ILC Test Facilities - Fermilab

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					Americas




                ILC Test Facilities

                   Sergei Nagaitsev
                       Fermilab


July 25, 2007
                Fermilab ILC School   Slide 1
                International Linear Collider
Americas

   New energy frontier machine proposed for HEP
   Parameters
   • Electron-Positron Collider
   • Ecm adjustable from 200 – 500 GeV

   • Luminosity  ∫Ldt = 500 fb-1 in 4 years
   • Energy stability and precision below 0.1%
   • Electron polarization of at least 80%
   • The machine must be upgradeable to 1 TeV
July 25, 2007
                   Fermilab ILC School            Slide 2
                           Overview
Americas

       • The ILC is based upon a Superconducting
         Radio Frequency (SRF) linacs of
         unprecedented scope ( length=23 km, 1680
           Cryomodules, 14,560 SRF cavities, 31.5 MV/m)




                               ~30 km
July 25, 2007
                   Fermilab ILC School             Slide 3
                  ILC ML Beam Parameters
Americas

        Parameter               Value      Parameter               Value
        Initial Beam energy     15 GeV     Initial gex             8.4 mm
        Final Beam energy       250 GeV    Final gex               9.4 mm
        Particles per Bunch     2 x 1010   Initial gey             24 nm
        Beam Current            9.0 mA     Final gey               34 nm
        Bunch Spacing           369 ns     sz                      0.3 mm
        Bunch train length      969 ms     Initial sE/E            1.5%
        Number of bunches       2625       Final sE/E              0.1%
        Pulse repetition rate   5 Hz       Beam phase wrt RF crest 5o


   Average beam power is 11 MW / beam  wall plug to beam
   efficiency is crucial  Superconducting RF
July 25, 2007
                        Fermilab ILC School                             Slide 4
                ML basic building block
Americas


      ILC RF Unit: 3 CM, klystron, modulator, LLRF




  Baseline design now has 2 CM with 9 cavities, 1 CM with 8 cavities + quad

July 25, 2007
                     Fermilab ILC School                            Slide 5
                        Issues for ILC linac
Americas
   • Key issues for ILC Physics
         – Machine Energy, Luminosity, Availability
   • Technical Challenges
         – Achieving high gradient in SRF cavities with a reproducible process
         – Building cryomodules with these cavities that meet ILC specification
         – Developing a reliable and efficient RF power source
         – Transport and focus beams at the IP
         – Industrialization of high volume components
         – Cost !
   • The Global Design Effort is addressing these challenges via
     a worldwide R&D program with specific goals (see M. Ross’
     talk)
   • Key to achieving these goals are evolving ILC Test
     Facilities, the subject of this talk
July 25, 2007
                       Fermilab ILC School                              Slide 6
Americas
                          Task Forces
        •   S0/S1 – Cavity and cryomodule
        •   S2 – RF unit system tests
        •   S3 – Damping Rings
        •   S4 – Beam Delivery System

        • S5 – Positron Source
        • S6 – Controls and LLRF
        • S7 – RF sources

July 25, 2007
                   Fermilab ILC School      Slide 7
                   Major International Test Facilities
Americas

        • Damping Rings
                – ATF, CESR-TA, KEKB, PEP-ii
                – S3: Electron cloud; ions; low emittance; kickers
        • Main Linac
                – FLASH, XFEL, STF, ILC-TA, ESA, Zeuthen
                   • Rf unit; heat loads; HOM’s; LLRF; rf sources
                – S2, S6, S7
        • BDS
                – ATF2, ESA
                   • S4: FFS & MDI design; Small spot tuning

July 25, 2007
                         Fermilab ILC School                         Slide 8
                Cavity and Cryomodule Goals
Americas

    • The GDE has established project wide R&D goals for ILC
      cavities and cryomodules
    • S0 goal: Establish a process & controls to reliably
      achieve 35 MV/M in bare cavity tests (80% yield)
    • S1 goal: Complete an ILC Cryomodule with all cavities at
      working at accelerating gradients >31.5 MV/M (Average)




