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Energy dependence of the sampling fraction in the EEMC

Updated on Mon, 2009-08-03 10:11. Originally created by jwebb on 2009-07-31 09:11.
Abstract:  Single electrons are thrown at the EEMC for energies ranging from ~1 to ~100 GeV at normal incidence, at at an angle of incidence corresponding to η=1.8.  The sampling fraction is computed in each energy bin as the ratio of the energy deposited in the endcap plastic scintillator divided by the incident energy of the electron. Between 5 and 20 GeV, the sampling fraction is 4.09%, varying by 1% of its mean value across this energy range.  This is consistent with various recollections of the test beam data.  Beyond this range, the sampling fraction varies ~smoothly within ~6% of this value.

30 GeV photon pion0 energy deposit in FMS and FHC study

Updated on Thu, 2009-07-30 20:37. Originally created by xuanli on 2009-07-30 14:51.

    I study 30 GeV photon and pion0 energy deposit in FMS and FHC. The number of event is 2k.

30 GeV Energy particle energy deposit in FMS and FHC compare

Updated on Wed, 2009-07-29 15:04. Originally created by xuanli on 2009-07-29 13:48.

  I studied the 30 GeV n, p, pion0, pion+ and pion- energy deposit in FMS and FHC. The particles are shot from (0,0,0) to (100,0,850).

Lambda decay vertex recreating through proton pion-

Updated on Wed, 2009-07-29 13:50. Originally created by xuanli on 2009-07-28 15:38.

         I looked at the Lambda decay into proton and pion- channel using FHC and FMS, and try to recreate the Lambda decay v

STAR Management Meeting

Updated on Fri, 2009-07-31 10:56. Originally created by nxu on 2009-07-28 11:17.
2009-07-30 11:00
2009-07-30 12:00
Etc/GMT-7
Thursday, 30 July 2009
BNL, I-189 Conference room, at 15:00 (GMT), duration : 01:00

EVO: Title: STAR Management Meeting // Community:  STAR // Password:  star

           Phone Bridge: +1 626 395 2112 (CA) / +1 631 344 6100 (NY) // ID: 1154177 // Password: 0952

   Time:  11am - 12noon EDT

 * --===================================================================--*

  Agenda:

    1)    Status: QM09 proceedings - Bedanga
    2)    RHIC S&T Review: more on upgrade management -  Nu

    3)    AOB

* --====================================================================--*

               Brief Summary:

  0) Attendency: Bill, Jerome, Flemming, Jamie, Bedanga, Nu

  1) Upgrade management: watching more closely on costs and schedule, meet DoE's.

  2) Manpower/recourse for TPC: working in progress. Will need more effort to cover Run10.

  3) Run10 preparation: Expect shift starts 2nd week of Dec. 2009. Olga will send a message to the council for author list of each institute.

  4) QM09 proceedings: the organizers will be contacted to discuss the late submission of the two STAR jet-reconstruction proceegings.

  5) No management meetings next two weeks. The next regular meeting will be on Aug. 20th.  

  Notes:

   1) STAR TPC Review (key= star2009),  June 4,5, BNL. Ron Settler (chair). Review report.

   2) NPE Committee, H. Huang (chair) 

   3) FMS Review, P. Jacobs (chair)

  Future Meetings:

    1) STAR-DoE ToF Review, Aug. 10-11, BNL

    2) STAR FMS Review, Sept. 1-2, BNL

    3) STAR-DoE HFT CD-1 review, Sept. 10-11 or 14-15, BNL

    4) STAR Regional meeting: Sept. 25-26, Rio, Brazil

    5) SQM2009: Sept. 27-Oct. 2, Buzios, Brazil

    6) STAR Collaboration meeting, Oct. 5-10, Berkeley

    7) DNP 2009, Oct. 13 - 17, Waikoloa

Polarizations for each fill

Updated on Tue, 2009-07-28 09:22. Originally created by jkellams on 2009-07-28 09:22.

Etas Pass N

Updated on Tue, 2009-07-28 10:10. Originally created by aliceb on 2009-07-27 16:39.

