1. Recent Activities
H. Loos
02/15/2011

2. Activities FACET NLCTA LCLS Bunch length monitor THz source
Adopt LCLS HLA
LCLS
A-line profile monitor improvements and bunch length measurements
OTR2 COTR study & mitigation
Tuning time reduction task force
New feedbacks troubleshoot & Matlab HLA upgrade
Pulse stealing beam diagnostics

3. A-Line Experiments PR18 new screen Resolution target ~125 um vert.
~250 um hor.
Smallest hor. size ~350 um
Resolve double horn structure
Measure < 2fs bunch length

4. OTR2 COTR Mitigation
Transmission grating + TCAV0 to study laser heater induced COTR
Multiple reflections
1st order 760 nm
1st order 380 nm
0th order
760 nm laser mirror as COTR band-pass filter not successful yet

5. Tuning Time Reduction Task Force
Minimize MD recovery and experiment switching time
Weekly meetings
Identify and improve HLA usage issues
Implement/improve event logging for HLA
Get better metric on tuning time
Improve accelerator setup reproducibility

6. Pulse Stealing Diagnostics
Use TCAV3 1Hz event
Set data slot 2 on PAU
Tested for most PAU RF stations
Implement emittance for LTU wires with fast feedback correctors