Asian R&D Activity and Resources

26 Apr. 07 ILCSC-MAC, FNAL Global Design Effort 1

Asian R&D Activity and Resources

K. Yokoya

KEK

ATF/ATF2, STF

KEK budget

Korea, China, India


ILC-Related Facilities at KEK

ATF/ATF2

Cavity R&D Stand

STF

#4 building


ATF• Built in 1993, still a good tst bench for ILC-DR• Formal MoU of international collab. in 2005


What’s Being Done at ATF• Fast kicker development (KEK, LLNL, SLAC, DESY)

• Laser wire (RHUL)• Improvement of DR BPM resolution (SLAC,

FNAL)• Digital IP feedback system (Oxford, etc)• nm resolution BPM (SLAC, KEK)• Laser-Compton scattering for positron

production (ILC ACD)


ATF2

• ILC-type Final Focus down to ~35nm• Stabilization to a few nm


R&D Items in ATF2• Final focus tuning study with ILC optics• High availability power supply• Laser interferometer beam size monitor to ~35nm

(doubled frequency, phase stabilization)• nm resolution BPM at IP• Digital feedback with ILC-like beam• Active stabilization of final quad• …….

By international collaboration from the construction stage


Cost Breakup of ATF2


ATF2 Schedule

• Budget profile peak in FY2007• Floor refurbishment in summer• Remodelling the extraction line next summer• Beam operation in Oct. next year


Cavity R&D• TESLA-like 9 cell cavities

– improvement of stiffness– Two disk window input coupler– Slide jack tuner

• LL-type 9 cell cavities– Low surface magnetic field– Input coupler of capacitive coupling type– Coaxial ball-screw tuner

• LL-type single-cell study for establishing surface treatment


Cavity Program in FY2007• TESLA-like

– 2-3 new cavities (most likely 2)– For S0– Possibly for replacement in STF1 (STF1.5)

• LL– 4 Existing 9cell cavities

• 2 of them for S0 (shipped to US)• 1 in STF0.5 but will be removed later• 1 for tuner test

– 4 New ICHIROs• 2 to be installed in STF1• 2 for S0 incl. 1 from Korea (for STF1 if in time)

– Single-cell


STF

• STF1 (2005-2007)– First step of system construction– 2 cryostats with 4 TESLA-like

cavities + 4 LL-type cavities– Divided into substeps

• Phase0.5 1+1 cavities(test by summer this year)

• Phase1.0 4+4 cavities (may be 4+2)(construction end by Mar.2008)

• Phase1.5? Replace cavities


STF0.5 Installation

•1st cool down in May

•Finish test in July


STF2• 1 RF unit (as close as ILC design)

– 1 modulator (can be Marx if in time)– 1 klystron (horizontal?)– 3 cryostats (close to type-4)– Beam (full intensity but not short bunch)

• Timeline– Design in 2008

• essential part of the cryomodule design by summer• Cavity type must be selected

– Construction in 2009-2010


SC Infrastructure• Clean room (in use)• Ultra-pure water (in use)• High pressure rinsing (almost completed)• Electro-Polishing facility

(completed in May, routine operation in Oct.)• Vertical test stand (to be completed in Oct.)• Next year (?)

– Chemical polishing facility– EP system for KEKB (incl. crab)


STF Timeline


Budget(1)• FY2007 budget plan discussion started last

November• Intensive review and recommendation by

RDB• Delay of budget decision at KEK

(fiscal year already started in Apr.1)• Not yet final as of mid.Apr, but accurate within

a few %• Schedule shift inevitable

– Delay of STF0.5– Budget short


World Premier International Research Center

• A new fund starting (second half of) JFY2007 to create top-level 5 research centers with a size of 200 researcher/post docs/engineers/staffs.

• At least 30% of researchers are expected to come from abroad.

• Official language is English.

• 0.5-2 B¥/year x 10 years (mainly personnel), can be extended up to 15 years.

• More than 50 proposals seems to be submitted.

• KEK is now preparing a proposal to be submitted at the end of May.

• Tentative title of the proposal is “International Center for Frontier and Innovation of Accelerator Science and Technology”.

• Main objective is to develop advanced accelerator technologies;SC RF acceleration and low emittance beam source/control.

• We plan to implement ILC activities into this program as much as possible.

• Strong suppor and participation from ILC community is highly welcome.


International Center for Frontier and Innovation of Accelerator Science and

Technology • 4 research units and satellites outside KEK– Advanced accelerator R&D unit (ILC&ERL)– Innovative acceleration technology R&D unit– Innovative experiment technology R&D unit– Advanced accelerator science unit– Satellite centers outside KEK

• e.g. FNAL,SLAC,Cornell,JLab,DESY,CERN...• Staffs

– 1 director– 4 unit leaders, ~16 principal investigators– ~30 scientists, ~50 post docs, ~30 engineers– ~20 secretaries, ~50 administrators– Half of researchers/post docs come from ouside KEK.


