1. Progress in Asia Hitoshi Hayano,KEK, 06162009
TTC June2009
Progress in Asia
Hitoshi Hayano,KEK,

2. outline STF progress IHEP progress RRCAT progress PAL status
Finish of STF 1.0 (4 cavities cryomodule experiment)　　　
Preparation of S1-Global
Start-up of STF 2.0
S0 efforts
IHEP progress
3 years development plan of 1.3GHz SCRF test facility　　　
cavity, input coupler, tuner, LLRF, MBK, Marx, VT, HTS,…
RRCAT progress
press and trim of 1.3GHz half cell, EBW test, endgroup machining　　　
infrastructure, materials R&D
PAL status
SC cavities for PLS2 upgrade　　　

3. STF status and plans

4. STF1.0 ( 4 TESLA-style cavities in short cryomodule)
exp. term : May 2008 – Dec. 2008
Experience of ILC cryomodule technology
module assembly,
2k cryogenics,
heat load,
cavity performance,
LLRF performance,
waveguide configuration test
high power test, one by one
high power test, 4 cavities combined

5. Cavity performance in STF 1.0 cryomodule
BLC #2 cavity performance
FB on
Piezo off
FB on
Piezo on
Lorentz detune meas.
(piezo on)

6. STF1.0 remains ( in 2009, before S1-Global)
laser displacement-meter
precise measurement of
GRP thermal distortion
using laser distance-meter,
improved WPM monitors
with optical target
(2) Test of 5K shield removal
optical target
WPM
Cross section
with/without 5K shield

7. STF
S1-Global
Aiming 31.5MV/m operational cryomodule, by international collaboration
assembly : Oct April 2010
operation : May 2010 – December 2010
Module-A : existing KEK cryostat + 4 new KEK cavities
Module-C : INFN cryostat + 2 DESY cavities + 2 FNAL cavities
power distribution : 2 SLAC VTO + existing KEK WG
KEK-new
FNAL
DESY
FNAL
DESY
KEK
Connection to 2K Cold Box
End Cap
Module C (INFN)
Module A

8. STF2.0 accelerator plan STF New installation;
photocathode RFgun : FNAL gun cavity, JINR-IAP laser, ATF photocathode
capture cavity : two 9-cell SC cavities
cryomodule : 3 ILC cryomodules (1 ILC RF unit )
klystron : 10MW horizontal multi-beam klystron
modulator : bouncer modulator
Cavities : 2+26
Klystrons : 5MW + 5MW + 10MW
Beam : 850MeV, 1ms train、9mA、 5Hz

9. STF2.0 Pre-accelerator part
On a way to construct STF phase2.0 accelerator;
verification experiment : compact light source accelerator
use of STF RFgun and capture cavities : two 9-cell SC cavities
with beam collision to stored laser in multi-mirror storage cavity.

10. from S1-G to STF phase 2 STF 2008 2009 2010 2011 2012 2013 2014　
KEK cavities
production & VT & jacket
operation
31.5MV/m
S1 Global
assy.
DESY, FNAL VT and jacket
Compact
Light
Source
(STF2 pre-accelerator)
FNAL RF gun cavity
RF gun assy.
JINP & IAP laser production
STF/CLS Laser installation
Capture Cavities installation
HPV inspection
Compton Laser installation
CLS beam operation
capture module
2 cavities production VT
jacket
STF Phase2
HPV inspection
1 cryomodule
9 cavities production VT
jacket
assy.
operation
HPV inspection
2 cryomodules
17 cavities production VT
jacket
assy.
operation

11. S0 effort in KEK STF Research on gradient limitation;
Use of Inspection Camera, T-map, X-ray map, pass-band modes meas.
Surface study on sample plate and sample in the single cell,
Study on effect of various rinse method,
Study on guided repair method,
cylinder rotation
LED illumination
2.8µm/pix resolution
Revised Inspection Camera (KEK-Kyoto)
On-line T-map is under development

12. Recent KEK cavity production
STF
Recent KEK cavity production
TESLA-shape
2007 production : MHI MV/m quench
MHI MV/m FE-limit, 20MV/m quench, ??
2008 production : MHI-07(1st VT next week)
MHI-08(under treatment)
MHI-09(under treatment)
2009 production : 2 for capture cavities (under bid)
9 for 1 ILC cryomodule (under fabrication)
2 for S0 study(under fabrication)
LL-shape
2007 production : LL-#7 (under testing)
LL-#8 (under testing, go to Jlab for test)
2008 production : LL-#9 (under testing, large grain)
candidates
of S1-Global
STF2.0
ACD effort
Hitachi and Toshiba started cavity development by collaboration with KEK.

