1. Utilization of KEKB for ILC R&D
Y. Suetsugu on behalf of K.Oide and KEKB staff
KEKB
at ILCDR2006

2. Grand Lepton Collider Project
The future plan of Japanese Higher Energy Physics Community is under discussion and not yet concluded. This is not more than a material for the discussion.
dai - leputon - keikaku
「大レプトン計画」
Grand Lepton Collider Project
K. Oide for HEC
Aug. 17 & Sep. 9, 2006

3. We will do everything: ILC, SuperKEKB, J-Parc.
2007
2010
2015
2020
ILC
SuperKEKB
J-Parc
(Numbers are estimated FTE)
R&D I 60 40
R&D II
>> 90
Construction
Exp.
KEKB 80 60
Constr. 30
Experiment
Constr. / Comm.
Experiment
Phase-II
All members of KEK-ACCL will have both duties for ILC and SuperKEKB.
The weight between SuperKEKB and ILC is subject to change, depending on the readiness of ILC.
The individual role and weight in the two projects should be flexibly managed by considering time, speciality, and occasion.

4. We will do everything: ILC, SuperKEKB, J-Parc.
2007
2010
2015
2020
ILC
SuperKEKB
J-Parc
(Numbers are estimated FTE)
R&D I 60 40
R&D II
>> 90
Construction
Exp.
KEKB 80 60
Constr. 30
Experiment
Constr. / Comm.
Experiment
Phase-II
In the 2010s decade, while producing physics by SuperKEKB, utilize KEKB accelerator’s material and human resources to the R&D of ILC.
Upgrade KEKB to SuperKEKB, and do experiment.
R&D of ILC for industrization and construction.

5. Items of utilization of KEKB for ILC R&D, for example,:
Positron sources, flux concentrator
Orbit and emittance control in linac
Low-emittance operation of KEKB-LER
Electron cloud、test of beam pipes and coatings
Effect of wigglers
Development of ring RF system with ILC spec, development of ring klystrons
Next generation of bunch-by-bunch feedback、ring BPM
Detector Components
etc

6. Items of utilization of KEKB for ILC DR R&D:
Experiments on suppression of electron cloud effect
Development of a beam duct with ante-chambers.
Survey of surfaces with a low secondary electron yield, and development of a clearing electrode.
Measurement of electron density in a vacuum pipe
Measurement of electron cloud instabilities
Measurement of beam spectrum, beam size and so on.
Operation of KEKB LER at a low emittance mode
KEKB LER can be operated with a horizontal emittance of approximately 1.4 nm at 2.3 GeV.
Perform studies on orbit and optics control, effects of machine errors, tuning methods against emittance growth etc.

7. (An example) Low emittance mode of KEKB-LER

8. Items of utilization of KEKB for ILC DR R&D:
RF system-related issues
To be defined. For example, ring RF, Low level control.
Bunch by bunch feedback systems and related diagnostic systems
Development of next-generation digital filter systems for bunch by bunch feedback.
Development of front-end and rear-end analogue signal processor s for bunch by bunch feedback and diagnostics.
Development of ultra-wideband pickups and kickers.
Effect of wigglers
Study the effect of wiggler field strength on damping time, beam size, luminosity etc.

9. Grand Lepton Collider Project
GLC-I ( ):
SuperKEKB Construction / Experiment
ILC R&D
Grand Lepton Collider Project
GLC-II ( ):
ILC Construction / Experiment
SuperKEKB Experiment
Future R&D (CLIC, Muon)
GLC-III ( ):
ILC Experiment / Upgrade
Muon Factory / Collider
SuperKEKτ
Far future R&D