sct testbeam: report & plans gareth moorhead (with thanks to lars eklund for being there for me)...
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G.F.Moorhead SCT Testbeam Update June 2003, SCT Uppsala Testbeam May - June 2003 Participants Sophie Chouridou, Bettina Mikulec - CERN Yohsei Iwata, Akiko Imoto - Hiroshima University Ryuichi Takashima - Kyoto University of Education Christian Ketterer - Freiburg Allan Clark, Mariane Mangin-Brinet, Shulamit Moed - Geneva Tom Atkinson, Gareth Moorhead - Melbourne Reisaburo Tanaka, Youji Tomeda - Okayama University Peter Kodys - Prague Charles University Stan Bentvelsen, Thijs Cornelissen, Sandra Muijs - NIKHEF Paul Dervan - Sheffield Jose Enrique Garcia Navaro, Sergio Gonzalez, Marcel Vos - IFIC Valencia Apologies to anyone forgottenTRANSCRIPT
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SCT Testbeam: report & plans
Gareth Moorhead(with thanks to Lars Eklund
for being there for me)
Uppsala 13 June 2003
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G.F.Moorhead SCT Testbeam Update June 2003, SCT Week @ Uppsala
Contents• Report on the recent beamtest 19 May to 02 June
(most details to follow in Jose & Sergio's talk)
• Next beamtest: August - September 2003– Dates not yet final due to SPS proton run extension
• 2004: Inner Detector Common Run– Advance warning
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G.F.Moorhead SCT Testbeam Update June 2003, SCT Week @ Uppsala
Testbeam May - June 2003
Participants
Sophie Chouridou, Bettina Mikulec - CERNYohsei Iwata, Akiko Imoto - Hiroshima UniversityRyuichi Takashima - Kyoto University of EducationChristian Ketterer - FreiburgAllan Clark, Mariane Mangin-Brinet, Shulamit Moed - GenevaTom Atkinson, Gareth Moorhead - MelbourneReisaburo Tanaka, Youji Tomeda - Okayama UniversityPeter Kodys - Prague Charles UniversityStan Bentvelsen, Thijs Cornelissen, Sandra Muijs - NIKHEFPaul Dervan - SheffieldJose Enrique Garcia Navaro, Sergio Gonzalez, Marcel Vos - IFIC Valencia
Apologies to anyone forgotten
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G.F.Moorhead SCT Testbeam Update June 2003, SCT Week @ Uppsala
Testbeam May - June 2003
Schedule: 12 May - 05 June
Mon
Tue
WE
d Thu
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Mon
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12 / 5
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01 / 6
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Pre-characterisation in Irrad. Lab. (Christian)
Installation at H8 & in-situ characterisation
Beam tuning (Adrian Fabrice - Many thanks)
Normal beam
SCT priority
25ns beam
MDT & TGC priority - 1st Level Trigger tests
SCT, PIX, TRT, TileCal also running
Post-characterisation
Installation at H8
De-installation
(Abbreviated from the original plan due to the PS startup problems and subsequent SPS "beam scrubbing" run)
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G.F.Moorhead SCT Testbeam Update June 2003, SCT Week @ Uppsala
Testbeam May - June 2003
Schedule
Two periods:
• 3 days of SCT priority with normal beam, 4.8 s spill length- Random trigger => TDC cut 10ns/25ns as usual (40% efficiency)
• 7 days of 25ns beam, multiple users, 2.6 s spill length (fewer events / spill)- Synchronous trigger => No TDC cut (all events in time - we hope !)- Included 1 day of SCT priority for magnet & material studies which excluded other users
Multi-user periods worked reasonably well.
