ILC - International Linear Collider

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9ma:sept09_studies [2009/06/24 12:10]
9ma created
9ma:sept09_studies [2009/06/24 17:17] (current)
9ma
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 ====== Studies planning for August/September 2009 ====== ====== Studies planning for August/September 2009 ======
 +
 +//FLASH user operation will terminate at 0700 on Monday, August 17th. Following this, there will be a 3-week machine intervention to repair the dump beamline//
 +
 +
 +===== General planning for KW 34-36 =====
 +(Per Katja Honkavaara - 11 June 2009) \\ 
 +
 +__Week 34 (Aug-17 to Aug-23)__
 +  * Tunnel open days and nights for dump repair work
 +\\ 
 +__Week 35 (Aug-24 to Aug-30)__
 +  * Mon-Fri: Tunnel open during day time for dump repair work, closed at night
 +  * The time for closing the tunnel depends on the work in tunnel, tentatively ca. 1900
 +  * Tunnel opened every morning (Tue-Fri) sharply at 0700
 +  * Tunnel closed in the weekend
 +\\ 
 +__Week 36 (Aug-31 to Sep-6)__
 +  * Tunnel open for dump repair work when ever needed (probably at least Mon-Wed daytime)
 +  * Otherwise linac stays at 'stand-by' to start beam operation for the 9mA experiment as soon as the dump repair work is finished
 +\\
 +
 +
 +----
 +
 +__**LLRF preparation for 9 mA run (plus ATCA testing)**__
 +
 +Presently RF/LLRF studies (without beam) are planned for:
 +  - Mon Aug-24 to Thu Aug-27 from 19h evenings to 7h following mornings 
 +  - Fri Aug-27 ca. 19h evening to Mon Aug-31 at 7h morning
 +  - Schedule of LLRF work in these time slots is done by John Carwardine
 +  - We will also increase the RF gun pulse length to 800 us and during the weekend 
 +  - Aug29/30 run beam in GUN mode with Laser2 @ 3MHz
 +
 +//Note: all requests for machine time should be submitted through the usual FLASH studies request page//
 +
 +If more time as mentioned above is required for LLRF 9 mA + ATCA
 +preparation, it is in principle also possible to close the tunnel in the end of week 34 (e.g. for the weekend) or use still Mon Aug-31 or Tue Sep-1 night for LLRF w/o beam. However, that has to be planned beforehand, and cannot just be done in a short notice (we don't have any FLASH experts in control room, just the standard BKR operators).
 +
 +John Carwardine will work out a tentative time schedule based on requests submitted through the FLASH studies request page. Then we will see, if KW 35 (nights + weekend) is enough for the LLRF preparation work , or if more time is required either in the end of KW 34 or in the beginning of KW 36. 
 +
 +Note that in KW34-36, all the LLRF studies are without beam! Due to dump repair, no beam through the linac is possible (all valves closed). Beam operation is possible only in GUN mode.
 +
 +----
 +\\ 
  
 
9ma/sept09_studies.txt · Last modified: 2009/06/24 17:17 by 9ma
 
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