1 / 5

pp Pileup Filter in 2001

pp Pileup Filter in 2001. Jan Balewski, IUCF L3 Workshop May 9, 2001 , BNL. How hard collision can be probed in 2001 ?. 10 7. P • A N ~1%. 10 3. Assuming L=4• 10 30 cm -2 s -1  NON DIF = 28 mb DAQ rate of 30 Hz  7• 10 7 events over 4 weeks. Trigger mix:

denise-ellis
Download Presentation

pp Pileup Filter in 2001

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. pp Pileup Filter in 2001 Jan Balewski, IUCF L3 Workshop May 9, 2001 , BNL

  2. How hard collision can be probed in 2001 ? 107 P•AN ~1% 103 • Assuming • L=4•1030cm-2s-1 • NON DIF =28 mb • DAQ rate of 30 Hz • 7•107 events over 4 weeks • Trigger mix: • unbias trigger (RHIC clock) • B-B counters minbias trigger • EMC high tower trigger ( p0 ) • CTB high PT trigger (ADC > ~n*MIP’s) • FPD trigger ( forward p0 ) (with some mutliplicity cut)

  3. p+p Pileup in 2001 L=4•1030cm-2s-1,NON DIF =28 mb Collision rate = 120 KHz 60 bunches/ring  213 nsec 1 coll/50 bunches = 1 coll/10 sec 40 sec TPC drift  8 coll/ TPC frame pileup  few 100 tracks in TPC diamond total width of ± 15 cm PYTHIA minbias trigger event, generated at s=200 GeV Leading Particle Track color encodes its transverse momentum (GeV/c) Y X 12 primary tracks, ~30 TPC tracks

  4. L3 topology (at some point in the past) GL3 SL3

  5. L3 pileup filter in 2001 GL3 dump • refit track segments • match tracks to CTB slats • find vertex • match tracks to vertex • tag tracks & L3 points SL3 Sector track finder Track segments TPC space points CTB Sector claster finder TPC raw TPC hits

More Related