Minutes of RESULTS, PITZ Physics Seminar, 30.03.2012

Project: PITZ
Participants: F. Stephan, M. Krasilnikov, G.Kourkafas, D.Malyutin, G.Vashchenko, Y.Ivanisenko, K.Kusolyariyakul, J.Li, M.Otevrel, R.Martin, B.Marchetti, I.Isaev, M.Gross, M.Khojoyan 

Agenda:
1)	Igor Isaev: Analysis of the long term tests.
2)	D. Malyutin: TDS slice emittance simulation

Results:
1)	First analysis of run data for stable running: in few words very disappointing. We have to foresee time for conditioning with maximum power (llrf off), and 
- llrf has the be improved
- power to gun should be increased.
For the next run to test stable conditions one should try to answer the question what is the power level we can run stably with 700 us.
2)	Studied emittance and temporal resolution

Next steps:
What is to be done?	By whom?	Until when?	Done on	
Topic 1				
LLRF feedback parameters to be established for next run for stable conditions	Shift crew + Mikhail Kras. + Zeuthen RF + Matthias Hoffmann	April 5th		
Select only stable conditions, e.g. everything with reflected power lower than xy% for more than 5 minutes	Igor	April 12th		
Find out stable time with and without laser on cathode	Igor	April 19th		
Do histogram of uninterrupted periods	Igor	April 5th		
Timing and RF pulse length to be adjusted to accelerate 650 pulses	Shift crew + RF people	April 5th		
Laser to be tuned to produce 1 nC for single pulse for a flat train of 650 us	Matthias, Guido, Ingo	April 5th		
More power has to be sent to gun	Igor + Frank + RF people from HH and Zeuthen	April 5th		
Work around: define machine conditions (scaling) for reduced gradient	Mikhail			
				
Topic 2				
Check the phase spaces for the combined slices: at middle and at left and right ends	D. Malyutin	April 12th		
Simulate measurement with temporal slices instead of transverse slices	D. Malyutin	April 12th		
Check algorithm with simple example	D. Malyutin	April 12th		

				

Protocol prepared by F. Stephan, 30.03.2012