1. Run Coordinator Report for PVDIS (E08-011)
Yi Qiang
Duke University
Nov 11, 2009
Good day, everyone…
My name is Yi Qiang. I’m from Duke University …
Today, I will talk about the Transverse momentum-dependent structure of the nucleon.
11/10/2009
Hall A RC Report

2. Current status Detectors and DAQ are pretty much ready
Took some production data with R-HRS
Cryogenic works ongoing
Compton suffers high background rates
Left dipole magnet is down
11/10/2009
Hall A RC Report

3. Daily Report Nov 3, Tue, 2009 Nov 4, Wed, 2009
Finished detector installation
Beam tuning to the Hall
Nov 4, Wed, 2009
Compton tuning
PITA scan
Moller commissioning
Target cool down and detector/DAQ work
Beam to the Hall
11/10/2009
Hall A RC Report

4. Daily Report Nov 5, Thu, 2009 Bull’s eye scan and raster adjustment
Left detector gain-matching
Work on right HRS Q2
Commissioned cryo-target, 85uA on target
LUMI HV adjustment for high current
11/10/2009
Hall A RC Report

5. Daily Report Nov 6, Fri, 2009 Q2 measurement with L-HRS
Boiling test on LD2 target
Access to fix HRS Q2
Moller measurement: 87.4%
11/10/2009
Hall A RC Report

6. Daily Report Nov 7, Sat, 2009 Optics runs Access to PVDIS DAQ work
Target position scan: found bottom wall
Magnet Tripped due to cryo fluctuation then recovered
Continue PVDIS DAQ tune, ready for production
11/10/2009
Hall A RC Report

7. Daily Report Nov 8, Sun, 2009 Another sets of Optics run
Magnet tripped again, right HRS recovered
First production with R-HRS and 100 uA beam
An access to fix R-HRS helicity signal
Continue production
Compton tuning
Magnet tripped …
Access for more R-HRS DAQ works
11/10/2009
Hall A RC Report

8. Daily Report Nov 9, Mon, 2009 Nov 10, Tue 2009
Production with R-HRS only
Access to Magnet and Cryo works
Compton tuning, background still high
Target aperture scan, pretty well centered
Nov 10, Tue 2009
Production with 90 uA and R-HRS
Magnets down one more time …
Null vertical spin in injector
Magnet/Cryo works ongoing …
11/10/2009
Hall A RC Report

9. Pending works Compton tuning tomorrow (Wednesday) Moller measurement
Inject study for future Moller systematic measurement. Needs to be arranged with Hall B since it’s destructive to Hall B.
More tuning of detectors and DAQ
Cryo and magnets
Production!!!!!
11/10/2009
Hall A RC Report