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The LANL ADVANCED ACCELERATORAPPLICATIONS PROJECT

Dale SchrageLANL

Workshop on the AdvancedDesign of Spoke Resonators

Los Alamos, NM, USAOctober 7 and 8, 2002

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AAA PROGRAMAuthorized by Congress to begin in fiscalyear 2001, the DOE Advanced AcceleratorApplications (AAA) program was created toaddress pressing nuclear issues facing theUnited States:

¶ nuclear energy and waste management concerns

¶ declining US nuclear infrastructure

¶ global nuclear leadership

website: http://aaa.lanl.gov/

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AAA PROGRAMDIRECTION & FUNDING PRESENTLYUNCLEAR

ADVANCED ACCELERATORAPPLICATIONS PROGRAM MAY BECOME“ADVANCED FUEL CYCLES PROGRAM”

OR, THERE MAY BE TWO SEPARATEPROGRAMS

DECISION WILL BE LATER IN FY2003

PROPOSAL IN US CONGRESS FORACCELERATOR DRIVE TEST FACILITY

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ACCELERATORTRANSMUTATION OF WASTE

WHY SPOKE CAVITIES?TECHNICAL SUPERIORITY TO DTL &CCDTL

INDUSTRIAL FABRICATION PROVEN

COMPARABLE INSTALLED COST

LOWER OPERATING COST

HIGHER RELIABILITY

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AAA PROGRAM FY2003PRELIMNARY PLAN

CEA/CNRS/DOE COLLABORATION

DESIGN/BID POWER COUPLER

DESIGN/SPECIFY ELECTROPOLISHINGFACILITY

ATW STUDY

NIOBIUM STUDY w/JLAB & UVA

INFORMAL COLLABORATION WITH ANL

INFORMAL COLLABORATION WITH INFN

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CEA/CNRS/DOECOLLABORATION

ELLIPTICAL CAVITIES:¶ DESIGN/PROCURE/TEST β = 0.5, 5-CELL, 704.4 MHz

CAVITIES (2ea)

SPOKE CAVITIES:¶ CONTINUE TESTS OF EXISTING CAVITIES:

LANL: β = 0.175, 2-GAP, 350 MHz CAVITIES (2ea)

CNRS: β = 0.34, 2-GAP, 352.2 MHz CAVITY

¶ DESIGN/ β = 0.125, 5-CELL, 350 MHz CAVITIES (2ea)

¶ PROCURE/TEST β = 0.125, 5-CELL, 350 MHzCAVITIES (2ea) in FY2004 & FY2005

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β = 0.125, 5-GAP, 350 MHz CAVITY

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DESIGN/BIDPOWER COUPLER

FABRICATE IN INDUSTRY

BID IN June 2003, AWARD IN October 2004

OPTIMIZED FOR ATW REQUIREMENTS

PRELIMINARY REQUIREMENTS

¶ 20 mAmps

¶ β = 0.175 (2-Gaps) - β = 0.34 (3-Gaps)

¶ Eacc = TBD (~ 8 Mvolt/meter)

¶ Power ~ 30 Kwatts

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DESIGN/SPECIFYELECTROPOLISHING FACILITY

OBJECTIVE IS TO IMPROVEPERFORMANCE OF ELLIPTICALCAVITIES

DESIGN & SPECIFY IN FY2003

PROCURE & INSTALL IN FY2004

OPERATE IN FY2005

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ATW STUDY

PERFORM LIMITED SCOPE TRADESTUDY TO CONSIDER SPOKE CAVITIES@ β ~ 0.6

¶ Collaboration with RIA Project

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NIOBIUM STUDYw/JLAB & UVA

3-YEAR PROGRAM INCOLLABORATION WITH JLAB & UVATO IMPROVE THE PROPERTIES OFNIOBIUM

EMPHASIS ON IMPROVING THEMANUFACTURING PROCESSES TOIMPROVE BATCH-TO-BATCHCONSISTENCY

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6-YEAR PLANTASK FY2003 FY2004 FY2005 FY2006 FY2007 FY2008Lab Operations • Level of Effort • Level of Effort • Level of Effort • Level of Effort • Level of Effort • Level of EffortDOE/CEA/CNRSCollaboration

• Final Lab Tests ofβ=.175 SpokeCavity

• Des/Bid β=.125Spoke Cavity

• Des/Bid PowerCoupler forβ=.125 SpokeCavity

• Des/Bid β=.47Elliptical Cavity

• Procure β=.125Spoke Cavities

• Procure PowerCoupler forβ=.125 SpokeCavities

• Procure β=.47Elliptical Cavities

• Design β=.60Elliptical Cavity

• Lab Test of β=.125Spoke Cavities

• Lab Test of PowerCoupler forβ=.125 SpokeCavities

• Lab Test of β=.47Elliptical Cavities

• Procure β=.60Elliptical Cavities

• Concept ofCryostat forβ=.175 SpokeCavities

• Lab Test of β=.60Elliptical Cavities

• Concept ofCryostat forβ=.125 SpokeCavities

• Concept ofCryostat for β=.47Elliptical Cavities

• Concept ofCryostat for β=.60Elliptical Cavities

• Des/Proc ColdTest of PowerCoupler for β=.125Spoke Cavities

• Cold Test ofPower Coupler forβ=.125 SpokeCavities

Power Couplers • Des/Bid PowerCoupler forβ=.175 SpokeCavity

• Procure PowerCoupler forβ=.175 SpokeCavities

• Lab Test of PowerCoupler forβ=.175 SpokeCavities

• Des/Bid PowerCoupler for β=.60Elliptical Cavities

• Des/Proc ColdTest of PowerCoupler for β=.175Spoke Cavities

• Proc PowerCoupler for β=.60Elliptical Cavities

• Cold Test ofPower Coupler forβ=.175 SpokeCavities

• Lab Test of PowerCoupler for β=.60Elliptical Cavities

Lab Improvements • Study EpolishSystem

• Proc/InstallEpolish System

• Test EpolishSystem with APTCavities

• Des/Specify HeatTreat System

• Proc/Install HeatTreat System

• Test Heat TreatSystem with APTCavities

•

ADS Optimization • Study β=.60 SpokeCavity

• Des RF-focussedSpoke Cavity

• Beam Dynamicsof ADS Linac

• Proc RF-focussedSpoke Cavity

• ADS SystemConcept

• Lab Test of RF-focussed SpokeCavity

• Lab Test of HighGradient SpokeCavities

• ADS SystemConcept

• Lab Test of HighGradient SpokeCavities

• Lab Test of High-Gradient EllipticalCavties

• ADS SystemConcept

• Lab Test of HighGradient SpokeCavities

• Lab Test of High-Gradient EllipticalCavties