Korea: R&D for EDR at KNU Damping rings (2007-2009)

- Fast-ion beam instability

- Lattice design and optimizations

- Ecloud beam instability

Beam diagnostics (2007-2008)

- Low-Q IP-BPM and S-band BPM at ATF2 (2007-2008)

- Cold-BPM at STF Phase 2.0 (2007-2008)

Bunch compressor (2007-2009)

- Optimization and improvement of performances


R&D for EDR at KNU

Superconducting ICHIRO rf cavity R&D on cavity design (2007-2008)

- Multipacting suppression

- HOM damping

- Mechanical stress

R&D on rf cavity fabrication (2007-2009)

- processing for 1 cell cavities and 9-cell cavity

R&D on Klystron (Plan)


Budgets and Collaborations at KNU

Official budgets in FY2007 and FY2008

: 0.3 M $ / year (without salary)

Available resources in FY2007 : 6 FTEs + 5 Part time Collaboration items and groups

Items Group

ATF Fast-ion / FFTB ATF2

Damping ring Lattice, Fast-ion,Ecloud

ANL, KEK

Beam diagnostics

IP-BPM, S-BPM ATF2

Cold-BPM STF

Bunch compressor Lattice, corrections KEK

RF cavity Cavity design, Fabrication KEK (Saito)


Korea: PAL Status April, 2007• Construction of SRF Test Lab. in PAL (50% done)

– Frequency: 1.25-1.55 GHz, RF Power: ~100 W – Test cryostat for cavity with 1-3 cells @1.3GHz

• R&D for ILC ACD (ICHIRO) Cavity• Fabricating 9-cell cavity for S0 R&D• Surface preparation by PAL member in KEK

• Supplying Q-BPM for ATF2• Study effects of electron bombardment on cavity

surface– Properties of Nb material (specimen test)– Performance of single cell cavity


PAL: PLAN in 2007-2008 R&D for ILC ACD (ICHIRO) Cavity

• S0, S1, S2 R&D with KEK • Fabrication 1 9-cell and 5 single-cell cavities• S0 R&D for single-cell cavities in PAL

Construction of SRF Test Lab. in PAL• Will be completed in 2007 and be operated in 2008• Extension for 9-cell cavity R&D• Facilities for surface preparation of single-cell cavity will be

Study effect of electron bombardment on cavity surface• With single-cell cavity• With 9-cell cavity, (on talk with KEK-K. Saito and JLab-P.

Knesle)


PAL: Budgets

Budget in 2005-2006: 392,000 USD• R&D of 3rd harmonic cavity: 70,000 USD

• R&D of ILC ACD (ICHIRO) cavity: 112,000 USD

(70,000 USD from industry.)

• Construction of SRF Lab.: 210,000 USD

Budget in 2007: 195,000 USD + 20,000 USD• R&D of 3rd harmonic cavity: 20,000 USD

• R&D of ILC ACD (ICHIRO) cavity: 125,000 USD

(75,000 USD from industry.)

• Construction of SRF Lab.: 50,000 USD

• Cavity BPM electronics: 20,000 USD


China• Beam dynamics in ILC main

linac• ATF2

– Fabrication of Q-magnets – beam dynamics study

• LLSC cavity studies, large grain Nb.

• Chinese ILC test cryomodule design

• High power coupler R&D for ILC• Positron Source• Lattice design of Damping Ring• LLRF for ILC


Large Grain Nb

108

109

1010

1011

0 10 20 30 40 50

Qo

Qo

Eacc [MV/m]

Large grain Nb from Ningxia

Single-cell test done at KEK (48MV/m)


China: Budgets• 3.5 Million RMB since 2005

(1US$ = 7.8 RMB)• Application for next fiscal year

– 1.5 Million RMB from IHEP– 0.49 Million RMB from NSFC

(for beam dynamics)– 30 Million RMB from MOST

(incl. physics, detector, accelerator)


India• RRCAT is planning a large SC Facility

– Cavity fabrication– EBW– Polishing (mechanical, CP, BP)– Clean rooms– High Pressure Rinsing– Etc

• Budget starts from this FY• Scope at the moment is FEL (Tera Hz region)

and SNS• But can get experience for ILC production


60m

Proposed Facility at RRCAT


Summary

• ATF2 going well. Budget peak this year.• STF0.5 finish in July. A few months delay.• STF1 to follow. Construction end Mar.2008.• Budget tight. Seeking for another budget

source.• Other Asian countries are building up.

Own projects & participation in KEK work.

Asian R&D Activity and Resources

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