 

Energy deposition in EEMC for an e- induced shower vs incident energy at eta=1.45

Updated on Tue, 2009-07-28 12:42. Originally created by jwebb on 2009-07-27 09:13.
Abstract:  Electrons are thrown at the EEMC at eta=1.85.  The GEANT hit information is accessed event-by-event from within GEANT.  We plot the energy registered as a HIT vs the incident e- energy.  No significant nonlinearities are observed.  A sampling fraction of 4.17% is seen.

Comparison of muon energy deposit in 1st layers of EEMC and BEMC in gstar, take 2

Updated on Mon, 2009-07-27 13:24. Originally created by jwebb on 2009-07-25 15:52.
Abstract: Muons are thrown with energies of 1, 3, 10, 30 and 100 GeV at eta = 0.025 and eta = 1.85.  The energy-loss distributions for muons in preshower-1 and the first lead radiator in the EEMC are compared energy-loss distributions in the barrel (1st lead and 2nd scintillator layers).  We also make comparisons between the mean of the distributions and the expected values based on data tables in the particle data book.  The observed means are within 5-10% of the expected values.

Polarimetry Meeting Talk

Updated on Thu, 2009-07-30 18:42. Originally created by aliceb on 2009-07-24 17:09.

Talk for polarimetry workshop July 31 2009.

 

   

FHC and FMS energy deposit practise

Updated on Fri, 2009-07-24 15:44. Originally created by xuanli on 2009-07-24 15:44.

      I am following Qinghua's geometry and kumac files to see the energy deposit in FMS and FHC with energy 30 GeV.

2009.07.21 EEMC tower response in Monte-Carlo

Updated on Tue, 2009-07-21 12:23. Originally created by seluzhen on 2009-07-20 19:10.

Data set and cuts:

07 Jul

Updated on Mon, 2009-07-20 18:58. Originally created by seluzhen on 2009-07-20 18:58.

July 2009 posts

 

Recent simulation studies in the EEMC and BEMC

Updated on Mon, 2009-07-20 10:26. Originally created by jwebb on 2009-07-19 15:27.
Summary of recent simulation tests in the EEMC and BEMC

List of small, almost trivial, problems with the Monte Carlo

Updated on Tue, 2009-08-11 15:24. Originally created by jwebb on 2009-07-18 10:58.

1. Density of polystyrene is 1.032 g/cm^3.  PDB quotes 1.06.

    ===> bicron has density of 1.032 g/cm^3... so that's where it comes from.

STAR Management Meeting (S&T Rehersal)

Updated on Tue, 2009-07-21 08:23. Originally created by nxu on 2009-07-18 10:31.
2009-07-21 10:00
2009-07-21 12:00
Etc/GMT-7
Tuesday, 21 July 2009
BNL, 50-I-189, at 14:00 (GMT), duration : 02:00

EVO: Title: STAR Management Meeting // Community:  STAR // Password:  star

           Phone Bridge: +1 626 395 2112 (CA) / +1 631 344 6100 (NY) // ID: 1132757 // Password: 0952

   Time:  11am - 12noon EDT

 * --===================================================================--*

  Agenda:

    1)    Nu's Rehearsal, pdf file (~23 MB)

* --====================================================================--*

Beam Studies at 500 GeV

Updated on Mon, 2009-07-20 17:52. Originally created by grosnick on 2009-07-17 14:09.

MySQL servers optimization

Updated on Mon, 2009-12-07 11:52 by testadmin. Originally created by dmitry on 2009-07-17 07:49.

Comparison of muon energy deposit in 1st layers of EEMC and BEMC in gstar

Updated on Sat, 2009-07-25 15:39. Originally created by jwebb on 2009-07-16 15:50.
Abstract:  Muons are thrown with energy of 100 GeV at eta = 0.025 and eta = 1.85.  Energy-loss distributions in the first layer of plastic and the first layer of lead are compared betwe

Correcting ETOW gains at 500 GeV using slopes vs tcd phase

Updated on Thu, 2009-07-16 12:49. Originally created by wissink on 2009-07-16 12:47.