Difference between revisions of "Minutes-2-12-2015"

From GlueXWiki
Jump to: navigation, search
(→‎Agenda)
Line 24: Line 24:
 
= Minutes =
 
= Minutes =
  
−
Participants: Curtis, Naomi (CMU), Beni, Simon, Eugene, Dave, Fernando, Chris, Nick, Vlad, and Lubomir (JLab).
+
Participants: Naomi (CMU) Eugene, Tim, Dave, Fernando, Mike, Chris, Nick, Simon, Beni, and Lubomir (JLab).
  
−
== Gas puzzle ==
+
== Gas issues ==
  
−
- CO2 sensor sent to the company for repair; will have it next week. Initially, it will be connected to a laptop (serial to USB) with the GASLAB software. For the spring run we want to connect it to a terminal server, but then we need software to put the information in epics (Hovanes).
+
- We had long discussions what to do with the CDC leakage. Everybody agrees that CDC can't be operated like this and the leak has to be fixed. Different proposals: start removing the HVB cards and check with the sniffer the holes at the cheese plate (Beni, Nick, Fernando), check for the leak at the downstream 
−
 
+
−
- Using Garfield, Lubomir compared the gains in the CDC with the two wire diameters, 17.8 um used in the prototype and 20 um used in the CDC. Plot of the response of simulated 55Fe source is linked above - about 70% increase in the gain from 20 to 17.8 um wire, when using Ar/CO2/propanol 58/42/0.33 gas mixture. Naomi: with the standard gas 50/50 they have seen just 10% increase. Lubomir will do simulations with the standard gas, as well.
+
−
 
+
−
- Gain measurements with 55Fe source will be done with both, the FDC spare package (standard 40/60 gas) and the FDC in the Hall with whatever gas is there, to make sure we understand the gas mixtures and the Garfield simulations. The spare package in EEL126 is being flushed with gas since last Friday. Beni is recovering the DAQ we used in 126, but there are some issues yet related to the new firmware.
+
  
 
== CDC update ==
 
== CDC update ==

Revision as of 17:03, 13 February 2015

February 12, 2015 FDC+CDC meeting

Connection

  1. Instructions for Bluejeans meeting connection
  2. FDC meeting ID: 290664653
  3. To join via a Web Browser, go to the page [1] https://bluejeans.com/290664653.

Agenda

  1. Gas issues
  2. Electronics (Fernando, Cody)
  3. Engineering (Dave)
  4. CDC update Resolution Vs. Drift time 1200A(Mike)
  5. FDC update (Lubomir)
  6. Other


Retrieved from "https://halldweb1.jlab.org/wiki/index.php?title=Minutes-2-12-2015&oldid=63703"