Difference between revisions of "PITMinutes 07-27-2020"

From CASA Wiki
Jump to: navigation, search
(Created page with "== Attendance == K. Baggett, J. Benesch, M. Bickley, T. Carlino, G. Ciovati, J. Creel, E. Daly, K. Davis, M. Drury, C. Hovater, N. Huque, F. Humphrey, T. Ganey, C. Ginsburg,...")
 
(Agenda and Notes)
Line 6: Line 6:
  
 
1. Operations Status and Summary/Review (Bickley/Drury)
 
1. Operations Status and Summary/Review (Bickley/Drury)
 
Results of 1L25 FE measurements
 
 
[https://casa.jlab.org/LINACPIT/FE_Measurements_at_1L25_071720.pptx Summary of Field Emission Measurements]
 
 
2. Energy Reach (Mounts)
 
 
RF/SRF issues and current energy reach
 
 
14 cavities hard off in North linac
 
4 cavities hard off in South linac
 
 
Lem to 1031/linac has very high trip rate
 
at moment.
 
 
Non-symmetrical running leads to loss of
 
polarization in one of Hall A or Hall C
 
 
3. General discussion
 
  
 
Action items:[1] Continue analysis of two hour pressure spikes
 
Action items:[1] Continue analysis of two hour pressure spikes
Line 34: Line 15:
 
uncontrolled gradient in cavity (cannot be detuned
 
uncontrolled gradient in cavity (cannot be detuned
 
away from fundamental frequency)
 
away from fundamental frequency)
 +
 +
2. General Discussion (Krafft)
 +
 +
Resume every other week meeting on
 +
RF/SRF issues.
 +
 +
Focus on OPS issues near term;
 +
get back to long term focus in
 +
longer term.
 +
 +
Charlie's new team.
 +
 +
 +
3. Progress on Particle Counter (Geng/Spata)
 +
 +
Particle Counter getting closer. Now design
 +
is focusing on "laser blanket" for aperture
 +
design. Detect phase shifts in interferometer
 +
arrangement.

Revision as of 13:00, 27 July 2020

Attendance

K. Baggett, J. Benesch, M. Bickley, T. Carlino, G. Ciovati, J. Creel, E. Daly, K. Davis, M. Drury, C. Hovater, N. Huque, F. Humphrey, T. Ganey, C. Ginsburg, J. Kent, A. Kimber, L. King, G. Krafft, F. Marhauser, R. Michaud, C. Mounts, R. Nelson, W. Oren, A. Palczewski., T. Plawski, T. Powers, J. Preble, C. Reece, T. Reilly, A. Seryi, A. Solopova, M. Spata, and P. Vasilauskis

Agenda and Notes

1. Operations Status and Summary/Review (Bickley/Drury)

Action items:[1] Continue analysis of two hour pressure spikes and check module stability after problem solved. [2] Increase Q_ext to allow higher operating gradient in 4 cavities [3] Turn on 1L08, in particular cavity three at low gradient. Hold field at low set point to avoid uncontrolled gradient in cavity (cannot be detuned away from fundamental frequency)

2. General Discussion (Krafft)

Resume every other week meeting on RF/SRF issues.

Focus on OPS issues near term; get back to long term focus in longer term.

Charlie's new team.


3. Progress on Particle Counter (Geng/Spata)

Particle Counter getting closer. Now design is focusing on "laser blanket" for aperture design. Detect phase shifts in interferometer arrangement.