<!-- Title: 19:24:03  Mon Jun 26 2006 -->
<!-- Crewchief: Willis+Peter -->
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<pre>Week of 26 June 2006</pre>


<!-- Date: Mon Jun 26 19:44:16 2006 -->
<p>Store 4798 is terminated normally at 0927 hrs. We recorded 2.5 pb-1 at 
   87% efficiency. This store termination was a bit delayed because of 
   Linac H- source problems. Store 4799 starts at 1217 hrs, with an 
   initial luminosity of 106e30. The online CLC luminosity is still low. 
   The beam losses are much better than in the previous two stores, and 
   we start running right away with silicon. The CMX HV (NE wedges 18-19) 
   gave some problems (4% level), but no major problems. 
   At 1938 hrs, we have recorded 1.5 pb-1 at 83% efficiency. 
</p> 
<p>At the 4PM All Experimenters meeting, D0 reported that they 
   have a new solution to their A-layer muon readout problem 
   that induced noise into the calorimeter. This solution allows 
   D0 to run the A-layer muon chamber readout with a larger 
   latency to allow the new cal-track L1 trigger. D0 will need 
   another 2 shift access to implement this -- and next week 
   at the earliest. 
</p>
<!-- Author: Willis+Peter -->


<!-- Date: Tue Jun 27 18:47:01 2006 -->
<p>Store 4799 was terminated normally, but early, at 1601 hrs.    We recorded 3.5 pb-1 at 
   88% efficiency. A pcal11 SMXR lost its brains somewhere in the long run, 
   219121, and that crate was power-cycled and recalibrated at 1043 hrs. 
   The early store termination was for a TeV access to repair an A2 
   dump problem -- an LCW leak in the A2 series shunt module. 
   We went into controlled access at 1621 hrs, and fixed two muon 
   system problems: the CMX NE wedges 18-19 HV distribution was 
   resegmented, and the noisy NW BMU towers problem was <a href= 
'/cgi/elog/elog.pl?nb=2006&action=view&page=440&frame=2&anchor=17:42:09.246'> 
   fixed.</a> Work was also done on the SVT -- new TF++ firmware and 
   new track patterns, on the CLC lower than usual online 
   luminosity from problems reprogramming an CLC ADMEM in b0clc00, 
   on updating the PEM and PHA HV -- new gains, and on hooking up a 
   logic analyzer to the TS to trigger on the problems causing the 
   silicon resonance handbrake to kick in. 
</p>  
<!-- Author: Willis+Peter -->


<!-- Date: Wed Jun 28 18:41:57 2006 -->
<p>Store 4802 starts at 2357 hrs, 27Jun06, with an initial  
   luminosity of 108e30. Our luminosity is still on the high 
   side. The beam losses were low and we started running right 
   away. About an hour into the store, there was probably a 
   beam single event upset in a silicon FIB that took about 
   1.5 hrs to diagnose and fix -- this slowed down data taking 
   a bit. Data taking, though not perfect, went reasonably well 
   as  
   there were only small problems. During the afternoon, we 
   were down for about 1.3 hrs due to beam problems: At 1330 hrs, 
   the luminosity dropped a factor of 2 due most likely to a 
   C4 separator spark, and scraping at 1630 hrs to reduce beam 
   losses at D0 that made their muon chambers unhappy. 
   At 1837 hrs, we recorded 2.8 pb-1 at 79% efficiency. Store 
   4802 is to be terminated at 2100 hrs. D0 is making a 1 hour 
   access to fix a muon chamber problem. We have decided to 
   stay out. 
</p>
<!-- Author: Willis+Peter -->


