Next Meeting

Date: Oct 8, 1996

Time: 3:00 - 4:00

Place: Test Lab Conference Room

Attendees

G. Neil, D. Kehne, G. Krafft, R. Li, K. Jordan, R. Ursik R. Legg, L. Merminga, C. Bohn, D. Walker

Addenda/Errata to Previous Minutes

• R. Li continued her simulations for beam loss as a function of emittance and energy spread. Her simulations suggest one scraper with a 2 cm aperture placed in arc 1 will catch particles above 6 sigma. The jaws will be retractable to allow emittance measurements across the arc. Li/ Bohn will pass a written description of their results to M. Wiseman for design.
• 10 MeV beam dump BPM question raised by G. Neil. He questioned the placement in front of the raster. G. Krafft will organize another discussion on 10 MeV diagnostics.

  Items of Discussion

  ---

  • Updates to the task list.
  A-16 The longitudinal/transverse experiment will require 2 more weeks
  to plan.
  A-03 The 10 MeV dump instrumenation is complete but not on www.
  A-20 Delayed until after cryounit tests indicate need for simulations.
  A-21 Shifted to I&C meeting agenda
  A-26 Shifted to I&C meeting agenda
  A-28 Tech note is out but not on www.
  A-31,32 Verify that Jay Benesch knows he is responsible for SAVE/RESTORE
  plans for 10 MeV and IR-FEL machines.
  A-30 Find out if JvZeijts is going to do locks for IR_FEL
  A-36 Deleted Item because it is redundant with A-33
  A-44 Complete
  A-46 Report due for 10/8 commissioning meeting
  

  New Issues

  ---

  • none

  Action Items

  ---

  Action Priority Items (assigned)

  ---

  
  A-04   1  Unit gradient precision                       Bohn, Liu
  A-05   2  Injector energy precision                     Douglas
  A-06   1  10 MeV dump optics                            Douglas
  A-09   1  Dump Instrumentation                          Legg               6/04/96
  A-10   2  Back leg diagnostic placement                 Douglas
  A-15   1  Commissioning Procedure                       Legg, Krafft       5/16/96
  A-19   0  Web Documentation                             Jordan              weekly
  A-20   1  10->42 MeV dump                               Douglas
  A-24  1,2 Beam loss                                     Bohn
  A-29   1  Software Planning for Longer Term             Jordan (?)
  A-30   1  Burnthrough/Conflat Expansion                 Denard, Kloppel
  A-34   2  Consistent Linac phasing plan                 Yunn
  A-35   1  simultaneous transverse and longitudinal      Kehne/Engwall   8/6/96
  A-39   1  report on ARR plan                            Legg            8/23.
  A-41   2  Modeling of lower than 10 MeV injector        kehne, Liu      10/1/96
  A-42   2  2nd gun for long term tests                   Bohn            10/1/96
  A-44  1,2 Start Rui on emittance code                   Bohn            8/13/96
  A-45   1  decide on dump diagnostics                    Legg/Krafft     9/4
  A-46   1  specify the field quality in the
            dipole shut off to run straight ahead         Douglas         9/11
  A-47   1  OTR beam interaction number by                Denard          9/11
  A-54   1  FEL Turn-On Proc                              S. Benson       11/1/96
  A-55   1  Laser Diagnostic Proc                         Benson          11/1/96
  
  
  

  Action Items (pending)

  ---

  
  P-01  1   Determine Beam Pulse structure for setup                      Legg
  P-02  1   Laser phase modulator                                         Jordan
  P-04  2   Is an energy compression scheme needed?                       Douglas
  P-05  1   Devise fine-tuning procedure for buncher gradient             Krafft/Kehne
  P-08 1,2  How do we change energy? What is the energy range?            Benson
  P-09  2   Do we need bunching after the module                          Douglas
  P-14  1   How is the gun/laser operated?                                Benson
  P-15      Discussion on robustness of controls                          Legg
  P-18  1,2 Technote by Yunn summarizing machine impedance                Yunn
  P-19  2   Consistent linac/bunching phase sets                          Yunn
  P-20  1   Lock plans (who in particular)                                Johannes?
  P-21  1   Save/restore plans                                            Benesch
  P-25 1,2  RF control sensitivities/                                     Merminga
              Microphonics Diff for FEL/
              Pathlength effect
  P-28 1,2  Scrapers: Where and How?                                      Bohn, Li
  P-29  2   FEL/linac interaction                                         Merminga
  P-30  2   Tracking including realistic wiggler fields                   Douglas
  P-32  2   Are two sextupole families enough to tune M56                 Douglas
  P-35  1   Coordinated ITS beam running/SRF commissioning plan           Legg/Bohn/Harwood
  P-37  1   42 MeV dump design and interlocking                           Wiseman
  
  Agenda for Next Meeting
  
  
                  Item                              Person Responsible     Time
                  ----                              ------------------     ----
      *   Review agenda/corrections to minutes            Legg             5 min.
      *   Changes to drawing                                               5 min.
      *   Beam Pulse Formats and extinction ratios        Legg             25 min
      *   New Issues                                      ALL             10 min
      *   Agenda for next meeting                         All              5 min.