Difference between revisions of "GlueX Start Counter Meeting, December 13, 2012"
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* '''FIU''': | * '''FIU''': | ||
* '''JLab''': | * '''JLab''': | ||
+ | start counter meeting notes | ||
+ | 12/13/12 | ||
+ | |||
+ | st-2 will be coming back to fiu | ||
+ | |||
+ | we have discriminators to send to FIU | ||
+ | |||
+ | coda stuff everyting setup trigger supervisor | ||
+ | up and running | ||
+ | pulser generator, triggers | ||
+ | get read-out list for adc's and tdc | ||
+ | sent model number to david abbott | ||
+ | /site/coda/3.0 | ||
+ | |||
+ | yesterday, conversation with chuck hurlburt | ||
+ | chief engieer at eljen | ||
+ | reviewed geometry | ||
+ | discussed types of heating methods | ||
+ | consitderin long and thin | ||
+ | try localized infra-red heading, al foil to cover non heated areasd | ||
+ | support on a form polished aluminiumn | ||
+ | try for minimum heat to bend, 90 degres farenheit | ||
+ | they think it would be easy, | ||
+ | they bend and then ship to Mcneal | ||
+ | previous batch, mcneal removed tape to heat | ||
+ | when machining protection not present in bend region | ||
+ | elgen wil re-apply potective tape | ||
+ | mcneal | ||
+ | 177$ each for batch of 5 with diamond edge milling | ||
+ | if elgen bends, no need for diamond edge | ||
+ | eugene: can we leafe the tape on | ||
+ | the gap needed is a wavelength | ||
+ | |||
+ | found a clas new start counter paper | ||
+ | interesting things | ||
+ | contact with Youri, on how he assembled | ||
+ | internal support structure | ||
+ | |||
+ | tests with wrapping materials | ||
+ | plan for 2 micron aluminum coated mylar | ||
+ | will try aluminum foil | ||
+ | in past perhaps bad results from wrappitnn too lightlyl with mylar | ||
+ | |||
+ | chuck eugene beni puneet mark | ||
+ | eric | ||
+ | |||
+ | each paddle light tight, wrap each paddle | ||
+ | black tedlar, at jlab, beni will give some to puneet | ||
+ | |||
+ | finished classes | ||
+ | |||
+ | looking at finalized geometry changed, width increased | ||
+ | chuck will review | ||
+ | discussed with c & werner | ||
+ | |||
+ | foam cone assembly: would like not stp but, vxf or dwg | ||
+ | |||
+ | SiPM, amplitude from the counter, amplification of read-out depends on this | ||
+ | we will need amplitude for time-walk correcrtion |
Revision as of 14:27, 14 December 2012
GlueX Start Counter Meeting
Thursday, December 13, 2012
10 am EDT
JLab: CEBAF Center F326/327
Contents
Agenda
- Announcements
- Review minutes from previous meeting
- Counter Construction
- SiPM read-out status
- Light collection study status
- Contract
Communication Information
Video Conferencing
- ESNet: 8542553
- EVO:
- Direct meeting link
- Phone Bridge ID: 13 2615
Telephone and Desktop Sharing
To connect via telephone:
To view the shared desktop:
Slides
Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2012-4Q
on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2012-4Q/ .
Minutes
Present:
- FIU:
- JLab:
start counter meeting notes 12/13/12
st-2 will be coming back to fiu
we have discriminators to send to FIU
coda stuff everyting setup trigger supervisor up and running pulser generator, triggers get read-out list for adc's and tdc sent model number to david abbott /site/coda/3.0
yesterday, conversation with chuck hurlburt chief engieer at eljen reviewed geometry discussed types of heating methods consitderin long and thin try localized infra-red heading, al foil to cover non heated areasd support on a form polished aluminiumn try for minimum heat to bend, 90 degres farenheit they think it would be easy, they bend and then ship to Mcneal previous batch, mcneal removed tape to heat when machining protection not present in bend region elgen wil re-apply potective tape mcneal 177$ each for batch of 5 with diamond edge milling if elgen bends, no need for diamond edge eugene: can we leafe the tape on the gap needed is a wavelength
found a clas new start counter paper interesting things contact with Youri, on how he assembled internal support structure
tests with wrapping materials plan for 2 micron aluminum coated mylar will try aluminum foil in past perhaps bad results from wrappitnn too lightlyl with mylar
chuck eugene beni puneet mark eric
each paddle light tight, wrap each paddle black tedlar, at jlab, beni will give some to puneet
finished classes
looking at finalized geometry changed, width increased chuck will review discussed with c & werner
foam cone assembly: would like not stp but, vxf or dwg
SiPM, amplitude from the counter, amplification of read-out depends on this we will need amplitude for time-walk correcrtion