13. Cavity Fabrication Facility
New Cavity Fabrication Facility is under discussion
STF
Introducing
All-in-one fabrication utility
aiming for a model factory for ILC cavity fabrication.
Material inspection, machining, press, trimming, EBW for endgroup, EBW for cells,
Chemical polish, rinsing, clean room, various inspections, RF measurements, etc.　
STF Building
Cavity Fabrication Facility
STF tunnel
New carry-hatch

14. IHEP(China) progress

15. IHEP
IHEP 1.3 GHz SCRF Program
1.3 GHz SCRF Accelerating Unit and Horizontal Test Stand
leader: Jie GAO
key components R&D and integrated test
serves as a Horizontal Test Stand (HTS) for components R&D
Subsystems R&D
Two 9-cell cavities (low-loss type, large grain niobium, MV/m)
Two input couplers (KEK STF-baseline type)
Tuner (slide-jack or new blade tuner) and LLRF
Cryomodule (short) and cryogenics (new system)
Marx modulator and MBK
SCRF Facilities R&D and upgrades (CBP, BCP, HPR, Pre-tuning machine, …deliver before Aug. 2009)
Cryogenic system for VT and HTS

16. 9-cell cavity dumbbell welding and tuning
IHEP
R&D Progress (1)
9-cell cavity dumbbell welding and tuning
(surface treatment at IHEP, test at KEK in late 2009)
Input coupler
RF and thermal simulation
LLRF layout and tuner 3D model

17. Marx modulator IGBT 12 kV switch module test
IHEP
R&D Progress (2)
Cryomodule structure design, thermal & mechanical analysis
Marx modulator IGBT 12 kV switch module test
For more details:
First Mini-Workshop on IHEP 1.3 GHz Superconducting RF Project, June 10-11, 2009, IHEP, Beijing, China,

18. RRCAT(India) progress

19. Facilities for SCRF Program Set Up / Planned
RRCAT
Facilities for SCRF Program Set Up / Planned
For cavity fabrication:120 T Hydraulic press, Nb machining facility, EBW m/c etc.
For chemical & thermal processing: EP/BCP /CBP, HPR & annealing furnaces etc.
Support facilities: Software for cavity design, UTM, CMM, SIMS, Eddy Current Scanner etc.)
Assembly & testing set up: Clean-room, Test cryostats, RF sources etc.
Cryogenic infrastructure: large capacity liquid He plant, liquid N2 plant and accessories for larger cryogen & gas handling systems etc.
Facilities for superconducting materials R&D: Augment available magnetic, electrical & thermal conductivity measurement set up.
120 T Hydraulic Press
Al half cells

20. Development of 1.3 GHz Tesla Type Cavity
RRCAT
Development of 1.3 GHz Tesla Type Cavity
Forming / Machining Tooling & Final Half Cells
Manufactured, qualified one full set of forming and machining tooling (Mid half cell, Long end half cell, Short end half cell) and used to make trial pieces.
Also one complete set of forming tooling made and shipped to Fermilab.
Developed Niobium grade RRR 300 half cells for 1.3 GHz SC Cavity.
Forming tooling
Half cell machining
CMM inspection
Formed half cell
Parameter
Target Value
Obtained Value
Profile tolerance, mm
± 0.2
Parallelism of equator & iris faces, mm
0.02
0.03
Roundness of equator ID, mm
0.05
Roundness of iris OD, mm
0.01

21. On way to 1.3 GHz single cell Nb cavity
RRCAT
First EB welding trial :1.5 GHz Al prototype cavity
Made in collaboration with Indian Industry, LTE, Coimbatore
EBW Machine : 6 kW, 60 kV;
M/s Techmeta, France
Chamber: 50cmx45cmx45cm
After cleaning
As received
On way to 1.3 GHz single cell Nb cavity
(EB welding trials joining half cell to pipe)
Made in collaboration with IUAC, New Delhi
EBW Machine : 15kW, 60 kV;
M/s Techmeta, France
Chamber : 2.5 m x 1 m x 1 m

22. Economic manufacture of “End Groups” of SC cavities
RRCAT
Economic manufacture of “End Groups” of SC cavities
Alternate way to make
the cavity “end groups”
M/S CRISP,Bhopal
Approach
Machine entire end group from a single cylindrical block. Use EDM wire cut process. Solid part will be used to make other components like form teil housing.
Extensive prototyping and testing.
Status
Prototypes in Copper and Low RRR niobium block completed. 22

23. PAL(Korea) status

24. PLS-II RF System Plan
PLS upgrade: energy from 2.5 GeV to 3.0 GeV, beam current from 200 mA to 400 mA.
using 3 sets of superconducting RF system.
( 3 distributed cavities or 3 cavities in one long section, are under consideration.)
CESR cavities or
KEKB cavities
upgrade period:

25. END