Meeting on Linac4 - PSB BI Line, 22 March-2010   

Present:  C. Bracco, G. Bellodi, E. Carlier, C. Carli, B. Cheymol, B. Goddard, L. Sermeus, B. Mikulec, F. Roncarolo,  J. Borburgh, B. Balhan, R. Chamizo, W. Weterings

• Follow up previous meetings - See List of Outstanding Issues
  LS mentioned that the KSW specification should be added to the list.
• Specified beam size in the injection region at 160 MeV.
  GB presented the Beam size at the BI.DIS and BI.SMV taking into account a 5% quadrupole error, simulated by M. Eshraqi. For the simulations, D = -1.4 ± 0.4 was used which is the most unfavorable case. Nevertheless, it was agreed that all optics should be calculated for the full tuning range. The values presented for the BI.DIS are well within limits, the values for the BI.SMV are more tight, but it needs to be checked if these assume full or half aperture dimensions.
• Remarks received on drafts of specifications for the H0/H- dump and current monitor.
  See attached files of remarks on specification H0-dump and remarks on specification of current monitor. The specifications will be updated with relevant comments and prepared for approval.
  BC showed some thought of a brainstorming session on the current monitor showing that carbon would give less secondary emission but a thicker plate than titanium is required. Copper would require a very thin plate, but has higher secondary emission than titanium. Therefore titanium is the best candidate.  JB mentioned that for these very thin plates (50µm) one does not have to worry about electrical conductivities nor B field disturbance. The idea of testing a similar system in front of the 12MeV dump at the L4 test bench was mentioned.
• A.O.B
  The requirements for the Head and Tail Dump need to be fixed.
  

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