SSD Operations August 20 2007 H Matis for

SSD Operations August 20, 2007 H. Matis for the SSD group STAR Operations Workshop 2007 H. Matis 1

Key Active People this Year • US • France – – – – Christophe Renard Stephane Bouvier Gerard Guilloux Jonathan Bouchet Artemious Geromitsos Jerome Baudot David Bonnet –Michael Le. Vine –Jim Thomas –Vi Nham Tram –Howard Matis –Poland –Jacek Plebanek –Radoslaw Pieniazek I hope I have not left someone out STAR Operations Workshop 2007 H. Matis 2

SSD Timetable STAR Operations Workshop 2007 H. Matis 3

Tasks • • • QA, filtering, calibration Repair and maintenance Upgrade cooling L 2 Readout upgrade Slow controls Runtime operations Reinstallation QA monitoring STAR Operations Workshop 2007 H. Matis 4

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 STAR Operations Workshop 2007 H. Matis 5

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 STAR Operations Workshop 2007 H. Matis 6

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 STAR Operations Workshop 2007 H. Matis 7

SSD Readout Upgrade (urgency: 2 start 11/2007) • Upgrade electronics Design of new readout • Must be sensitive to DAQ 1000 • 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 STAR Operations Workshop 2007 H. Matis 8

L 2 upgrade and fix (urgency: 2 Implemented before DAQ occupied with data taking) • SSD crashes with L 2 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 STAR Operations Workshop 2007 H. Matis 9

New SSD-specific slow controls (urgency: 2 start 3/2008) • Replace EPICS/Vx. Works 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] STAR Operations Workshop 2007 H. Matis 10

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 STAR Operations Workshop 2007 H. Matis 11

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 STAR Operations Workshop 2007 H. Matis 12

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): – – 2 D occupancy plot (#SSD hits/#global tracks) distribution SSD hit vs. phi Plots for shift crew or SSD expert • QA did not work well in Run 7 – Need real-time monitoring • Implementation : 1 FTE for ~1 month STAR Operations Workshop 2007 H. Matis 13

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 STAR Operations Workshop 2007 H. Matis 14

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 DAQ 1000 era STAR Operations Workshop 2007 H. Matis 15

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. Matis 16