ILC R

1
ILC RD at FermilabH. Carter

• Main Linac EDR Cavities Cryomodules
• Participate in the development of the ML
  document sections dealing with
• cavities and cryomodules as well as cryogenic
  systems
• Develop cavity and CM engineering designs that
  incorporate
• cost reduction methods
• value engineering principles
• design for manufacture techniques

• Cavity QC and Tuning
• Mechanical inspection and measurement
• of formed half cells
• RF measurements (bead-pull) and
• tuning of completed cavities
• An automated tuning machine (DESY
• design) is planned for FY08

• 1.3GHz Single Cell Processing
• 12 single cell cavities being procured (6 are
• in house at this time)
• Processing will occur at ANL facility
• HPR will occur at FNAL A0 facility
• Full thermometry system to support this
• program is under construction

• Cavity Fabrication
• Procure sufficient 9-cell 1.3GHz
• cavities in FY08 (24) FY09 (48) to
• support the ILC S0 goal of achieving
• a reproducible gradient of 35MeV/m
• Continue to work to develop U.S.
• cavity fabricators
• Explore alt. fabrication strategies

See Nandhinis Poster for Further Details

• ACD Cavity Shapes
• U.S. main focus on Tesla Shape
• however two alternate designs
• are being explored
• Reentrant shape (Cornell)
• Low Loss shape (JLab)

• Cavity Horizontal Test
• Commission and operate HTS in support
• of dressed cavity testing for
• 3.9GHz CM Project
• 1.3GHz CM Program

• RD on Cavity Processing
• Mechanical Polish (tumbling) for bulk material
• removal (first 120-180 microns)
• Systematic study of EP process (S0 plan)
• Nine cavities (3 from each region) are
  interchanged
• and regionally processed and tested
• Additional processing parameter studies are
• planned in the Americas and Asian Regions

• Cavity Failure and Improvement of
  Manufacturing Yield
• Goal is to achieve gt90 yield in manufacturing
  and processing
• Present world wide yield is lt50
• Requires focused RD to study failure mechanisms
  related to
• Raw materials
• Manufacturing processes (Rolling, forming, EBW,
  etc.)
• Cavity processing (BCP, EP, and HPR)

See Andy Hockers Poster for Details
2
ILC RD at FermilabH. Carter

• SCRF Materials RD
• Niobium Material
• RRR measurements
• Eddy current scanning
• Surface profilometry
• Microhardness testing
• Mechanical properties (warm and cold)
• Alternate niobium material
• Large grain and single crystal materials
• Formability
• Weldability

• Cavity HPR Systems
• Existing A0 System for single cell 1.3GHz and
• 9-cell 3.9GHz cavity rinsing
• Single cell and nine-cell 1.3GHz system (based
  on
• the Cornell HPR design) under development and
• planned to be operational at ANL in early CY08
• State-of-the-art system design under
  consideration
• and planned for acquisition and installation at
• FNAL in FY09

• Industrial Development
• Continued development of US. Vendors in FY08-09
• in the areas of
• Cavity fabrication (both single and 9-cell)
• Helium vessel fabrication
• Cavity processing (EP and BCP)
• Power coupler fabrication
• Vacuum vessel and cold mass manufacture

ILCTA_NML
CM-Related Functions -Receive cryomodule
assembly from CAF-ICB -Install cryomodule in
NML test cave -Operate cryomodule as part of
the NML test accelerator -Perform a complete
RF unit test

• Cavity and Cryomodule Processing
• and Testing Infrastructure
• A next generation, pre-production processing
  facility
• capable of 100 process cycles/year is being
  designed
• Design and construction expected to take 2 years
  

Cavity Processing

• Planned Facility Upgrades
• FNAL
• VTS upgrade to three test pits
• HTS upgrade to two units, one capable of
• simultaneous testing of two cavities or one
• cavity plus a quad
• In FY09 start construction of a cryomodule test
• stand patterned after the DESY test stand
• ANL Processing Facility
• Addition of PLC controls to EP