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STF General Schedule

K.Yokoya

EC at KEK, Sep.4.2008

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Boundary Conditions

• GDE Plan– TDP1 ~ July 2010– TDP2 (end of) 2012

• What must be done at KEK-STF– S1-Global– Quantum Beam Project– STF2

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S1-Global• Goal

– Establish 31.5MV/m in average– Demonstrate plug-compatibility

• An important item in TDP1(though cannot be completed by July 2010)

• Structure– Module C

• cryostat from INFN• cavities: 2 from FNAL, 2 from DESY

– Module A• cryostat: same as STF1 module A• cavities: 4 from KEK (existing 4 cavities will be replaced)

upstream downstreamModule C Module A

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• Would like to form an international team for– design– installation– operation

• FNAL/DESY cavities– expect to get them by ~Oct.2009– in what form?

• INFN cryostat : expected about the same time

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量子ビーム（ Ryoushi Biimu, Quantum Beam ） Project• A new budget framework of MEXT/JST

– For beam technology innovation ready for realization– Industries must be involved– 5 year plan. Max. 5 OkuYen per year

• We proposed a project “High-Intensity Compact X-ray Source” which includes – RF gun– Laser-Compton scattering– SC acceleration

• And were accepted. (Almost guaranteed every year till JFY2012)• 4.5 OkuYen for JFY2008 but this includes

– Overhead (23%)• But a good news is that we can employ staffs for 5 years by using this overh

ead • Planning to add 4 persons for SC (e.g., 2 for cavity, 1 for cryomodule, 1 for c

ryogenics) – Budget for other fields such as ERL– Budget for participating universities

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High-Intensity Compact X-ray Source

• Must be demonstrated by JFY2012• Includes 25 MV SC acceleration and deceleration (but perhaps,

deceleration can be omitted) • Beam current (9mA) and pulse length (1ms) same as ILC, but bunch

distance factor of ~50 smaller

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• Better to combine with STF2 for saving manpower and money– Build QB in STF tunnel– Identify 25MV acceleration cavity = STF capture cavity, though QB does

not need 2 cavities– Can share the RF gun (but not the laser --- different pulse structure)

• But the price is the schedule delay– Interruption for at least half a year, likely ~1 year

(installation of QB beamline and tuning for X-ray)– To minimize the delay, plan to finish QB before 2012 summer vacation.

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STF2• ILC 1 RF Unit + injector (RF gun, capture system)

• Establish the reliability of the system

• Big step to industrialization

• Detail under planning. Need one more month.

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• Infrastructure– Some reinforcement of EP (Nomura KEK)– Long-module related

• clean room• assembly area• pathway to underground

• Budget and Manpower– ~40 OkuYen needed– Expect little increase of manpower– Out-sourcing

• Schedule– Installation can only start in 2nd half of 2012 (due to Ryoushi Biim

u)– Debating whether interim operation (1 module) is needed

• feedback to the design : realistic?– Cavity production

• First batch : 11 cavities (2 for capture, 9 for module #1)• 2nd batch (17 cav.) : when? (KEK and industry capacity)

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