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[Star-fst-l] Number of radial segmentations for Forward Silicon Tracker

From: Zhenyu Ye <yezhenyu2003 AT gmail.com>
To: "Webb, Jason" <jwebb AT bnl.gov>, "Van Buren, Gene" <gene AT bnl.gov>, Daniel Brandenburg <dbrandenburg.ufl AT gmail.com>
Cc: star-fst-l AT lists.bnl.gov
Subject: [Star-fst-l] Number of radial segmentations for Forward Silicon Tracker
Date: Wed, 26 Jun 2019 08:16:46 -0500

Hi Jason, Gene,

I was told by Daniel Brandenburg that you made the point to him very recently
that more radial segmentations are absolutely needed for Forward Silicon
Tracker. This would contradict to the statement in page 41 of the proposal
https://drupal.star.bnl.gov/STAR/system/files/ForwardUpgrade.v20.pdf

“In addition, we increased the radial segmentation from 8 to 16, 32, and 64
and found no significant improvement on the momentum resolution or tracking
efficiency.”

Can you please help me understand why you believe more radial segmentations
are needed for FST?

Jason, I was also told by Daniel that the global track efficiency for those
plots is wrong. Can you please tell me what is wrong with them?

Thanks,
Zhenyu

[Star-fst-l] Number of radial segmentations for Forward Silicon Tracker, Zhenyu Ye, 06/26/2019
- Re: [Star-fst-l] Number of radial segmentations for Forward Silicon Tracker, Daniel Brandenburg, 06/26/2019
  - Re: [Star-fst-l] Number of radial segmentations for Forward Silicon Tracker, Zhenyu Ye, 06/26/2019
    - Re: [Star-fst-l] Number of radial segmentations for Forward Silicon Tracker, Jason C. Webb, 06/26/2019
      - Re: [Star-fst-l] Number of radial segmentations for Forward Silicon Tracker, Daniel Brandenburg, 06/26/2019