sPHENIX tracking discussion

[Adeeb Saed <acs422 AT lehigh.edu>]

Hi Joe and Tony!

Thank you for your comments and feedback. I have now implemented all the necessary changes into my slides and plots. However, I want to respond to the concerns raised above.

1) I presented my talk to my group at Lehigh this morning and my talk was slightly over 9 minutes. I assumed that the talk would be 10 minutes with 2 minutes of questions so I aimed for a 10-minute presentation. While I do have a large number of slides, I do not spend too much time on the introductory slides. I will continue practicing of course, but as of now, I am within the allotted 10 minutes.

2) For my dE/dx plot, there is in fact a cut on the transverse momentum not the three-momentum of the particle. Based on my discussion with Joe, given our acceptance, pT converges to p at low momentum. This explains why the cut on my plot looks abrupt even though it is a cut on pT and not p.

3) For my TPC clusters on track plot, it does in fact have a cut on the quality of the track. I am selecting tracks with quality <= 100. I think Joe mentioned that the bump near 32 is caused by some dead FEE boards that stop recording clusters after 32. Is this explanation sufficient if I am asked about this?

I attached the latest version of my plots to this email. Please let me know what you think!

Thanks for your time!

Adeeb

On Thu, Oct 3, 2024 at 11:02 PM Anthony Frawley <afrawley AT fsu.edu> wrote:

Hello Adeeb,

Some comments in addition to Joe's.

Slide # 3,4,5:

The bend plane resolutions of the detector systems are well known. Using "order of" is unnecessarily vague. I suggest using:

MVTX:  ~ 5 μm

INTT:   ~ 25 μm

TPC:  ~ 150 μm

Slide #3:

The MVTX strobe length used in the run is 10 μs.

Slide # 4:

The INTT integration time is less than the bunch crossing spacing (106 ns). This is important.

Slide # 7:

The TPC collection time is now 15 μs, after adding isobutane to the gas.

Slide #11:

This is good.

Add: The collision bunch crossing is determined from the INTT cluster time.

 

Slide #12:

The plot still has pT < 0.2, should be p < 0.2.

Slide #14:

You were going to replace the ntpc clusters per track plot with a version that was made with a cut of "quality < 100". This should remove the bump around 30.

I agree with Joe, you will have to be well organized to get through the slides in 12 minutes. Make sure you practice with a stopwatch.

Please repost to the list once you update the slides.

Thanks

Tony

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From: sphenix-tracking-l-request AT lists.bnl.gov <sphenix-tracking-l-request AT lists.bnl.gov> on behalf of Osborn, Joseph <josborn1 AT bnl.gov>
Sent: Thursday, October 3, 2024 9:40 PM
To: sphenix-tracking-l AT lists.bnl.gov <sphenix-tracking-l AT lists.bnl.gov>; Adeeb Saed <acs422 AT lehigh.edu>
Subject: Re: [[Sphenix-tracking-l] ] DNP Slides (Final Draft) Adeeb Saed

 

Hi Adeeb,

Here are a few comments on your slides. Enjoy DNP!

Joe

pg 7 - reconstruction of full tracks -> reconstruction of TPC tracks

pg 13 - I would remove "evenly populated" and "reflects uniform TPC performance" as there are no efficiency corrections to this plot, therefore there are clear non-uniformities.

Also on this slide, looking back at your slides from this morning I can see that this is the same data but I'm guessing because the binning/y axis range changed there is now a single empty bin smack in the middle of the plot. Can you increase the number of bins to make this go away, as it just looks a little strange having a single white empty bin right in the middle?

pg 14 - well-constructed -> well-reconstructed

pg 22 - The run page you list will not be accessible to anyone outside of the collaboration - did you mean to cite the public page that is www.sphenix.bnl.gov? I would also cite the published paper if you are going to reference it, rather than the arXiv link.

General comments -

Did you consider adding a conclusion slide?

Have you practiced your talk to ensure you are within the 12 minute time? You have quite a lot of slides for a 12 minute talk, but maybe you intend to go through each slide quickly.

___________________________

Joe Osborn, Ph.D

Physics Department

Brookhaven National Laboratory

josborn1 AT bnl.gov

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From: sphenix-tracking-l-request AT lists.bnl.gov <sphenix-tracking-l-request AT lists.bnl.gov> on behalf of Adeeb Saed <acs422 AT lehigh.edu>
Sent: Thursday, October 3, 2024 8:36 PM
To: sphenix-tracking-l AT lists.bnl.gov <sphenix-tracking-l AT lists.bnl.gov>
Subject: [[Sphenix-tracking-l] ] DNP Slides (Final Draft) Adeeb Saed

 

Hi everyone,

Thank you very much for the feedback I received today on my slides and plots for the DNP. Your advice was invaluable. I am looking for "work-in-progress" approval on my plots. Please provide any additional comments on my material.

Here is the latest version of my presentation:

https://sphenix-invenio.sdcc.bnl.gov/records/nvxrg-9v688?token=eyJhbGciOiJIUzUxMiJ9.eyJpZCI6ImMwMGY1YzRlLTg2MzAtNGQwMS05YTM5LTM5OTg0NWJkYjc2NiIsImRhdGEiOnt9LCJyYW5kb20iOiI0MTQ3YzUyMGI4NmYzNWJhNjZmNWI1MDgyZDI1NDM5NiJ9.iBlV4r3i2jerclxse1xMBH0PSGPKCekzJgkP8XK0iDYbo4IDwbxLexEkTcr_BxKhd5BymT8lBjNidStCJLQ2ng

Thank you and I look forward to hearing from you!

Adeeb

Attachment: DNP_Slides_AdeebSaed_100424.pdf
Description: Adobe PDF document