Pixels relocated to NA45 (upstream position) to reduce conflicts
Opportunities to use Magnet or low momentum beam were very limited
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G.F.Moorhead SCT Testbeam Update June 2003, SCT Week @ Uppsala
Testbeam May - June 2003
Modules
Module Type Irradiated ? Comment
20220330200003 Barrel FULL; 10 Oct 2002 Irradiated unpowered, unbiased
20220170200153 Barrel FULL; 10 Oct 2002 Irradiated unpowered, unbiased20220170200010 Barrel No Large Negative Offset on 1 chip 20220170200447 Barrel No (goes to irrad) Large Gain Spread on 2 chips20220040200018 Barrel No (goes to irrad) Anchor; Large Oscillation module K5_312 Endcap Outer FULL K5_503 Endcap Outer FULL K5_504 Endcap Outer FULL K5_310 Endcap Outer HALF K5_303 Endcap Outer HALF k5_306 Endcap Middle No MPI/Prague
20220130000002 Endcap Outer No Geneva/CERN Pre-qualification module
• 3 Barrel modules with anomalies - two will go after to Irradiation, and then Beamtest again in September
• 2 Barrels irradiated unpowered & unbiased
• 5 Irradiated endcaps - individual performance & also tracking study using 3 fully irradiated modules
• 1 pristine "Pre-qualification" outer endcap for comparison, plus a middle for interest
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G.F.Moorhead SCT Testbeam Update June 2003, SCT Week @ Uppsala
Testbeam May - June 2003
Program
• One module as anchor (efficiency reference at 1 fC, 150 V), barrel 00010
• Standard performance studies at several positions across modules
• Threshold scans (Qthr) at bias combinations:Irradiated: 350 V, 500 V, 400 VUnirradiated: 150 V, 300 V, 200 V
• Bias scans (Vdet) at thresholds: 0.9 fC, 1.0 fC, 1.1 fC, 1.2 fC, 1.5 fC
... then the fun stuff ...
• Relative timing adjustment (signal cable length): all modules +/- approx 3 ns
• Synchronous beam (25ns) timing scan - efficiency versus trigger cable delay
• Tracking studies at 180 GeV/c, magnet 0 A, 2500 A, 5000 A (~ 0, 0.8, 1.6 T)
• Low momentum multiple scattering study : 50, 20, 10 GeV/c pions
• Target studies, 10 mm Tungsten target immediately upstream of modules to look GEANT4 simulation
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G.F.Moorhead SCT Testbeam Update June 2003, SCT Week @ Uppsala
Comments...
• SCTLV3 gave many problems... too many dead channels; several channels failed in service during the ~ 3 week continuous use
• The two barrel modules irradiated unpowered & unbiased wereoperated at Vcc = 3.8 V as no useful performance could be found atVcc = 3.5 V
• Noise in H8 (12 modules in proximity, no metal cover plates etc.) ~100 - 300 electrons worse than lab., as previously experienced
• Details, including all standard characterisations in lab., and beforeand after at H8, can be found at: http://atlas.web.cern.ch/Atlas/GROUPS/INNER_DETECTOR/SCT/tbMay2003/
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G.F.Moorhead SCT Testbeam Update June 2003, SCT Week @ Uppsala
Next beamtest : September 2003• Currently scheduled:
– SCT main or co-user run 28 Aug to 2 Sep– ATLAS Common DAQ run 3 to 8 Aug
• However, the Research Board has approved 2 week extension to compensate for the time lost due to the beam scrubbing run
• Likely but not certain we will have ~ 2 weeks in September including the Common DAQ run
• Program: - Standard studies of the modules irradiated during this year, including the Large Gain Spread barrel- Common DAQ run ... minimal port of existing Mustard/Slog readout to ATLAS DAQ-1 to participate in common triggers
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G.F.Moorhead SCT Testbeam Update June 2003, SCT Week @ Uppsala
2004• Last planned year of SPS beamtest• Emphasis on ATLAS Integration testing
– Common DAQ– Common clock & triggers >>> common events– Tests of Level 1 Trigger– Dataflow (ROD s-links to ROS etc.)– Event Filter – Offline software - reconstruction etc.
• Within this context, the Inner Detector is planning a combined Pixel / SCT / TRT common run
.... Now in early discussion phase - please contact Gareth if interested in following developments.
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G.F.Moorhead SCT Testbeam Update June 2003, SCT Week @ Uppsala
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G.F.Moorhead SCT Testbeam Update June 2003, SCT Week @ Uppsala