Log entry time 23:56:34 on November 5,2007

Entry number 212810

SWING shift / O. Hansen (SL), G. Kumbartzki (TO), Z. Ye (3rd)

============================================================



16:00  Start shift with beam being restored after ~2hr downtime.

       Set up for pL = pR = 698.985 MeV/c. LH2+Pb target.

       We later discover that the BPMB Y position was off (-0.5mm)

       because the orbit lock was not engaged.

16:20  Start pR -> 651.627 MeV/c.

16:50  Discovered orbit lock problem. Asked MCC to correct. Beam

       position is within spec from this point on.

16:58  Start pR -> 566.465 MeV/c.

17:45  Beam off for "15-20 minutes" to bring Hall C up.

       Start pR -> 492.433 MeV/c.

18:10  Moving target to 15cm LH2 to investigate strange asymmetry of

       raster pattern seen with Pb target in some of today's runs.

18:36  Beam back. 50uA on 15cm LH2 target.

19:00  Target back to Pb+LH2

19:15  pR -> 428.08 MeV/c

19:35  Beam gone for Hall B tuning.

19:43  Beam returns.

20:20  After final right arm data taking on Pb, set back pR = 698.895.

       Cycle HRS-R Q2 and Q3.

20:35  Finished with Pb target. Moving target to 15cm LH2. HRS-L to 

       pL = 698.895 MeV/c. Cycling Q2/3.

20:52  Start data taking on LH2.

21:05  pR -> 651.627 MeV/c

21:35  HRS-R dipole appears to have gone into safety shutdown. It will

       probably take hours to restart it. We don't expect more right

       arm data for this shift.

23:05-23:30 various attempts to restart HRSR dipole, finally

       successful.

23:50  End data taking on LH2. Moving back to pL = pR = 651.627 MeV/c

       to do the remaining targets. Cycling HRSL Q2/Q3.



Left HRS

--------

Pb foils+LH2 target



16:12-16:18  Run 2004  25uA   698.9 MeV

16:24-16:27  Run 2005  25uA   651.6 MeV

16:27-16:28  Run 2006  10uA   "

16:34-16:36  Run 2007       -junk

16:36-16:41  Run 2008  10uA -rate too low

16:41-16:47  Run 2009  25uA   607.6 MeV

16:54-17:00  Run 2010  25uA   566.5 MeV

17:04-17:09  Run 2011  25uA   528.2 MeV

17:14-17:20  Run 2012  12uA   492.4 MeV

17:24-17:30  Run 2013  10uA   459.1 MeV

17:40-17:45  Run 2014  31uA   428.1 MeV

19:05-19:12  Run 2017  13uA   399.1 MeV

19:18-19:27  Run 2018  13uA   361.1 MeV

19:28-19:30  Run 2019  13uA -junk

19:31-19:36  Run 2020  13uA   326.7 MeV

19:48-19:54  Run 2021  7.3uA  "

20:00-20:06  Run 2022  7.3uA  295.6 MeV

20:15-20:20  Run 2023  7.3uA  267.5 NeV

20:28-20:33  Run 2024  7.3uA  242.0 MeV



15cm LH2 target



18:49-18:50  Run 2015  51uA   399.1 MeV -high DT

18:53-18:58  Run 2016  51uA   "

20:53-21:01  Run 2025  21uA   698.9 MeV

21:10-21:16  Run 2026  7.8uA  651.6 MeV

21:22-21:28  Run 2027  41uA   607.6 MeV

21:34-21:43  Run 2028  41uA   566.5 MeV

21:43-21:49  Run 2029  41uA   "

22:00-22:06  Run 2030  41uA   528.2 MeV

22:11-22:17  Run 2031  21uA   492.4 MeV

22:23-22:31  Run 2032  11uA   459.1 MeV

22:34-22:41  Run 2033  11uA   428.1 MeV

22:46-22:52  Run 2034  11uA   399.1 MeV (oops - duplicates 2015/16)

23:14-23:21  Run 2035  11uA   361.1 MeV

23:29-23:35  Run 2036  11uA   326.7 MeV

23:44-23:50  Run 2037  11uA   295.6 MeV





Right HRS

---------

Pb foils+LH2 target



16:10-16:18  Run 20583  25uA   698.9 MeV

16:53-16:57  Run 20584  25uA   651.6 MeV

17:34-16:36  Run 20585         566.5 MeV

17:39-17:45  Run 20586  31uA   566.5 MeV

19:05-19:12  Run 20589  13uA   492.4 MeV

20:08-20:14  Run 20590  7.3uA  428.1 MeV



15cm LH2 target



18:48-18:50  Run 20587  51uA -junk

18:53-18:58  Run 20588  51uA   492.4 MeV

20:57-21:04  Run 20591  21uA

21:35-       HRSR dipole trouble