Difference between revisions of "Dec 4, 2014 Calorimetry"

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# Preparations for beam: [https://accweb.acc.jlab.org/hco Checklists], [https://hdops.jlab.org/wiki/index.php/Accessing_Onsite_Webpages_From_Offsite Accessing Onsite Webpages From Offsite]
 
# Preparations for beam: [https://accweb.acc.jlab.org/hco Checklists], [https://hdops.jlab.org/wiki/index.php/Accessing_Onsite_Webpages_From_Offsite Accessing Onsite Webpages From Offsite]
 
# Offline Analysis Tools. Note these are linked off the main GlueX wiki page (right side)
 
# Offline Analysis Tools. Note these are linked off the main GlueX wiki page (right side)
 +
## Elton pointed out that there are many plots available online about the ongoing runs (see below)
 +
## Matt noted that if the run information/run condition information was better organized it would help everyone trying to access the data. He noted that in CLEO a standard web form was filled out every run by the operator (many entries automatically) and provided much of the information that is needed. We will pass on this suggestion.
 
## [http://www.jlab.org/Hall-D/test/RunInfo/ Run Info]
 
## [http://www.jlab.org/Hall-D/test/RunInfo/ Run Info]
 
## [https://halldweb1.jlab.org/cgi-bin/data_monitoring/run_conditions.pl Run Conditions Tables]
 
## [https://halldweb1.jlab.org/cgi-bin/data_monitoring/run_conditions.pl Run Conditions Tables]
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## [https://halldweb1.jlab.org/cgi-bin/data_monitoring/monitoring/timeSeries.py Time Series]
 
## [https://halldweb1.jlab.org/cgi-bin/data_monitoring/monitoring/timeSeries.py Time Series]
 
# FCAL [https://logbooks.jlab.org/book/hdfcal HDFCAL log book]
 
# FCAL [https://logbooks.jlab.org/book/hdfcal HDFCAL log book]
 +
## A bug was introduced on Nov 24 that affected Flash 250 data. Matt worked with David to find the bug and a fix was checked in yesterday that fixed the problem.
 +
## Single-hit channels (Manuel)
 +
##* See [https://logbooks.jlab.org/entry/3310424  Log entry]
 +
##* Selected events with one very large signal (>900 counts) and no others greater than 60 counts. Plotted their distribution. Some channels stand out. Lowered HV, which solved the problem for some but not all. Remaining hot channels are removed from the trigger.
 +
##* Elton: It appears that the hot channels appear only with beam. Was it due to discharges after charging up of the glass?  Manuel: Do not find them if there is no beam or light injected into detector. Checking the response under non-beam conditions may prove useful.
 +
##* Matt: Noted that single-cell clusters are included in the analysis, but do not seem to change the distributions qualitatively.
 +
##* Question came up regarding whether Hdview2 displays hits that have a ped=0 (i.e. failures of the time extraction algorithm). [Note Later: Matt checked the FCAL factory and verified that these hits are not passed on for display (as required).
 +
## Pedestal Study (Mark) See [https://logbooks.jlab.org/entry/3310131 Log 3310131]
 
## [[Media:Fcal_monitor_led.pdf| FCAL  Monitoring Plots]] (Matt)
 
## [[Media:Fcal_monitor_led.pdf| FCAL  Monitoring Plots]] (Matt)
 
# BCAL [https://logbooks.jlab.org/book/hdbcal HDBCAL log book]
 
# BCAL [https://logbooks.jlab.org/book/hdbcal HDBCAL log book]

Revision as of 14:27, 4 December 2014

Video Conferencing Information

Meeting Time: 11:00 a.m.

  1. To join via a Web Browser, go to the page [1] https://bluejeans.com/907185247.
  2. To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 907185247.
  3. To join via phone, use one of the following numbers and the Conference ID: 907185247.
    • 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. Unmuting on a computer is trivial as there is a microphone button than can be clicked.
  5. More information on connecting to bluejeans is available.

Participant Direct Lines

  • JLab Phone: in CC F326 is 757-269-6460 (usual room)
  • JLab Phone in CC L207 is 757-269-7084
  • Phone in the Regina Video-conference Suite is 306-585-4204
  • Athens Phone: in Christina's office is 011-30-210-727-6947

Action Items

  1. Add iron shields to top cosmic-ray counters (Elton)
  2. Check into procedure for new MOUs (Elton)
  3. Check variation of dark hits in data as a function of layer. Provide feedback about pedestals to Will (Mark)
  4. Provide initial calibration constants from cosmics for data base (Andrei)

References

  1. Calibration with Cosmics (Andrei)
  2. Spectra from Available Cosmic Runs (Andrei)

Tentative Agenda

  1. Announcements
  2. Action Items
  3. Preparations for beam: Checklists, Accessing Onsite Webpages From Offsite
  4. Offline Analysis Tools. Note these are linked off the main GlueX wiki page (right side)
    1. Run Info
    2. Run Conditions Tables
    3. Plot Browser
    4. Run Browser
    5. Time Series
  5. FCAL HDFCAL log book
    1. FCAL Monitoring Plots (Matt)
  6. BCAL HDBCAL log book
    1. BCAL_analysis_update (Will)
    2. Update on pedestal tracking (Tegan)
  7. Reconstruction and Simulation
  8. Calibration
  9. Any other business

Minutes

Attendees: Elton, Manuel, Will, Mark, Adesh (JLab); Will (CMU); Matt (IU); Zisis, Andrei (UofR), Justin (MIT); Christina, George (Athens)

  1. Announcements
  2. Action Items
  3. Preparations for beam: Checklists, Accessing Onsite Webpages From Offsite
  4. Offline Analysis Tools. Note these are linked off the main GlueX wiki page (right side)
    1. Elton pointed out that there are many plots available online about the ongoing runs (see below)
    2. Matt noted that if the run information/run condition information was better organized it would help everyone trying to access the data. He noted that in CLEO a standard web form was filled out every run by the operator (many entries automatically) and provided much of the information that is needed. We will pass on this suggestion.
    3. Run Info
    4. Run Conditions Tables
    5. Plot Browser
    6. Run Browser
    7. Time Series
  5. FCAL HDFCAL log book
    1. A bug was introduced on Nov 24 that affected Flash 250 data. Matt worked with David to find the bug and a fix was checked in yesterday that fixed the problem.
    2. Single-hit channels (Manuel)
      • See Log entry
      • Selected events with one very large signal (>900 counts) and no others greater than 60 counts. Plotted their distribution. Some channels stand out. Lowered HV, which solved the problem for some but not all. Remaining hot channels are removed from the trigger.
      • Elton: It appears that the hot channels appear only with beam. Was it due to discharges after charging up of the glass? Manuel: Do not find them if there is no beam or light injected into detector. Checking the response under non-beam conditions may prove useful.
      • Matt: Noted that single-cell clusters are included in the analysis, but do not seem to change the distributions qualitatively.
      • Question came up regarding whether Hdview2 displays hits that have a ped=0 (i.e. failures of the time extraction algorithm). [Note Later: Matt checked the FCAL factory and verified that these hits are not passed on for display (as required).
    3. Pedestal Study (Mark) See Log 3310131
    4. FCAL Monitoring Plots (Matt)
  6. BCAL HDBCAL log book
    1. BCAL_analysis_update (Will)
    2. Update on pedestal tracking (Tegan)
  7. Reconstruction and Simulation
  8. Calibration
  9. Any other business
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