Dear Colleague,

Update for 970814:

08.00 - 21.00:  Accelerator tuning
21.00 - 24.00:  FPP production -85 MeV/c

The accelerator came up in fits and starts, including
a lot of hardware problems.  By 21.00, 70 uA was 
available.  A series of FPP trips resulted in the current
being reduced to 50 uA for steady-state operation.
About three hours of production running occurred by
midnight.

Kevin

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# K.G. Fissum                    phone:  (757) 269 7325 #
# MS 16B, Room 16-125            fax:    (757) 269 6273 #
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Dear Colleagues,

Update for 970815:

00.00 - 09.00:  FPP production -85 MeV/c
09.00 - 09.30:  tuning
09.30 - 11.20:  shift checks
11.20 - 23.00:  H2O-fall target failed - recover
23.00 - 24.00:  re-enable systems

Nine solid hours of production for the FPP project.
This took their total statistics to 10M I am told.
At 11.20, the H2O-fall target failed - exit window
shredded, and all the water collected in the chamber.
Scot, Mark and Ed scrambled to bring us back up to
speed by 23.00.  At 24.00 all systems were go save
the DAQ.

Kevin

#########################################################
# K.G. Fissum                    phone:  (757) 269 7325 #
# MS 16B, Room 16-125            fax:    (757) 269 6273 #
# Jefferson Laboratory           pager:  (757) 680 2036 #
# 12000 Jefferson Avenue                                #
# Newport News, VA 23606 USA                            #
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Dear Colleagues,

Update for 970816:

00.00 - 01.50:  recover from dead disk
01.50 - 14.30:  FPP production -85 MeV/c
16.00 - 17.00:  no beam
17.00 - 18.00:  FPP production -85 MeV/c
18.00 - 24.00:  change theta_h, theta_e

After "recovering" from a dead disk on adaqs1 (see
Michael's email for an explanation), we took FPP
data sporadically for something like 13 hours.  This
took their statistics to roughly 13.5 M.  At 18.00,
we began to change the spectrometer configuration
in preparation for E89-003B.  At midnight we were
still fighting with HRSe.

Kevin

#########################################################
# K.G. Fissum                    phone:  (757) 269 7325 #
# MS 16B, Room 16-125            fax:    (757) 269 6273 #
# Jefferson Laboratory           pager:  (757) 680 2036 #
# 12000 Jefferson Avenue                                #
# Newport News, VA 23606 USA                            #
#########################################################
Dear Colleagues,

Update for 970817:

00.00 - 03.30:  change theta_e
03.30 - 09.30:  change e_beam, tuning etc.
09.30 - 13.20:  E89-003B q determination
13.20 - 17.15:  survey HRSh
18.00 - 24.00:  q-vector continued

We finally muscled the HRSe into place by 03.30.  Many,
many things conspired against us.  Thanks to James and Scot
(yet) again.  Tuning to 0.845 GeV proved troublesome, and
we didn't get going again until 09.30.  After four hours
of q-vector determination, we surveyed.  Thanks to Dan
Varnell of the survey for donating his Sunday afternoon
to us.  The q-vector determination continued through
midnight.

Kevin

#########################################################
# K.G. Fissum                    phone:  (757) 269 7325 #
# MS 16B, Room 16-125            fax:    (757) 269 6273 #
# Jefferson Laboratory           pager:  (757) 680 2036 #
# 12000 Jefferson Avenue                                #
# Newport News, VA 23606 USA                            #
#########################################################
Dear Colleagues,

Update for 970818:

00.00 - 03.15:  q-vector continued
03.15 - 07.00:  theta_pq = 0deg
07.00 - 13.10:  investigate radiation in Hall
13.10 - 17.45:  theta_pq = 0deg
17.45 - 19.15:  change HRSh angle to theta_pq = +16deg
19.15 - 22.30:  address ep detector concerns
22.30 - 23.30:  ep
23.30 - 24.00:  theta_pq = +16deg

We finished the q-vector determination and the parallel
kinematics measurement.  Time was spent addressing 
concerns over abnormally high levels of radiation in
the Hall both during the morning and the evening.
The ep group attempted some detector tests.

Regards,

Kevin

#########################################################
# K.G. Fissum                    phone:  (757) 269 7325 #
# MS 16B, Room 16-125            fax:    (757) 269 6273 #
# Jefferson Laboratory           pager:  (757) 680 2036 #
# 12000 Jefferson Avenue                                #
# Newport News, VA 23606 USA                            #
#########################################################
Dear Colleagues,

Update for 970819-970820:

00.00 - 03.30:  limping along, theta_pq = +16deg
03.30 - 12.30:  investigate radiation levels in the Hall
12.30 - 15.00:  limping along, theta_pq = +16deg
15.00 - 16.15:  rested the H2O-fall
16.15 - 24.00:  smooth production, theta_pq = +16deg
00.00 - 07.30:  smooth production, theta_pq = +16deg

After a long and frustrating period of high radiation
levels in the Hall, it was decided to "rest" the 
H2O-fall.  After this, we obtained about 16 hours of
smooth production running at theta_pq = +16deg, 
effectively doubling our statistics at this point.

So conclude the first two EXPINT experiments.  
Thanx to everyone who participated, especially to
those who dropped everything and pitched in at
such short notice for E89003B.

Regards,

Kevin

#########################################################
# K.G. Fissum                    phone:  (757) 269 7325 #
# MS 16B, Room 16-125            fax:    (757) 269 6273 #
# Jefferson Laboratory           pager:  (757) 680 2036 #
# 12000 Jefferson Avenue                                #
# Newport News, VA 23606 USA                            #
#########################################################