SSD weekly meeting

2008-10-01 11:00
2008-10-01 12:00
Etc/GMT-4
Wednesday, 1 October 2008
conference call-in (510) 486-7333, at 15:00 (GMT), duration : 01:00
TimeTalkPresenter
00:00News ( 00:10 ) 0 filesAnyone
00:10Cables on the Cone ( 00:10 ) 5 filesChristophe
00:30Ideas for Low Mass Cables ( 00:20 ) 1 fileGerard Visser
00:50Budget and Schedule ( 00:20 ) 0 filesHoward
01:10AOB ( 00:20 ) 0 files

SSD weekly meeting

2008-06-11 11:00
2008-06-11 12:00
Etc/GMT-4
Wednesday, 11 June 2008
conference call-in (510) 486-7333, at 15:00 (GMT), duration : 01:00
TimeTalkPresenter
00:10Change of Mailing List ( 00:05 ) 0 filesHoward
00:15Presentation to STAR Collaboration Meeting ( 00:20 ) 1 fileHoward
00:35Presentation to STAR Collaboration Meeting ( 00:20 ) 1 fileJonathan
00:55AOB ( 00:20 ) 0 files
01:15News from Nantes ( 00:10 ) 0 filesChristophe/Stephane

SSD weekly meeting

2008-02-13 11:00
2008-02-13 12:00
Etc/GMT-4
Wednesday, 13 February 2008
conference call-in (510) 486-7333, at 16:00 (GMT), duration : 01:00
No meeting today. Most of us are in India ..

SSD weekly meeting

2008-02-20 11:00
2008-02-20 12:00
Etc/GMT-4
Wednesday, 20 February 2008
conference call-in (510) 486-7333, at 16:00 (GMT), duration : 01:00

SSD weekly meeting

-00-00
Thursday, 1 January 1970
, at 00:00 (GMT), duration : 00:00
TimeTalkPresenter
11:00SSD status Report ( 00:10 ) 1 fileJonathan & Artemios
11:15Update on pedestal monitoring and hit occupancy ( 00:10 ) 1 fileJonathan Bouchet
11:25AOB ( 00:15 ) 0 filesEveryone

SSD weekly meeting

2007-08-29 11:00
2007-08-29 12:00
Etc/GMT-4
Wednesday, 29 August 2007
TBD, at 15:00 (GMT), duration : 01:00

SSD weekly meeting

2007-11-28 11:00
2007-11-28 12:00
Etc/GMT-4
Wednesday, 28 November 2007
TBD, at 16:00 (GMT), duration : 01:00
TimeTalkPresenter
00:00Current status of review committees ( 00:20 ) 0 filesEveryone
00:20Shipping of Detectors ( 00:10 ) 0 filesMichael
00:30L2 Status ( 00:20 ) 0 filesMichael
00:50Software : hit residual ( 00:10 ) 2 filesJonathan
01:00Anything Else ( 00:20 ) 0 files

SSD weekly meeting

2008-09-24 11:00
2008-09-24 12:00
Etc/GMT-4
Wednesday, 24 September 2008
conference call-in (510) 486-7333, at 15:00 (GMT), duration : 01:00

SSD weekly meeting

2008-06-04 11:00
2008-06-04 12:00
Etc/GMT-4
Wednesday, 4 June 2008
conference call-in (510) 486-7333, at 15:00 (GMT), duration : 01:00

SSD - no meeting

2008-02-13 11:00
2008-02-13 12:00
Etc/GMT-4
Wednesday, 13 February 2008
conference call-in (510) 486-7333, at 16:00 (GMT), duration : 01:00

SSD weekly meeting

-00-00
Thursday, 1 January 1970
, at 00:00 (GMT), duration : 00:00
TimeTalkPresenter
11:00SSD status Report ( 00:10 ) 0 filesVi Nham
11:10Follow up on the cucu re-production ( 00:10 ) 0 filesJonathan Bouchet
11:20Performance of the Silicon Strip Detector of the Star -- "rehearsal" ( 00:30 ) 0 filesJonathan Bouchet

