[Halld-jlab] Hall D Staff Meeting Notes, October 5, 2015

[Mark Ito]

Folks,

Find the notes below and at:

https://halldweb.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_October_5,_2015

   -- Mark
  ______________________________


  Private:Hall D Staff Meeting, October 5, 2015

 From GlueXWiki

Present: Eugene Chudakov (chair), Mark Dalton, Alexandre Deur, Hovanes 
Egiyan, Sergey Furletov, Mark Ito, David Lawrence, Paul Mattione, 
Lubomir Pentchev, Patrizia Rossi, Elton Smith, Sascha Somov, Justin 
Stevens, Simon Taylor, Tim Whitlatch, Beni Zihlmann


    Announcements, Eugene

  * All-Hands meeting was held last week.
  * LDRD presentation:
      o 2 types:
         1. accelerator projects on electron cooling
         2. EIC physics from Christian Weiss, Sergey and Eugene working
            on charm production
  * long-range plan meeting, Thu and Fri.
      o Don Geeseman will present plan
  * vacation donation program ran (briefly)
  * physics discussion on Test Lab space, no big Hall D items (DIRC will
    go directly to Hall)


    Solenoid, Tim

  * all 4 chimneys open
  * plumbing/thermal-siphon evaluated
  * planned mods fit into the space
  * bench welds 3/8th done
  * all but one piece of tubing fit checked
  * tack welding to be done
  * coils look good
      o MLI beat up for one coil
      o coil 4: some water seen, no unusual
      o ice balls a fear, no evidence so far
  * start cooldown Dec. 1; schedule holding
  * work to do, 6 weeks
      o welding
      o leak checking
      o MLI: wrapping it back up
      o thermal shields


    Run Preparations, Alexandre

  * meeting started, two so far
      o A., Curtis, Elton, Eugene
  * Readiness meetings, start after collab. meeting, weekly
  * need all equipment to work for this run
      o except solenoid and cryotarget
  * hot check out to start 10 days before start of run
  * schedule
      o machine starts Nov. 9
      o no beam for Hall D until after Thanksgiving
      o uncertainties: may get beam earlier, not at all
      o hoping for 2 weeks
  * run conditions:
      o no cryotarget, 100 micron foil, plastic target
      o 5 mm collimator
  * major task: fast feedback commissioning
      o hardware and software should be ready this time
      o need high current
      o will start with beam to tagger dump, no radiator
      o active collimator role tested later


    DIRC Review, Justin

  * sent out TDR 2 seeks ago
  * submitted to committee now, they will have 2 weeks
  * budget and schedule converging with Rolf and Patrizia
  * program management plan close to done
  * Wed. morning: dry runs, all welcome
  * review next week
  * new collaborators from GSI, some have been helping with DIRC planning


    General Run Preparation

  * no new equipment
  * FCAL, Elton: bases being worked on
  * Chambers, Lubomir: can be turned on for short periods if needed
  * Calorimeters: ready to go otherwise
      o EPICS should be re-enabled on FCAL for continuous monitoring
        capability
  * nitrogen for BCAL still going to solenoid
      o needed there for another 2 weeks
  * magnet cool down takes 3 weeks
  * trigger, Sascha: no worries
  * DAQ, Sergey: testing F125s
      o single crate at 70 kHz
      o all crates at 35 kHz with 50% livetime
  * Online, David: no big changes to online computers


    RF, Paul

  * MO split to 4 crates: tagger, tof, fdc, ps
  * all signals look good but...
      o FDC ROC shows spikes and smearing, will replace F1TDC
  * jitter seen between crates
      o TOF and Tagger OK
      o PS and other 2: too much jitter, about 100 ps, should be 50-80 ps


    New Post-Doc, Eugene

  * applications in, 18 of them
  * to work on DIRC, data analysis

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  * This page was last modified on 6 October 2015, at 15:52.


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