Seq. Number (TBA   )
Research Plan at RIKEN CC-J 
                                         Date: 30/ 6/ 2005(DD/MM/YY)
To: the Planning and Coordination Office of RIKEN CC-J

Reseach Subject : Estimate blocking effect of single electron by materials using PISA for run3pp.

(PHENIX official or not :      not )

Person responsible for this reserch:
Name : Manabu Togawa
Tel/Fax : +1-631-344-2679
E-mail : togawa@nh.scphys.kyoto-u.ac.jp

Person responsible for the job submission:
Name : Manabu Togawa
Tel/Fax : +1-631-344-2679
E-mail : togawa@nh.scphys.kyoto-u.ac.jp

Other collabrators in this research subject:
Name : Yasuyuki Akiba
tel/Fax: 048-467-9347/4641
E-mai: akiba@rcf.rhic.bnl.gov
Name : Fukutaro Kajihara 
Tel/Fax : tel: +1-631-344-2734/7158
E-mail : kajihara@bnl.gov 

Summary of this research (10-100 lines)

We are interested in charm/beauty physics by using electrons 
which are from semileptonic decay of D/B meson. These electrons 
loss its energy passing through the materials which are placed 
between collision point and EMCal.
From these effect, electron spectra we corrected can be small. 
We call this effect as “blocking effect”We want to estimate 
correction function of this effect by using PISA as following setup.

In run3 pp, we usually took the data with beam pipe(0.3%), 
He bag(0.06%) and MVD(0.9%). Additinally, we put well known 
converter (1.7% and 6.8%) around the beam pipe to evaluate 
electrons from gamma conversion.


Estimated CPU time required : 4000h for RSCC
                              
Estimated disk space usage required :  10GB

Estimated HPSS space usage required :  30GB

HPSS band width for above estimate  :       MB/s

Target date for completion (cpu) : 10/ 7/ 2005  (DD/MM/YY)
                           (disk): 15/ 8/ 2005 

Plan for the publication of this result (if possible)

Other useful infomation

Single electron spectra of RUN3pp will be presented at Quark Matter 2005 (8/4-8/9)

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