Difference between revisions of "August 27, 2014 Calibration"

From GlueXWiki
Jump to: navigation, search
(Agenda)
Line 67: Line 67:
 
* What is the lowest solenoid current that we can run at? How will a low solenoid current affect FDC alignment?
 
* What is the lowest solenoid current that we can run at? How will a low solenoid current affect FDC alignment?
 
* Study FCAL & BCAL trigger thresholds
 
* Study FCAL & BCAL trigger thresholds
 +
 +
== Minutes ==
 +
 +
Attending: Sean (CMU); Naomi, Curtis (CMU); Matt S., John Z. (IU); Simon, Lubomir, Beni, Mark I., Mark D., Eugene (JLab); Zisis, Tegan (Regina); Justin (MIT)
 +
 +
=== Announcements ===
 +
 +
Curtis mentioned that in the latest meetings with the accelerator group, it sounds like there will be the possibility of taking additional data on evenings and weekends in November and December, beyond the 3 weeks we have been planning for.  Therefore, we should be planning to make as many calibrations as possible with the available data.
 +
 +
=== CDC ===
 +
 +
#* [[CDC_commissioning_plan|CDC]]
 +
#* [http://www.jlab.org/Hall-D/detector/fdc/commissioning/ComPlan.pdf FDC]
 +
#* [https://halldweb1.jlab.org/wiki/images/e/e8/FCAL-calib-Firstdraft.pdf FCAL]
 +
#* BCAL: DocDB documents [http://argus.phys.uregina.ca/cgi-bin/private/DocDB/ShowDocument?docid=2361 2361] and [http://argus.phys.uregina.ca/cgi-bin/private/DocDB/ShowDocument?docid=2379 2379] need updating together with [https://hdops.jlab.org/wiki/index.php/Barrel_Calorimeter_Commissioning Wiki info], and experience from this summer's cosmics and LED running, and MC simulations
 +
#* [https://halldweb1.jlab.org/talks/2014-3Q/TOF_commissioning_data.pdf TOF]
 +
#* [[Draft Start Counter Commissioning Plan|Start Counter]]
 +
#* Trigger
 +
# [[Fall 2014 Commissioning Simulations]]
 +
#* Status Update

Revision as of 18:23, 27 August 2014

GlueX Calibration Meeting
Wednesday, August 27, 2014
11:00 am, EDT
JLab: CEBAF Center, F326

Connection Using Bluejeans

  1. To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 630804895.
  2. To join via a Web Browser, go to the page [1] https://bluejeans.com/630804895.
  3. To join via phone, use one of the following numbers and the Conference ID: 630804895
    • US or Canada: +1 408 740 7256 or
    • US or Canada: +1 888 240 2560
  4. Upon connection all microphones are automatically muted. To unmute your mike on a Polycom or equivalent unit, enter *4
  5. More information on connecting to bluejeans is available.

Agenda

  1. Announcements
  2. Commissioning Planning
  3. Fall 2014 Commissioning Simulations
    • Status Update
      • Commissioning target geometry in branch hdds-commissioning

Commissioning target.png Commissioning target closeup.png

    • Number of Events & Final States
    • EM Background Simulations (Sean)
    • EM Background Simulations (Simon)
      • Mockup of Level 1 trigger:
        • Version A: (Ebcal + 4.0 Efcal)>=2.0 && Ebcal>0.200 && Efcal>0.030
        • Version B: (Ebcal + 4.0 Efcal)>=2.0 && Ebcal>0.030 && Efcal>0.030 && N(start counter hits)>0
        • Version C: Efcal>=0.250
        • Version D: Efcal>=0.250 && N(TOF hits)>0
      • Coherent bremsstrahlung generator: 10 GeV electron beam, 5 mm collimator, Emin=1.2 MeV.
   Events |                   Trigger               |           Events with segments
          |         A         B         C         D |          A         B         C         D

    97172 |       169        70        44        44 |        122        67        29        29 

Fraction: | 0.0017 0.0007 0.0005 0.0005 | 0.0013 0.0007 0.0003 0.0003


  1. Action Items
  2. AOT

Action Items

  • Update desired event counts (all)
  • Tag new sim-recon version (Mark I.)
  • Update geometry for commissioning running (Simon)
  • Obtain new constants for EM background simulation & magnetic field (Sean)
  • Update expected photoproduction event rate calculations
  • Decide number of events & conditions to simulate
  • Run simulations
  • What is the lowest solenoid current that we can run at? How will a low solenoid current affect FDC alignment?
  • Study FCAL & BCAL trigger thresholds

Minutes

Attending: Sean (CMU); Naomi, Curtis (CMU); Matt S., John Z. (IU); Simon, Lubomir, Beni, Mark I., Mark D., Eugene (JLab); Zisis, Tegan (Regina); Justin (MIT)

Announcements

Curtis mentioned that in the latest meetings with the accelerator group, it sounds like there will be the possibility of taking additional data on evenings and weekends in November and December, beyond the 3 weeks we have been planning for. Therefore, we should be planning to make as many calibrations as possible with the available data.

CDC

  1. Fall 2014 Commissioning Simulations
    • Status Update