<!-- Date: Thu Jun 29 16:59:03 2006 -->
<p>Store 4802 was terminated normally at 2108 hrs. We recorded 2.9 pb-1 
   at 80% efficiency. As of 1657 hrs, 28Jun06, the default L3 filter is 
   the SL version. Store 4804 starts at 0119 hrs, with an initial 
   luminosity of 128e30, which is still high due to CLC hardware issues. 
   The first 1.7 hrs of running was a bit shaky -- EVB problems and 
   perhaps some transition effects of starting off with the SL L3 filter. 
   At about 0622 hrs, the solenoid east dry engine dies, leading to the 
   solenoid going <a href= 
'/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=1970&frame=2&anchor=06:22:22'>down.</a> The solenoid slow due was a result of the low liquid He 
   level in the dewar due to the dry engine failure. The dry engine failure 
   seems to have uncovered a problem with the wet engine cold valve. 
   The dry engine and cold valve problems were fixed by about 1000 hrs, and 
   we started making liquid He again, but it will take until 1800 hrs to 
   make enough liquid He to re-energize the solenoid. 
</p> 
<p>The CLC group <a href= 
'/cgi/elog/elog.pl?nb=2006&action=view&page=445&frame=2&anchor=10:35:59.839'> 
   resolved</a> the luminosity hardware issue in the morning 
   during the cryo repairs, and as of  about 1040 hrs, the CLC online 
   luminosity should be "right". We have been exercising the DAQ all day 
   as we wait for the solenoid to come back. Store 4802 will be kept in 
   until the middle of the owl shift. 
</p>  
<!-- Author: Willis+Peter -->


<!-- Date: Fri Jun 30 17:39:10 2006 -->
<p>The CDF solenoid was back up at 1955 hrs, 29Jun06, and we started taking 
   physics data again at 2016 hrs, 29Jun06. Store 4804 was normally terminated 
   at 0803 hrs. Over the past 12 hrs, the data taking efficiency was about 
   82%, and the biggest down times were beam related -- turning off for 
   abort gap scrubbing and abort gap kicker, PAK5, repairs. The shifting 
   of the TeV beam tunes caused increases in AGIGI2 and required changes 
   in the tune by the MCR to reduce. 
</p> 
<p>Store 4805 started at 1056 hrs, with an initial luminosity of 148e30 
   (D0 lum, 137e30). Our luminosity should be okay now. The silicon HV 
   had some problems coming up from what appears to be Si HV GUI <a href= 
 '/cgi/elog/det-system-elog.pl?nb=silicon&action=view&page=307&frame=2&anchor=11:42:31'>problems.</a> We wait for 20 minutes, start without silicon, run 
   for 40 minutes, then re-include the silicon.  After that, running 
  has been very smooth. At 1731 hrs, we recorded 1.9 pb-1 at 80% efficiency. 
</p>  
<!-- Author: Willis+Peter -->


<!-- Date: Mon Jul 3 17:52:21 2006 -->
<p>Weekend Summary: 01-02 July 2006. The running over the weekend was 
   rather smooth. 
<ul> 
<li>Saturday, 01 July 2006: Store 4805 had continued smooth running, with 
    only small problems. At 0737, we went down for 0.5 hrs as the solenoid 
    slow dumped but was caught and recovered. The slow dump was due to low 
    liquid He levels due to wet engine valves being out of adjustment from 
    the cold valve work done on 29Jun06. At 0840 hrs, store 4805 was lost 
    because T:BQ9 pulled an abort due to a controls <a href= 
'http://www-bd.fnal.gov/cgi-mcr/elog.pl?nb=2006&action=view&page=492&anchor=121748'>problem.</a> 
   The abort was clean and we had no problems. For store 4805, we recorded 
   4.4 pb-1 at 86% efficiency. Store 4808 was put in at 1802 hrs, with 
   an initial luminosity of 125e30. We started running fairly well, although 
   the 2nd and 3rd hours of the store had some stop and gos because of a 
   SVT 1.5 GeV track test run, an EVB problem, and a series of solenoid 
   "twilight zone" <a href= 
'/cgi/elog/elog.pl?nb=2006&action=view&page=452&frame=2&anchor=20:18:04.202'> 
   alarms</a> probably from the solenoid NMR being zapped with radiation. 
   After that, running was smooth.</li> 
<li>Sunday, 02 July 2006: Store 4808, for which running was also very    smooth over Sunday,  was terminated normally at 2204 hrs. We recorded 
   4.2 pb-1 at 88% efficiency.</li> 
</p>  
<!-- Author: Willis+Peter -->