1 SSD status report – 16 July 2004 Jerome Baudot, Strasbourg STAR Collaboration Meetin BNL, 16 July 2004 Silicon Strip Detector status report Report on last year Completion this year
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1SSD status report – 16 July 2004
Jerome Baudot, Strasbourg
STAR Collaboration MeetingBNL, 16 July 2004
Silicon Strip Detector status report
Report on last year
Completion this year
2SSD status report – 16 July 2004
SSD structureSSD structure
24 cm
a module
a ladder
Strip detectors
double sided
2 in r, -1<<+1
500k channels
Performances
R ~ 20 m
readout ~ 5 ms(4 RDO boards)
air cooled
Command (JTAG)
initialize FEE
slow control
3SSD status report – 16 July 2004
How many ladders do we have ?How many ladders do we have ?
run III run IV
½ SSD =10 ladders =160 modules
1 ladder =16 modules
4SSD status report – 16 July 2004
Operations in run IVOperations in run IV
AuAu data 60+14 Mevts
1 RDO board died mid-february
2 others RDO unplugged ! for pp
FEE eratically loosing bias (know how to fix)
1 air compressor failure
No L2 accept
Monitoring
1st Slow Control version
1st histos set in Online
No alarms handling
Electronic logbook
5SSD status report – 16 July 2004
Data analysisData analysis
The basics
pedestal as expected
noise
S/N
6SSD status report – 16 July 2004
We do see particlesWe do see particles
P side
N side
Landau fit :
same charge collectedon both sides particles
7SSD status report – 16 July 2004
Data analysis : pedestal Data analysis : pedestal instabilityinstability
15 January 2 April
dead
RD
O b
oard
8SSD status report – 16 July 2004
Production status nowProduction status now
Modules
>160 done
Ladders
(10 already installed)
9 done
ladder 0
2 spares doneDetector completed
this summer1 new sector (out of 2) of 5 ladders
9SSD status report – 16 July 2004
Installation for summer 2004Installation for summer 2004
2-22 August
get new sectors of 5 ladders
redispatch mounted ladders -> sect 7 lad
test all 4 sectors (2x3+2x7)
shielding
test RDO boards (1 new)
install new power supplies
change pedestal compensation (against fluctuation)
>23 August
rolling in
test
Integration
L2 acept
alarm handling
no more Reset (FEE bias)
new sectors
old sector
old sector
run IV run V
10SSD status report – 16 July 2004
SSD software integrationSSD software integration
Already completed
Daq : SsdReader
Ssd hit reconstruction
StiSsd (almost done, not yet reviewed, need to be tuned)
Almost done
Databases (Geometry and Calibration) : defined, currenctly filling
Need more work
Alignement : starting from StSvtAlignment ? (used for the SSD sometime ago)
Data
SsdReader
ReconstructionSsdPointMaker
StEventStSsdHits
ITTFStiSsdDetector
Simulationsisdgeo.g
StSsdSimulation
AlignmentStSsdAlignme
nt
Db, Geom, Calibration
11SSD status report – 16 July 2004
SSD in GSTARSSD in GSTAR
Material distribution and radiation length
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