Next Meeting

Date: August 19, 1997

Time: 3:00 - 4:00

Place: Bldg 89, Large Conference Room

Attendees

R. Legg, C.L. Bohn, A. Hofler, K Jordan, G. Neil, G.A.Krafft, L. Merminga, P.Piot, S. Benson, R. Walker

Addenda/Errata to Previous Minutes

• None.

Items of Discussion
-----------------

• Geoff reported on the Diagnostic Integration plan. The slides can be viewed on the www at: http://www.cebaf.gov/~legg/081297_comm/commtg.ps The main points were:
  They are responsible for the hardware.
  They are responsible for the software to operate the devices.
  They AREN'T responsible for data analysis or high level applications.
  

  If you need high level software to execute a particular test plan you need to write it yourself or see the software group (Alicia) and discuss with her your need and then prepare to battle for the resources to get it done.

  Similarly, the Diagnostic Review committee will rule on changes to diagnostic hardware and priorities.

• Steve reported that it was impossible to align the wiggler using the pulsed wire system. However, the four quads had been aligned to within 100 microns and we corroborated the STI measurements on the wiggler which verified that the wiggler was undamaged magnetically in shipping. Steve still would like to get Chris Curtis to check the alignment between the wire and the wiggler which will allow cross alignment to the quads.

• Lia reported that, for the first cavity in the cryounit, the optimum loaded Qext for 1.1 mA (first light) was so much different from the 5 mA case, that the rf power requirement would double to 11 kW if the situation was not corrected using a stub tuner or waveguide iris. The 11 kW is high enough that Joe Preble was nervous about damage to the warm window and he was going to approach Mark Augustine with the request. The second cavity in the unit was acceptable and the data on the cryomodule from the VTA hadn't been analyzed yet.

Action Items
------------

• High level apps for diagnostics meeting first week in Sept. (LEGG)

A-15   1  Commissioning Procedure                  Legg, Krafft     7/16/97
A-19   0  Web Documentation                                         weekly
A-34   2  Consistent Linac phasing plan            Yunn
A-44  1,2 Start Rui, Jinhu? on emittance code      Douglas          8/13/97

Action Items (pending)
------------

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-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-29  2   FEL/linac interaction                                     Merminga

Agenda for Next Meeting
-----------------------

             Item                            Person Responsible     Time
             ----                            ------------------     ----
*  Review agenda/corrections to minutes            Legg             5 min.
*  DW's                                            Karn             15 min
*  Discussion                                      All              20 min
*  New issues                                      All              10 min 
*  Agenda for next meeting                         All              5 min.