Difference between revisions of "Hardware changes"
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==Hardware, configuration changes during Q-Weak running== | ==Hardware, configuration changes during Q-Weak running== | ||
| − | November 5, 2010: First photon detector removed: ([https://hallcweb.jlab.org/hclog/1011_archive/101105154946.html | + | November 5, 2010: First photon detector removed: ([https://hallcweb.jlab.org/hclog/1011_archive/101105154946.html hclog entry]). The second one must have been installed the same day or shortly thereafter. |
| − | November 19, 2010: Mark added 1 mm of lead in front of the photon detector: ([https://hallcweb.jlab.org/hclog/1011_archive/101119165813.html | + | November 19, 2010: Mark added 1 mm of lead in front of the photon detector: ([https://hallcweb.jlab.org/hclog/1011_archive/101119165813.html hclog entry]). |
| − | November 29, 2010: Busted laser safety box: ([https://hallcweb.jlab.org/hclog/1012_archive/101208141812.html | + | November 29, 2010: Busted laser safety box: ([https://hallcweb.jlab.org/hclog/1012_archive/101208141812.html hclog entry]). |
| − | December 7, 2010: Replaced Arshak's paddle with Moller scint. ([https://hallcweb.jlab.org/hclog/1012_archive/101207223030.html | + | December 7, 2010: Replaced Arshak's paddle with Moller scint. ([https://hallcweb.jlab.org/hclog/1012_archive/101207223030.html hclog entry]). I believe a second scintillator was hooked up to channel 11 at the same time. |
| − | December 8, 2010: Locked cavity in opposite laser helicity ([https://hallcweb.jlab.org/hclog/1012_archive/101208141812.html | + | December 8, 2010: Locked cavity in opposite laser helicity ([https://hallcweb.jlab.org/hclog/1012_archive/101208141812.html hclog]). Can't find log entry about restoration of original helicity - I'm pretty sure it was the next day. |
| − | December 9, 2010: Removed gamma-det. HV from patch ([https://hallcweb.jlab.org/hclog/1012_archive/101209154450.html | + | December 9, 2010: Removed gamma-det. HV from patch ([https://hallcweb.jlab.org/hclog/1012_archive/101209154450.html hclog entry]) |
| − | January 6, | + | January 6, 2011: Placed 2 mm lead in front of photon detector: ([https://hallcweb.jlab.org/hclog/1101_archive/110106160035.html hclog entry]). |
| − | January 18, 2011: Reomved 1 mm lead from photon detector, now just 1 mm: ([https://hallcweb.jlab.org/hclog/1101_archive/110106160035.html | + | January 13, 2011: I checked the passive splitter Mark made ([https://qweak.jlab.org/elog/Photon+Detector/39 elog entry]). Sometime after this, the long delay cable going into the FADC was removed (can't find entry). |
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| + | January 18, 2011: Reomved 1 mm lead from photon detector, now just 1 mm: ([https://hallcweb.jlab.org/hclog/1101_archive/110106160035.html hclog entry]). | ||
Revision as of 11:05, 26 January 2011
Hardware, configuration changes during Q-Weak running
November 5, 2010: First photon detector removed: (hclog entry). The second one must have been installed the same day or shortly thereafter.
November 19, 2010: Mark added 1 mm of lead in front of the photon detector: (hclog entry).
November 29, 2010: Busted laser safety box: (hclog entry).
December 7, 2010: Replaced Arshak's paddle with Moller scint. (hclog entry). I believe a second scintillator was hooked up to channel 11 at the same time.
December 8, 2010: Locked cavity in opposite laser helicity (hclog). Can't find log entry about restoration of original helicity - I'm pretty sure it was the next day.
December 9, 2010: Removed gamma-det. HV from patch (hclog entry)
January 6, 2011: Placed 2 mm lead in front of photon detector: (hclog entry).
January 13, 2011: I checked the passive splitter Mark made (elog entry). Sometime after this, the long delay cable going into the FADC was removed (can't find entry).
January 18, 2011: Reomved 1 mm lead from photon detector, now just 1 mm: (hclog entry).
