Meeting on Linac4 - PSB BI Line, 20-April-2009

Present:  

Excused:

• Feedback from last meeting:
  • WW communicated that a meeting to discuss the issues related to the head and tail dump has taken place on the 19th March 2009 and the minutes can be found here.
    The following possibilities have been discussed and will be studied for a follow-up meeting mid May:
    • Chopping as many bunches as possible with the present 3 MeV chopper driver design to reduce the load on the dumps.
    • Chop beam pulses longer than the present 1 us (20 us would be optimum) of be reduced (head dump) or removed (tail dump) with an upgraded design of the pre-chopper and/or the 3 MeV chopper
    • In case loading cannot be reduced to a satisfying level, alternative layouts with external dumps could be envisaged.
• Status outstanding issues:
  •  H- Injection geometry (BG)
  • Optics perturbations (CC)
  • Stripping foil specification (WW, BG)
• Modified specifications for warm BI magnets (DVT40, DVT50, DVT70, Etc.)
• A.O.B.

WW