star operations workshop 2007 h. matis1 ssd operations august 20, 2007 h. matis for the ssd group

STAR Operations Workshop 2007

H. Matis 1

SSD Operations

August 20, 2007

H. Matis for the SSD group


H. Matis 2

Key Active People this Year

• France– Christophe Renard– Stephane Bouvier– Gerard Guilloux– Jonathan Bouchet– Artemious Geromitsos– Jerome Baudot– David Bonnet

•US–Michael LeVine–Jim Thomas–Vi Nham Tram–Howard Matis

–Poland–Jacek Plebanek–Radoslaw Pieniazek

I hope I have not left someone out


H. Matis 3

SSD TimetableRun Date Ion SSD state Pixel

Prototype DAQ 1000

8 Nov. 2007

d + Au p + p

Out Out No

9 Nov. 2008

Au + Au p + p Low Mass Run

Scenario I Out No

10 Nov. 2009

Low Energy Au + Au p + p

Scenario II In Yes


H. Matis 4

Tasks

• QA, filtering, calibration• Repair and maintenance• Upgrade cooling• L2• Readout upgrade• Slow controls• Runtime operations• Reinstallation• QA monitoring


H. Matis 5

QA, filtering, calibration(urgency 1 - now)

• Tasks– Run filtering– HV shifts– Alignment– Cluster detection

• People– Jonathan (graduating)– Artemious– Jacek– Radoslaw

• Need post doc leading this effort– Continuity when detector is used again

• To do (when detector is reinstalled)– Improve QA information so that they are easy to understand


H. Matis 6

Repair and Maintenance(urgency 1 - now)

• Several ladders are broken• Ladders need to be checked and broken ones repaired• Repairs must be done at Nantes• People

– Stephane– Help from Michael, Jim, and I

• To do– Create a test bench at BNL for inspection– Need BNL tech - 20% FTE to learn system, diagnose and

repair– Assemble parts inventory

• CAEN power supply “flakey” – Repair or spares - lower priority


H. Matis 7

Upgrade Cooling(urgency 2)

• Scenario I – October 1– 1/4 FTE designer for new cooling system– Transfer SVT slow controls system to SSD

• Slow control group

– Install cooling interlocks

• Scenario 2 - Next year– Cooling done as part of HFT installation– Need to relate slow control interface to SSD

interlocks


H. Matis 8

SSD Readout Upgrade(urgency: 2 start 11/2007)

• Upgrade electronics Design of new readout• Must be sensitive to DAQ1000• STAR needs to define triggering requirements

• Personal for upgrade• Christophe (Nantes) 0.75 FTE-yr• Michael 0.5 FTE-yr• Digital electronics engineer (BNL - TBD) 0.75 FTE-yr

• Software to decode new data format• Michael L. 0.1 FTE-yr


H. Matis 9

L2 upgrade and fix(urgency: 2 Implemented before DAQ occupied with

data taking)

• SSD crashes with L2 trigger• Large amount of data needlessly sent to be

compatible with existing code• Only needed for scenario 1• People

– Michael - 2 months– Christophe– STAR DAQ person for diagnosis


H. Matis 10

New SSD-specific slow controls(urgency: 2 start 3/2008)

• Replace EPICS/VxWorks with Linux version– Can no longer support SUN-based system

• New presentation required for new readout architecture– David Bonnet did excellent job in pass– Need new 1 scientist FTE-yr (TBD) [both tasks]


H. Matis 11

Runtime Operations(urgency: 2 start 8/2008 or 9/2009)

• Run 7 - 3 people/week - 2 FTE/week• Run 7 crew

– Michael, Jim, Vi Nham– Jonathan, Artemious– Jerome (in France)

• Did not train “super” expert• Need one leader for the runtime operations

group– Knows all whims of the detector– Resident at BNL


H. Matis 12

Reinstallation(urgency: 2 start 8/2008 or 8/2009)

• Reinstall detector and test - One month• Installation

– Stephane– Gerard– BNL Tech

• Testing– Christophe– Train runtime crew


H. Matis 13

QA monitoring(urgency: 2 start 8/2008 or 8/2009)

• Need instantaneous online monitoring– Helps to understand the SSD behavior (HV, reboot of the

Slow Control…)– And to take action if needed

• Need to revisit the current plots (less but relevant):– 2D occupancy plot– (#SSD hits/#global tracks) distribution– SSD hit vs. phi– Plots for shift crew or SSD expert

• QA did not work well in Run7– Need real-time monitoring

• Implementation : 1 FTE for ~1 month


H. Matis 14

To do Scenario I or 2?(urgency 2 - decision by January 2008)

• Does the SSD hurt or help the low mass run?– Does it separate non-photonic electronics from background?

• SSD is used to calibrate the TPC– How important is this?

• Need analysis by working groups of pros and cons of having it in

• Installation and cone design• Path of upgrades

– Is upgrade funding available• Longer the SSD out, the more institutional memory lost• Decision needs to made by management by say January 31,

2008


H. Matis 15

Homework for SSD Group (urgency 1 - Completed by October 2007)

• Need to write short proposal– Jim and I– Describe in detail how to update SSD

• Memorandum of Understanding– Michael and Stephane (Christophe)– Between STAR and SUBATECH– Formally establish collaboration in DAQ1000 era


H. Matis 16

Summary• This year assembled a good team

– Strong support from the French– Need to transfer center of gravity of support to North America

• significant training and a “Blair” for the detector

• STAR management must establish when the SSD will be reinstalled– Establish formal structure for the group with institutional

responsibilities• Upgrade path must be specified

– Need money, engineering and tech support• Many key personal are graduate students, postdocs

– French support will not increase– Need to identify positions and funding for hire

• Excellent project for small university group to join and provide significant contribution– Any volunteers?

star operations workshop 2007 h. matis1 ssd operations august 20, 2007 h. matis for the ssd group

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