PSB Commissioning Meeting #3

Tuesday 18 Sept 2018, 09:00 → 09:30 Europe/Zurich

Participants: Vincenzo, Fanouria, Alan, Gian Piero, Chiara

 

Updates on the EDMS document:

Vincenzo implemented three tables 

Table 1: Target in PSB for commissioning (first year of operation). Action: add the injected bunch length and extraction energy (PS: only 2 GeV option!) 

Table 2: parameters from Linac4. A peak current of 20 mA is always considered. Action: include specs as defined for Linac4 beam.

Table 3: KSW modulation functions for each user (reference for % defined as nominal current corresponding to a bump of 35 mm). Action: add figure of the waveform plus existing numbers in table (it will be filled while performing simulations).

Important open point: how to produce INDIV beam? Need to check with BI if the diagnostics can measure very short bunches (16-24% chopping factor). The present understanding is that Linac4 cannot produce low current beams since this would require changing the optics in the low energy part of the Linac and this is not possible in ppm mode. Still need to apply longitudinal shaving? This would add a lot of complication! 

 

Bettina (presented by Gian Piero)

First commissioning beam: pre-requisists and typical steps described in a table. 

Point to clarify: Injection with a fixed frequency requires injection on a flat-bottom or nominal 2 GeV cycle from the beginning.

Action: continue document editing with first turn, closed orbit etc...

 

Action Gian Piero: merge the two documents (EDMS area ready with document such that it can be edited by everybody, in case of major changes one can prepare a new document which will be then merged into the official one).

Action all: check the document and add information is needed (RF?) 

 

Next meeting on October 9th, Vncenzo and Simon will present their results on the algorithm for long. painting 

 

 

 

 

09:00 → 09:30 Document Preparation and Task Distribution