16:43 sort of the radius of them off from where they should be.
12:16:49 Yeah.
12:16:51 Yeah. And then, I mean it's kind of the same situation just with, you know, a larger standard deviation for so this is with this mirror. Yeah.
12:17:01 So this is a standard deviation Lee point three eight the other ones I point two nine.
12:17:07 And yeah, so it's kind of roughly the same, the same deal so still get this, you know offset of about, minus point one four. Yeah.
12:17:17 Yeah, so I got, I've got to figure out what's going on there.
12:17:22 I guess I wanted to ask you if I don't know if this is what's causing it. But just kind of check that the way that I'm generating the smearing is right so.
12:17:32 So you have again set of resolution of a point to.
12:17:39 What is the 200 microns.
12:17:39 Yeah. So, point 2.2 millimeters. That's right, yeah.
12:17:45 Yeah, you should generate a Gaussian that centered around the actual point and, yes, that's what I have here, with yeah so set me as zero and with a point to.
12:17:59 And I'm kind of like, so I'm basically generate I'm basically random sampling along like the circumference of the circle.
12:18:07 Yes, I'm like generating this angle and and the, you know, basically the the radius.
12:18:15 And then, you know, applying it like that So applying it to the x.
12:18:30 Well, I wouldn't do it slightly different. Okay.
12:18:40 I would,
12:18:40 I would just take the, the local exposition, and add what you get out of Raz smear to that. And then I'd get a shoot for another goes in with point two.
12:18:59 And just to add that to the why. Yeah, because you know yours, you're correlating the.
12:19:08 The smearing.
12:19:13 Okay, yeah, I first Friday. That's how I did it first and then kind of went back and thought maybe I'd done it wrong.
12:19:20 Anyway, I think it looks like it has a small effect then with 200 micron resolution yeah it's it's probably not going to be so significant.
12:19:33 Yeah, yeah.
12:19:34 Anyway, yeah.
12:19:36 Okay, yeah, so I'll go back in and yeah look at that. Yeah,
12:19:42 yeah, That's all I had.
12:19:44 Okay, great.
12:20:03 I'm just for my own knowledge Patrick I saw you were using the CL hip random number generator is there a reason you're using that instead of Route right i mean it's probably better but like do you know offhand like it demonstratively is.
12:20:01 So else elsewhere in the code. Someone had used the CL have one, I guess I assumed it was you, but I guess I guess not. But, so I I'd seen that and I figured okay I guess I'll use that.
12:20:20 Okay. Yeah, I would assume generally it's probably better than whatever route does but, yeah, okay, Okay, let me try to see what was that it easily could have been me or I could have copied it from someone else or yet it's in the generator code for like,
12:20:29 for sampling the x and y.
12:20:32 That's probably me then. Yeah.
12:20:35 Yeah. Then, I have no idea why use.
12:20:38 I probably had a, an old piece of code that use that I just copied it.
12:20:47 Yeah, I noticed at some point we initialize the seed.
12:20:54 Now, do we initialize it in CL help or do we initialize it in route, so we should try and be consistent, I suppose.
12:21:07 Yeah.
12:21:08 Okay, maybe I'll have a look at that see where it's done I can't remember who did that, I think, Ethan you may have written.
12:21:17 When you do the,
12:21:23 the, the run.
12:21:27 The run event.
12:21:29 Action. Yeah, that that might have been me that was likely copied from the Muse simulation. Yeah. Yeah. So, oh look at that see which, and then we should just try and be consistent I can do a search on on the random number generator so make sure that
12:21:48 we're using the same one.
12:21:51 In every case and so that you can, you know, we write out the seed, I know.
12:21:59 Yeah. And if you really wanted to you could go back and try and reproduce it by using the same seed. I'm not sure that really works but not when you're generating all these particles that can all
12:22:17 you know rounding errors and things like that would. I've never tested that i would i would be pretty surprised if it reproduced perfectly right now. That's what I think.
12:22:27 I mean, I guess maybe the vertex would be identical, but that's probably it. Yeah. Yeah.
12:22:36 Very quickly, degenerate. Yeah.
12:22:41 Okay. Uh, anything else.
12:22:49 Okay, I don't have anything else, then we will meet on Thursday at nine o'clock this week.
12:23:00 And,