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New Muon Lab SCRF Test Facility

Sergei NagaitsevOct 15, 2007

fILC S2 recommendation

• ILC S2 task force (string test definition) recommends: the minimum size system test needed to confirm the performance of a new design is a single RF unit with ILC like beam.– ILC RF unit is 3 CMs powered by a 10 MW MBK

• Many tests are statistical in nature, a longer string test with several RF units would be better.

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Rough S2 Schedule

PhaseCompletion date Description

0 2005TTF/FLASH, not final cavity design, type 3 cryomodule, not full gradient, has beam

0.5 2008 Extra tests at TTF/FLASH with same type cryomodules as phase 0

1 20081 cryomodule, not final cavity design, type 3 cryomodule (and/or) STF type cryomodule, not full gradient, no beam

1.1 2009

1 RF unit, not all final cavity design, not all type 4 cryomodules, not full gradient, beam not needed for tests, but should be built so it and the LLRF are debugged for the next step

1.2 20101 RF unit (replacing cryomodules of phase 1.1), final cavity design, full gradient, type 4 cryomodules, with beam

1.3 20111 RF unit (replacing cryomodules of phase 1.1), final cavity design, full gradient, type DFM cryomodules, with beam

1.4 2011Tunnel mockup above ground. 1 RF unit perhaps built with parts taken from earlier tests. Includes RTML and e+ transport, no beam

2 2013N RF units at one site (of the final ILC?) as a system test of final designs from multiple manufacturers, no beam

3 2013 XFEL

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• 1st Cryomodule (2007)– Assemble a TESLA TTF type III CM from DESY “kit” – Cavities built and fully tested by DESY

• 2nd Cryomodule (2008)– Also TTF type III cryomodule– Cavities are processed and tested in the US– Electropolished and tested at JLAB, Cornell, and ANL/FNAL– Cryostat and cold mass from Zanon in Europe

• 3rd Cryomodule (2009)– 1st type IV ILC cryomodule built anywhere– Parts built in U.S. industry

• 4th-6th Cryomodules (2010-11)– Build ILC RF unit in U.S.– Transfer knowledge gained to Industry

Fermilab cryomodule plan

fNML

• NML is a facility to be located in the existing building at Fermilab (New Muon Lab)

• New Muon Lab building is part of Fermilab’s ILC Test Areas (ILCTA_NM)– Other areas are: MDB (horizontal SCRF cavity test stand),

IB1 (vertical test stand) etc.

• The first NML user will be the ILC program.– The cryomodule tests are also essential to Project X (β=1)– The Accelerator R&D (AARD) portion will first piggy-back

on these programs; its share will increase with time

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fFermilab NML plans

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• Phase-1 (FY07 - FY08)– Prepare Facility for Testing of First Cryomodule (CM1) without

Beam• Infrastructure, RF Power, controls• Cryogenics (Refrigerator #1) => reuse of existing TeV

refrigerator

• Phase-2 & 3 (FY08 - FY10)– Install Gun, Injector, CM2 and CM3, Test with Beam

• New RF Gun• Move A0 Photo-Injector to NML and Install Test Beamlines• Extend Building to fit Third Cryomodule• Cryogenics (Refrigerator #2 )• Upgrade RF System to 10 MW

• FY11 and beyond run ILC RF unit with full ILC parameters

• Concern: to run at 5 Hz need a new cryoplant (300 W at 2K). Money for it is not in FY08 or in FY09??. Two year lead time.

fPhase-1 Layout of NML

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Cryomodule-1 (CM1) (Type III+)

Capture Cavity 2 (CC2)

CC2 RF System 5 MW RF System for CM1

fOverall layout of New Muon Lab

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CryomodulesCapture Cavity 1 (CC1)

CC2

Gun RF SystemCC1 & CC2 RF

RF Gun

5MW RF System for Cryomodules

Space for 10 MW RF System

fNML building extension

• Began Design of NML Extension with CF&S Group (FESS)• Room for 6 Cryomodules (2 RF Units)• Expanded Diagnostic and AARD Test Area• Cryoplant (300W)• Possible 2-Tunnel Design to Mock-up ILC Design

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fCurrent photo of NML

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fNML summary• NML is being constructed to address the ILC S2 R&D list, to

test ILC baseline and alternative components, and to conduct AARD.– The A0 photoinjector will be part of the NML facility

• Progress is resource limited– FY07: 4.9M$ (M&S direct), 40 FTE’s– FY08: anticipate similar resources

• Collaborations:– SLAC will supply RF distribution system. May be a model for

Project X.– ANL, DESY, KEK, INFN

• Already have 2 graduate students in accelerator physics working on NML design.

• AARD program is still developing– Had a workshop in Nov 2006 to “gauge” outside interest

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