SSD Operations

1
SSD Operations

• August 20, 2007
• H. Matis for the SSD group

2
Key Active People this Year

• US
• Michael LeVine
• Jim Thomas
• Vi Nham Tram
• Howard Matis
• Poland
• Jacek Plebanek
• Radoslaw Pieniazek

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

I hope I have not left someone out
3
SSD Timetable
4
Tasks

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

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

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

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

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

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

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

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

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

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

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

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

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?