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