Log entry time 08:16:36 on January 10, 2007

Entry number 130407

• We begin the shift with Beam, and current beam scan going on.
• No usable beam during few hours due to loss in the accelerator. We did the 5 uA study during this problem. we loose about 4 h of production.
  
• IHWP was out.
• loose roc31 (g0inj) so switch on g0full configuration
  

• 00h15 : MCC called, they had a strange beam trip while trying to go to 30 uA.
• 00h20 : MCC cannot deliver the request beam current, they have some loss.
  
• 01h00 : we were trying to get some data a 5 uA but beam was not stable at all and no useable data were taken.
• 01h00 : 47uA, bad halo. We are waiting a call from MCC when they think beam is stable.
• 02h00 : MCC is still working on the problem. We ask 5 uA (beam is stable at this current) to perform cerenkov multiplicity check
• 02h43 : Loss in the accelerator are may be solved. we are done with the 5 uA study and wait for higher curent (45uA) to continue.
  
• 03h00 : MCC shutdown the fast-feeback to improve loss (see  this)
  
• 04h00 : ask for 35uA, herbert measured the anode current of cer PMTs, I checked the MaJ threshold for octant 2 (see this)
• 04h50 : put coil modulation ON, MCC has been inform. Try to start run 33177, roc31 crached. unabled to get it back. We switch to g0full
• 05h15: herbert drecrease the HV for octant 5 by 50V to setup the anode current to an acceptable level, and bring octant 5 to around the same rate than the ohers octants
• 05h16: start run 33178
• 06h40: run 33178 does not want to end. I kill coda again and relaunch.
• 07h30: Problem with CODA, run does not end correctly. I tried to reboot the TS but a error occur at boot. called fatiha.
• 07h50: MCC called they have a cryo problem in south linac. No beam for a while
  

• 33163: Production Run 45 uA. (part of beam current scan, beam unstable).
  
• 33164: 5 uA run. cerenkov trigger = mult 2 normal one).
• 33165: 5 uA run. cerenkov trigger = mult 3. beam not at 5 uA during all time and not stable. Not usable run
• 33166: 5 uA run. cerenkov trigger = mult 3. Part of the run was at 20 uA.
• 33167: junk
  
• 33168: junk no events
  
• 33169: 5 uA run. Cerenkov trigger = mult 3.
• 33170: 5 uA run. Cerenkov trigger = mult 4.
• 33171: 5 uA run. Cerenkov trigger = mult 2.
• 33172: 45 uA run.  Halo is very high. from 2000 it decrease to 260
• 33173: 45 uA run.  Halo is high. about 260
• 33174: 35 uA run.  Halo about 70.
• 33175: 20 uA run.
• 33176: 10 uA run.
  
• 33177: no run roc31 crashed.
• 33178: 35uA production run, after small HV change on cer octant 5
• 33179: Junk, coda crashed.
  
• 33180: 35uA production run.