NOTE: C. Bohn will be on vacation from 14-24 Jul 98; D. Gilchrist will have phone numbers by which he can be reached during that time.
Next Meeting
Agenda for Next Meeting
Item Person Responsible Time ---- ------------------ -------- Status of Open Action Items All 5 min Commissioning Schedule Bohn 10 min Status of Subsiiary Tasks for Metaprocedure Bohn 5 min Overview of Injector Plans Biallas 20 min New Issues All 5 min
This Week's Attendees
S. Benson, J. Bisognano, F. Dylla, A. Grippo, K. Jordan, R. Lauze, R. Li, L. Merminga, G. Neil, D. Oepts, P. Piot, M. Shinn, B. Yunn
Closed Action Items
Items of Discussion
The weekly schedule was discussed. During the week gun reassembly proceeded smoothly and we picked up a full day on the schedule. However, the cathode that was produced had difficulty holding off voltage beyond 335 kV and produced no photoemission so it was decided to reactivate the NEG pumps and high voltage process the cathode to 425 kV. Along the way we will gather data from the RGA and also try to determine whether the heat cleaning, or cesiation is the biggest problem in producing voltage standoff at the cathode.
A schedule has been produced for the next two weeks which has us doing 5 micron lasing with the high power mirrors, doing initial recirculation, and providing light for FEL characterization. We will run this weekend and have no Maintenance Day on Monday 7/27 but will resume normal schedule the following week.
A proposal to install up to 6 new viewers was presented by K. Jordan to attempt coverage of the large spans in the machine where we have few diagnostics. It appears possible to install viewers in existing ports so that the mods required are minimal. A prioitization was established for various locations. K. Jordan was directed to acquire the components and assemble and install as many as budget permits.
New Issues
None.
New Action Items
Resolve Safety/Operations Documentation Issues Neil Produce gun upgrade plan Biallas Hold review meeting on CSR plans Bohn Determine FEL Characterization Plans
Old Action Items
None.
Procedures in Work (UNREVIEWED AT Meeting)
Procedures Needed for Recirculation
Unfinished Subsidiary Tasks for Phase Space Metaprocedure
Task Principal ---- --------- I. Stabilize Drifts in Drive-Laser RF Phase Walker/Fugitt II. Calibrate RF Gradients A. Buncher Yunn B. Cryounit Cavities (fix control screen) Merminga/Krafft/Yunn C. Cryomodule Cavities Merminga/Krafft/Yunn III. Reconcile Methods for Setting RF Phase Merminga/Krafft/Yunn A. Buncher Cavities 2. Minimum bunch length/time of flight B. Cryounit Cavities 1. Transient phasing 2. Cresting 3. Time of flight IX. Complete Diagnostics Procedures and Training Krafft/Piot A. M_55 #1, #2 B. Happek #1, #2 C. BPMs 1. button calibration factors 2. rotated MEDM spike charts 3. difference orbit data acquisition script D. Multislit #1, #2 E. Quad/Viewer (at Wiggler, after Wiggler) F. Multimonitor (at Wiggler) G. SLM/CSR H. Zero Phasing I. Momentum Spread (Injector, Linac Pre-Wiggler, Linac Post-Wiggler) J. Energy XIV. Laser Turn-On Procedure Benson