Difference between revisions of "September 14, 2011 Tracking CDC/FDC"
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# FDC Update [http://wwwold.jlab.org/htbin/PHYSICS/halld/enote112.pl logbook] | # FDC Update [http://wwwold.jlab.org/htbin/PHYSICS/halld/enote112.pl logbook] | ||
# CDC Update | # CDC Update | ||
+ | ## Construction status | ||
## Prototype results with cosmics | ## Prototype results with cosmics | ||
Drift time histogram (for all straws) and expanded about t0 | Drift time histogram (for all straws) and expanded about t0 |
Revision as of 12:17, 14 September 2011
Contents
Meeting Time and Place
Wednesday September 14, 2011 at 11:00am At Jefferson Lab, the meeting will be held in F326
Connections
To connect from the outside, please use ESNET
- ) ESNET: 8542553
- )To connect by telephone, dial:
- You can look up toll-free number at http://www.readytalk.com/intl
- US and Canada: (866)740-1260 (toll free)
- International: (303)248-0285 (toll call)
- enter access code followed by the # sign: 3421244#
Agenda
- Announcements
- Collaboration Meeting
- CDC status talk
- FDC status talk
- Other talks? 125FADC?
- FDC Update logbook
- CDC Update
- Construction status
- Prototype results with cosmics
Drift time histogram (for all straws) and expanded about t0
T0 was taken as the x-intercept of a straight line fitted to the leading edge over 10% to 90% of the maximum value. Here (hit threshold=5sigma) this value is 91.3ns.
50/50 Ar/CO2 results at 2050V
50/50 Ar/CO2 results at 2100V
Looking for afterpulses at 2100V with cosmics:
More details on Improved_timing
Minutes
Participants: Curtis, Naomi, Eugene, Beni, Simon, Dave, Lubomir, Elton, Mark, Tim
Collaboration meeting
In addition to the FDC and CDC construction status talks, Beni would like to make a presentation on the positioning of the FDC modules.
FDC Update
CDC Update
- Straw installation - the remaining Al components arrived and have been checked, cleaned and glued into straws. We expect to finish straw installation in the next few days. After that the CDC will be moved to its horizontal position ready to install the outer hubs and shell. The strips to make the outer hubs are now ready to be glued into the endplates.
- Remaining parts/manufacturing - we had a meeting with Tim and Slava last week to arrange who would purchase or make the remaining CDC parts.
- Naomi presented some recent results with the prototype using improved triggering for cosmics.