ILC-GDE SCRF Meeting at IHEP (as a post TTC meeting)

8 Dec 2011, 12:30 → 9 Dec 2011, 12:05 PRC

Meeting Room A415 (IHEP, Beijing)

A. Yamamoto and GDE Project Managers and SCRF Associate Project Managers

Objectives: - Discuss the S1-Global test results and the progress report - Discuss baseline design of SCRF cavity/cryomodule for the TDR and cost-estmiate - Prepare for the SCRF Baseline Technical Review Meeting at KEK, Jan. 19 - 20

Background material from DESY BTR (and before)

• http://ilcagenda.linearcollider.org/getFile.py/access?contribId=32&sessionId=55&resId=0&materialId=slides&confId=5222
• http://ilcagenda.linearcollider.org/getFile.py/access?contribId=44&sessionId=58&resId=0&materialId=slides&confId=5222
• http://ilcagenda.linearcollider.org/getFile.py/access?contribId=5&resId=1&materialId=slides&confId=5099

Webex Info Dec-8 Webex_Connection_Information-Dec-8.docx

Webex Info Dec-9 Webex_Connection_Information-Dec-9.docx

Thursday 8 December

12:30 Lunch (lunch boxes)

1 Introduction: Technical Guideline for TDR-SCRF

- PM's reports by (AY and MR) for - meeting objective - Technical guideline with current view for the TDR baseline design and the cost study

Speaker: Prof. Akira Yamamoto (KEK)

Slides and Excel table KEK_BTR_Change_List.xlsx SCRF-BTR-Plan-111208.pptx

2 Cavity Gradient

- Scope for improving the gradient, - Production Yield and the variation assumed, - Degradation after the cavity string assembly - Scope for 1 TeV

Speaker: Dr Rongli Geng (Jefferson Lab)

Slides GDE_SCRF_8dec2011_Beijing_Post_TTC.ppt

3 Cavity Integration

- Plug-compatible envelope - Tuner, Input-coupler, beam-flange, magnetic shield, etc. - LHe tank, suspension scheme and alignment, etc.

Speaker: Hitoshi Hayano (KEK)

Slides TDR-param-discuss_cavityIntegration.pptx

4 Cryomodule

- Cryomodule envelop and interface (flanges etc..) with plug-compatility - Simplification of 5 K radiation shield - Assembly, alignment, tolerance, and deliverable conditions - Cryomodule unit: desired to be (8+4Q4+8) - Conduction cooled, splittable SC quadrupole - High-pressure-code issues - Interface to CFS

Speaker: Paolo Pierini (INFN Milano LASA)

Slides TDR_Cryomodule-8Dec2011.ppt

16:30 Tea/Coffee

5 Cryogenics

- Thermal balance with cryomodule thermal load, - Cryogenics unit and locations: hopefully to be reduced (5 to 4 units / linac) - Interfaces to CFS

Speaker: Mr Tom Peterson (FNAL)

Slides ILC-TDRcryogenics-8Dec2011.ppt

6 HLRF

- Baseline design and backup solutions for KCS and DRFS, and RDR backup for each case - Consistent baseline design in ML and BDS (booster) - Power balance and mechanical installation Interfaces to CFS - Specially because of gradient spreads, degradation after installation into cryomodule, and their influence (difference) to the cost,

Speakers: Dr Christopher Nantista (SLAC), Dr Shigeki Fukuda (KEK)

Slides 111208　Fukuda_PostTTC-HLRF.pptx

7 ML Integration

- Beam dynamics, alignment tolerances, possible tilting allowance etc... - Interfaces to CFS: additional tunnel length, - backup length (~400 m?), and - additional length for compensating the degradation. - additional length for CM unit change to 8 +4Q4+8, - 1 TeV extension (assumption and consideration)

Speaker: Chris Adolphsen (SLAC)

8 Summary for the 1st day

Summarize the discussions on the 1st day, and prepare for the discussions on the 2nd day.

19:15 Dinner

Friday 9 December

9 S1-Global Progress Report

- Status and further work

Speakers: Hitoshi Hayano (KEK), Dr Nobu Toge (KEK)

Slides S1Greport_status20111208jk-2.pptx

09:30 Tea/Coffee

10 Preparation for SCRF BTR at KEK

- Summary of discussions and home-work assignment

Speakers: Prof. Akira Yamamoto (KEK), Jim Kerby (FNAL)

11:30 Adjourn (no lunch)