SSD weekly meeting 1-510-486-7333

2007-09-05 11:00
2007-09-05 12:00
Etc/GMT-4
Wednesday, 5 September 2007
TBD, at 15:00 (GMT), duration : 01:00
TimeTalkPresenter
00:00Proposal ( 00:05 ) 1 fileHoward
00:05Helen Caines to chair a small committee to look at to re-install the SSD. ( 00:05 ) 0 filesJim
00:11When to send the last Shipping Crate ( 00:07 ) 0 filesJim
00:13Shall the US contingent plan on making a trip to Nantes to discuss the proposal, an MOU, and/or system tests? ( 00:01 ) 0 filesJim
00:20Modeling dead time behavior for the new SSD readout architecture ( 00:20 ) 2 filesMicheal
00:40Software Status ( 00:10 ) 0 filesJonathan and Vi Nham

STAR Council information

Welcome to the STAR council page.

Chairperson: Kenneth Barish

Cu+Cu data readiness, last overview

Speaker : Yuri Fisyak ( BNL )


Talk time : 12:50, Duration : 00:10

Looking at this year's distortions: Zerobias data and TPC shorts

Speaker : Gene Van Buren ( BNL )


Talk time : 12:35, Duration : 00:15

TPC Zerobias Data / SpaceCharge

Here's a first look at TPC zerobias data from this year. The data (~10k events) shows a distribution consistent with collisions without significant backgrounds in both the east and west halves of the TPC, and that the two halves are about the same. This data was acquired at ZDC coincidence rates of ~2.2k.
TPC East charge distribution
TPC West charge distribution

Plot details:

  • Top left plot is projection of measured charge vs. radius; black is all, red is on tracks
  • Top righ is same vs. phi
  • Middle left is measured charge vs. R and phi.
  • Middle right is same minus 1/r^n fit in top left plot
  • Bottom right is same, slightly different view.
  • Red hists/curves are for hits on tracks, but tracking in this data is questionable, so just ignore.
  • Sinusoidal model used to fit the azimuthal distrubution is not a strict expectation; for insight only. I have corrected for acceptance (live pad areas) in each bin.

    Fluctuations in azimuth are well below 10%; compare that to 2004 data where notable backgrounds were seen in specific phi regions:
    2004 Day 46
    2004 Day 50
    This is GOOD NEWS! But I should check this again for higher ZDC rates.


    TPC Field Cage Short

    IFC East field cage short has steadily gotten worse over the course of running so far:

    Horizontal axis is seconds since 2007-01-01 00:00:00. Vertical axis is missing resistance in MOhms inside the TPC (the measured current is turned into a resistance and corrected for the external resistance added outside the TPC). Red points are samples taken during runs (black are outside of runs). Sampling rate is generally every 15 seconds. Observed spread is dominated by real fluctuations, not sampling error.

    We are watching this closely as it is assumed that this fluctuating electrical short is between two rings where there is a 3 MOhm resistor (see Field Cage Shorts). If it significantly exceeds 3 MOhms, then we do not understand what is going on.


    Gene Van Buren
    gene@bnl.gov

  • SSD table reshape

    Speaker : Jonathan Bouchet ( Subatech )


    Talk time : 12:25, Duration : 00:10

    Database issues and resolution path

    Speaker : Micheal DePhillips ( BNL )


    Talk time : 12:15, Duration : 00:10

    News from the front

    Speaker : Jim Sowinski ( IUCF )


    Talk time : 12:00, Duration : 00:15

    Abstrakt for Berkeley School on Collective Dynamics

    Speaker : Marcin Zawisza ( WUT )


    Talk time : 15:30, Duration : 00:10

    AOB

    Speaker : All ( All )


    Talk time : 12:55, Duration : 00:05