Difference between revisions of "Jan 25, 2011 Calibration/Monitoring"

From GlueXWiki
Jump to: navigation, search
(Background information)
(Action Items)
Line 11: Line 11:
 
= Action Items =
 
= Action Items =
  
# Consider dual level settings on LEDs, one to fire near SiPM, the other to fire the far pmt (perhaps overflowing the near SiPM)
+
# Why was the dynamic range of the APD tested over 20-450?  Where there intrinsic limitations? Can it be extended to form a ratio of 400?
# Give (approximate) power consumption for LED calibration board
+
# Can George calculate the % deviation from linearity on his plot? 
# Ask George if dynamic range plot for points on LED plot were due to intrinsic limitations.
+
# Can George verify that the two-setting operation (low bias for near, high bias for far SiPM flashing) is feasible? 
 +
# What is the approximate power dissipation for each board? (Just LPM since LPCM will be further away).
 +
# Zisis will bounce another idea for the one-setting operation mode.
 +
# USM should be contacted to send more LGs to Athens (and eventually Regina).
  
 
= Tentative Agenda =
 
= Tentative Agenda =

Revision as of 16:48, 24 January 2011

Teleconference Time: 09:00 CST (Regina) / 10:00 EST / 17:00 GMT+2 (Athens)

  • ESNET preferred, EVO as a backup

Background information

Action Items

  1. Why was the dynamic range of the APD tested over 20-450? Where there intrinsic limitations? Can it be extended to form a ratio of 400?
  2. Can George calculate the % deviation from linearity on his plot?
  3. Can George verify that the two-setting operation (low bias for near, high bias for far SiPM flashing) is feasible?
  4. What is the approximate power dissipation for each board? (Just LPM since LPCM will be further away).
  5. Zisis will bounce another idea for the one-setting operation mode.
  6. USM should be contacted to send more LGs to Athens (and eventually Regina).

Tentative Agenda

  1. Review goals/objectives of Monitoring system and past discussions.
  2. George Voulgaris' slides: Media:AnswersaboutLED.pdf
  3. Discuss Matt's suggestion: groove in light guides, radial fibres. (sent as email)
  4. Summarize info, prepare recommendations and discuss it in Working Group to reach conclusion and proceed with Athens Construction MOU (decision by May 2011).

Minutes

Attendees: Christina (Athens), Elton (JLab), Zisis (Regina)