Dear Brahms friends
The following is the executive summary of the discussion at BNL last
week on BRAHMS analysis
planning. The experiment and RHIC has worked quite well in the last
weeks and we have several
million collisions with working detectors on store. So now is the time
for getting serious analysis under way.
A.
The preparation of a publication with measured DN/deta distributions
from BB and Tiles is the highest priority of the collaboration right
now.
It was agreed to set a firm time scale for events.
1) people who have carried out specific analysis tasks will document
analysis procedure and results so far in (typically) 3-4 page
doicuments and make these available to the collaboration as a http
based Brahms notes or memos. This should be done before sept 8.
Tasks:
BB: Yuri Blakman ( Has already delivered . Bravo!) .
Tiles : JHL, HI.
TPC vertex: EJK,FR, TST
Trigger: FV
2) Additional work is needed to clarify outstanding issues (work groups
should be formed to address issues speedily and effectively)
-Tiles energy calib. linearity , response: JHL, RD
-Background in Tiles from MC: JHL, HI,EJ
-Background in BB: YB, JHL,HI,EJ
-Response of BB: YB, JHL, DB
It was agreed that we should have new input on these issues before sept
15.
3) A level 0 paper draft will be produced by JJG before sept 10.
4) We should aim at a final draft by sept 30.
The progress in analysis should be documented once pr. week with a short
text and figures. (Note or Memo in http format)
B.
In parallel a strong and concerted effort should be made to develop
working code for global tracking with PID,
aiming at having working code by sept 30 at the latest, so that we may
start doing spectrometer physics.
In particular high priority items are:
0) clarify geometries of MTP1, MTPC2,T1,T2: FV, EJK
1) track matching between MTPC1 and MTPC2 and between T1 and T2
2) Projection of tracks from MRS to TOFW and from T2 to H1. Analysis of
time spectra for
slats associated with TPC tracks.
3) Calibration procedure for TOF
4) Estimation of tracking efficiency (local and global)
A working group to work on this should be formed: IGB,PC,DO,TST,BS,
FV,FR,EJK,
It is natural to have to have two subgroups on either side of the
atlantic. However these should communicate and work closely together and
each produce a progress report WEEKLY, (Note or memo on http) for common
and mutiual information. FV will report on BNL work,
IGB will report on Scand. work.
C.
People who have written analysis code should commit it to the directory
BrApps with a short documentation on content, procedure used,
approximations made etc. , even if the code is not final
and 'golden'.This is important not least to avoid duplication of effort
and to serve as an example for new code development by the less
experienced.
Cheers
Jens Joergen and Flemming
__________________________________________
JENS JORGEN GAARDHOJE
Assoc. Prof. of Physics, Dr. Scient.
Niels Bohr Institute,
University of Copenhagen
Blegdamsvej 17, 2100 Copenhagen
Denmark.
Tlf: (+45) 35 32 53 09 (dir)
(+45) 35 32 52 09 (secr)
Fax: (+45) 35 32 50 16
Email: gardhoje @ nbi.dk
Home page: http://alf.nbi.dk/~gardhoje
-Chair Ph. D. School of Physics at NBI.F.AFG.
(secr. Frank Kristensen 35 32 04 41, Ørsted Lab.)
-Member Danish National Commission for UNESCO
(secr. Ulla Holm 35 32 52 72, NBI)
___________________________________________________
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