1. SCRF: Monthly WebEx Meeting Oct., 19, 2011
Report from PMs (15 min.)
GDE activity/meeting plan
Accelerator Systems: Technical Baseline Review (TBR) at DESY, Oct ,
Preparation for ILC-PAC (SCRF R&D/System-tests and Industrialization), Nov
Status of SCRF industrialization study
Preparation for TTC meeting and a post-TTC meeting: GDE-SCRF meeting at IHEP, Dec
Preparation for the SCRF Technical Baseline Review (TBR) at KEK, Jan ,
Report from TA Group Leaders (15 min)
Cavity Gradient R&D: R. Geng
Cavity Integration: H. Hayano
Cryomodule: P. Pierini
Cryogenics: T. Peterson
HLRF: S. Fukuda & C. Nantista
ML Integration: C. Adolphsen
Special Discussions (30 min.)
TTC: Preparation for discussion on S1-Global progress (in WG-2: Cryomodule Tests)
Post-TTC / SCRF meeting : GDE dedicated discussion for technical baseline for TDR and cost estimate
SCRF Technical Baseline Review: Preparation for the meeting at KEK, Jan
SCRF
SERF WebEx Meeting

2. PM’s Action/Meeting Plan (2011-2012)
Month
Day
Place
Meeting
Oct.
12-15 18 19
24-27 28 29
KEK, Tsukuba BN
Web
DESY
GDE-CFS meeting, and discuss JP single tunnel design with DRFS,
Visit BN, (w/ webex)
Monthly SCRF meeting
AS,BDS TBR
AS-CFS meeting,
Cost meeting
Nov. 11
14-15 16
Munchen
Prague
CEA-Saclay
Visit SST (EBW machine company)
ILC-PAC
Visit CEA/Saclay to discuss cryomodule assembly work
Dec.
5-8
8-9
(14)
Beijing
(Web)
TTC meeting
ILC-GDE SCRF meeting (as a post TTC meeting)
(Monthly meeting: probably to be replaced by the above meeting)
2012,
Jan.
19-20
KEK
Monthly meeting
Industrial study meeting with AS/Japanese Industry
SCRF TDR Preparation Review & WS
Feb. 8
March 21
22-23
CERN
CFS-Ams, EU review
CFS TBR
April
23-26
Korea
ACFA-LCWG
SCRF
SERF WebEx Meeting

3. Gradient Yield in Progress reaching 60 % yield at 35 MV/m
SCRF
SERF WebEx Meeting

4. GDE-CFS team visited Japanese Geographically Candidate Sites
Oct. 14,-15, 2011

5. Baseline Technical Reviews
SCRF
SERF WebEx Meeting

6. Status of Industrial Studies
EU:
Cavity industrialization study including facility by RI to be contracted through DESY
Cryomodule assembly study under discussion with CERN and withBabcock-Noell
Ams:
Cavity industrialization study by AES to be contracted through Fermilab (by DOE),
AS/Japan:
Cavity industrialization study by MHI contracted through KEK
Cryomodule assembly study by Hitachi contracted through KEK
Conduction cooling quadrupole engineering study by Toshiba contracted through KEK
SCRF
SERF WebEx Meeting

7. TTC Meeting at IHEP, Dec. 5-8
General agenda:
WG1:
Cryomodule tests and analysis
Focusing on the S1-Global test results and analysis
WG2:
Cavity material, fabrication, treatment and testing: new concepts and new benefits
WG3:
Cryogenics and cryostats: savings in coling power
SCRF
SERF WebEx Meeting

8. Technical Discussions on S1-Global Test Results at TTC, Dec. 5-8
Working Group 1: Cryomodule Test Results and Analysis
Date: Dec. 6, (the second, full day)
Sessions; 1 (2 hrs), 2 (1.5 hrs), 3 (1.5 hrs), 4 (1.5 hrs)
Focusing on cryomodule RF tests and problems observed
Cavity: Degradation of field gradient after cavity-string assembly
Input coupler: discharge and excessive heat-load
Tuner: LFD and control, and failure modes in operation
Cavity-string: alignment process and monitoring/control
(LHe jacket, magnetic shield and others)
Notes and Request from TTC:
Wider applications/projects to be covered
ILC, FLASH/XFEL, NML, Cebaf, Spiral-2, …
SCRF
SERF WebEx Meeting

