C-AD Accelerator R&D Division

Superconducting RF Group


56 MHz SRF Storage Cavity for RHIC, 2nd External Review, March 8-9, 2011

Review Agenda

Review Committee Members

John Weisend, FRIB, Michigan State University, Chair
Charlie Reece, SRF Institute, Jefferson Laboratory
Jim Rose, NSLS-II, Brookhaven National Laboratory
Jon Sandberg, C-AD, Brookhaven National Laboratory
Joe Tuozzolo, C-AD, Brookhaven National Laboratory

Charge to the committee

A review was held January 8-9, 2009 of the RHIC 56 MHz Superconducting Storage Cavity. That review addressed issues of physics design and engineering design in progress. Since that time the C-AD team has addressed the open issues identified by the review panel, implemented recommended changes, continued R&D and began fabrication phase of the project. Among actions taken in response to the committee recommendations are: i) a detailed plan of acceptance and commissioning was added to the overall schedule; ii) off normal events on the cavity (quenches, vacuum breaks, etc.) will be incorporated into the machine protection system, which will dump the beams when necessary; iii) the tuner plate region was re-designed and cooling was added to the tuner plate; iv) LHe cooling was added to HOM dampers. We ask the committee to review current state of the project and respond to the following questions:

  1. Are the cost and schedule reasonable for this stage of the project
  2. Review the testing and performance goals. Are proposed tests and procedures sufficient to reach those goals? Is tooling for the cavity processing and string assembly adequate? Does schedule provide enough time for testing?
  3. Evaluate the cavity and vacuum vessel design, fabrication progress and schedule.
  4. Evaluate the cryomodule design (tuner, vacuum vessel, shielding, support system).
  5. Review and comment on the designs of HOM and fundamental power dampers, FPC.
  6. Evaluate the use of an IR detector as a method to detect quench of HOM dampers.
  7. Review RF and vacuum sub-systems. Comment on soundness of their design and implementation.
  8. Are there open technical risks? If so, what additional steps are necessary to adequately answer them?

Tuesday, March 8th

8:30 Executive Session: Charge to Committee/Continental Breakfast - S. Belomestnykh

9:00 Welcome - I. Ben-Zvi

9:10 Introduction to the 56 MHz Project Review - S. Belomestnykh

9:30 Overview of RHIC Layout, 56 MHz Cost and Schedule - G. McIntyre

10:15 Coffee Break

10:30 Testing and Performance Goals - Q. Wu

11:00 Cavity & Helium Vessel Design Overview, Fabrication Progress, and Schedule - C. Pai and G. McIntyre

11:45 Tuner Design Overview, and Schedule - C. Pai

12:15 Lunch

1:15 Vacuum Vessel, Shielding, Support System: Design Overview, and Schedule - C. Pai

1:45 HOM & Fundamental Dampers, FPC: Design, Fabrication, and Schedule - S. Bellavia

2:30 Tooling for Cavity Processing and String Assembly C. Pai

3:00 Coffee Break

3:15 IR Detector B. Sheehy

3:45 Cryogenic System , Cryogenic Instrumentation - R. Than

4:30 Executive Session

5:00 Questions, Homework Assignments from the Committee

5:15 Adjourn Day 1

6:30 Dinner

Wednesday, March 9th

8:30 Executive Session/Continental Breakfast

9:00 LLRF System - K. Smith

9:15 Vacuum System and Instrumentation - M. Mapes

9:30 Response to Questions/Homework:

Off Normal events - S. Belomestnykh

Schedule and Facilities - G. McIntyre

10:00 Coffee Break

10:15 Executive Session/Report Writing

11:30 Closeout

12:00 Adjourn


Committee Report

56 MHz Project Review Final Report