9. GDE-SCRF Meeting as a post-TTC meeting, Dec. 8-9
Based on the S1-Global test results, to;
Discuss baseline technology for the ILC Technical Design Report and cost estimate
Project-oriented
Technology choice for costing base
Subjects to be discussed:
Plug-compatibility: boundaries to be established
Tuner design for the TDR cost-estimate baseline
Input coupler design for the TDR cost-estimate
Cavity structure for alignment, and for adapting high-pressure code,
S1-Global Report: to be finalized
SCRF
SERF WebEx Meeting

10. Our Direction for TDR-SCRF
Operational cavity gradient :
31.5 MV/m +/-20 %, with sorting /grouping
Prepare for cavity gradient degradation after cavity-string/cryomodule assembly,
With assuming 10 % cryomodule to be degraded with a level of 20 %
Cavity plug-compativility condition to be simplified
Discussion to be necessary specially for beam flange, tuners and couplers
Cryomodule configuration:
8 + (4+Q+4) + 8 cavity-string assembly as a baseline
Further study required for
periodicity of quadrupoles and
cost effective assembly technology
SCRF
SERF WebEx Meeting

11. Preparation for SCRF Baseline Technical Review (BTR)
Cavity gradient :
Update of ILC cavity production and process recipe.
Update of successful production yield definition/evaluation for production stage, including new parameters such as radiation, and …,
31.5 MV/m +/-20 %, with sorting, and requirements for HLRF
Gradient degradation after installation into cryomodule
Cavity Integration and Cryomodule assembly
Delivery condition of cavity with LHe vessel, and necessary testing sequence and monitor,
Plug-compatibility specially on, beam-flange, couplers and tuner, magnetic shield,
Cost saving with 5K radiation-shield simplification, removal of 5 K shield at inter-connect.
Acceptance criteria w/ He vessel, and test program (including high-pressure code)
Cryomodule and HLRF configuration with single tunnel
8 + (4+Q+4) + 8 cavity-string assembly
Split-yoke, conduction-cooled quadrupoles
Cavity-string and cryomodule Test
Warm conditioning of Input Coupler: before or after installation into the tunnel
Cold performance test: How much fraction to be cold tested? Subjects to be tested?
A. Yamamoto
TDR ACC & SCRF Guidline

12. Continued Cryogenics HLRF ML Integration
Location and the options of cryogenic systems
Heat balance with thermal design harmonization with cryomodule
HLRF
KCS/DRFS/RDR-unit HLRF system configuration including backup power supply and utilities with the single tunnel design
Marx generator?
AC power with gradient spreads,
Rescue/recovery plan against cavity degradation after installation into cryomodule, by using circulator and power distribution system,
Optimizations for low-power and high-power option.
Tunable power distbribution system
ML Integration
Beam dynamics
Quadrupole/BPM periodicity, locations, alignment, and beam tunability,
Bunch spacing limit specially on KCS (requirement of DR beam dynamics)
Availability, reliability, and backup of cryomodules to be required
A. Yamamoto
TDR ACC & SCRF Guidline

13. How to prepare for TDR? Discussion during LCWS
Further technical discussion in TTC, Dec
ILC Specific discussion in post-TTC, Dec. 8-9,
Consensus for TDR writing, BTR at KEK, Jan. 19 – 20, 2012
A. Yamamoto
TDR ACC & SCRF Guidline

14. SCRF
SERF WebEx Meeting

15. SCRF Procurement/Manufacturing Model
ILC Host-Lab
Technical Coordination
for Lab-Consortium
Regional Hub-Lab: A
Regional Hub-Lab:
E, & …
World-wide
Industry responsible to
‘Build-to-Print’ manufacturing
Regional Hub-Lab: D
Regional Hub-Lab: B
Regional Hub-Lab:
C: responsible to
Hosting System Test and Gradient Performance
Regional hub-laboratories responsible to regional procurements to be open for any world-wide industry participation
: Technical
coordination link
: Procurement link
SCRF
SERF WebEx Meeting

16. Production Process/Responsibility
Step hosted
Industry
Industry/Laboratory
Hub-laboratory
ILC Host-laboratory
Regional constraint no
yes
Accelerator
- Integration, Commissioning
Accelerator sys. Integ.
SCRF Cryomodule
- Perofrmance Test
Cold, gradient test
As partly as hub-lab
Cryomodule/Cavity
- Assembly
Coupler, tuner, cav-string/cryomoduleassmbly work
Cryomodule component
- Manufacturing
V. vessel, cold-mass ...
9-cell Cavity
- Performance Test
9-cell, end-group assembly, Chem-process, He-Jacketing
Sub-comp/material
- Production/Procurement
Nb, Ti, specific comp. …
Procurement
SCRF
SERF WebEx Meeting