July 25, 2007
                   Fermilab ILC School                      Slide 9
                          SCRF Infrastructure
Americas
  • Bare cavities
        –   Fabrication facilities (Electron beam welder, QC, etc)
        –   Surface treatment facilities BCP & Electro-polish facilities (EP)
        –   Ultra clean H20 & High Pressure Rinse systems
        –   Vertical Test facilities ( Cryogenics + low power RF)
  • Cavity Dressing Facilities ( cryostat, tuner, coupler)
        – Class 10/100 clean room
        – Horizontal Test System (cryogenics and pulsed RF power)
  • String Assembly Facilities
        – Large class 10/100 clean rooms, Large fixtures
  • Cryo-module test facilities
        – Cryogenics, pulsed RF power, LLRF, controls, shielding, etc.
        – Beam tests  electron source (RF unit test facilities)


July 25, 2007
                         Fermilab ILC School                               Slide 10
                  Cavity/CM process and Testing
Americas
                                                  Fail!

          Cavity                      Surface                Vertical
        Fabrication                  Processing              Testing
                             Fail!                                      Pass!
                Horizontal             HPR or               He Vessel,
                 Testing              reprocess           couplers, tuner

    Pass!

           Cold String Assembly


    Plan… Develop in labs then transfer technology to industry
July 25, 2007
                         Fermilab ILC School                            Slide 11
                            Damping Rings
Americas
                – The ATF at KEK has or will demonstrate
                  many/most of the outstanding issues
                  •   Low emittance operation
                  •   Intra-beam scattering
                  •   Ion instabilities
                  •   Instrumentation development
                – Main outstanding issue is the electron
                  cloud
                  • Studies at PEP-II, KEKB, and CESR
                – Very international program


July 25, 2007
                          Fermilab ILC School              Slide 12
                ATF Prototype Damping Ring
Americas




July 25, 2007
                    Fermilab ILC School   Slide 13
                ATF Prototype Damping Ring
Americas
        • Ongoing effort with effort from SLAC,
          FNAL, Cornell, and LBNL
                – ATF has been operating since 1997
                – Low emittance beams at 1.3 GeV
                – Many opportunities:
                  •   Instrumentation and feedback development
                  •   Tuning studies
                  •   Ion instabilities
                  •   Kicker system demonstrations
                – Large SLAC involvement since 1992
                – Big UK effort with FNAL and Cornell
July 25, 2007
                          Fermilab ILC School                    Slide 14
                    Electron Cloud Studies
Americas
        • Experimental programs at PEP-II and
          KEKB
                – Driven by ILC and Luminosity-factories
                – Extensive benchmarking of codes
                – Studies of cloud suppression techniques in
                  dedicated vacuum chambers
                  • Coatings and grooves
                  • Understanding cloud generation
                – No plans for a system test which would
                  need rebuilding the vacuum systems
                  • System tests at CERN and Frascati
July 25, 2007
                        Fermilab ILC School                Slide 15
                        KEK-B and PEP-II
Americas
        • Separate problem: calculate instability
          threshold and electron cloud generation
                – Experiments aimed at latter: quantifying
                  techniques to suppress        PEP-ii Chamber tests
                  the cloud generation
     KEK-B E-cloud Tests




July 25, 2007
                        Fermilab ILC School       PEP-ii Sample test
                                                           Slide 16
                              CESR-TA
Americas
        • CESR-TA would be a dedicated DR test
          facility
                – Positron beams  test
                  techniques to suppress
                  electron cloud
                  generation
                – Study effect in
                  wigglers where
                  expected to be
                  most important
        • Needs further consideration
July 25, 2007
                       Fermilab ILC School   Slide 17
                 Linac Test Facilities
Americas

     • S0/S1 is coordinating the cavity
       development
     • S2 provided advice on Linac System Tests
          – Regional programs: STF, ILCTA-NML, FLASH
          – Scoped at the 1 to 2 rf unit level
          – XFEL will also demonstrate many systems
            level issues
     • Plans for rf systems tests
          – ESA and Zeuthen

July 25, 2007
                  Fermilab ILC School           Slide 18
                   S2 Task Force
Americas




July 25, 2007
                Fermilab ILC School   Slide 19
                         S2 Questions
Americas
      • Single rf unit tests:
           – Check what gradient spread can be handled by
             the LLRF system.
           – Check for heating due to high frequency HOMs.
           – Check amplitude and phase stability of the RF
             with respect to the beam.
           – Check static and dynamic heat loads
      • Other tests:
           – Beam dynamics cannot be tested reasonably
           – Statistical effects like reliability and dark current
             are hard
July 25, 2007
                     Fermilab ILC School                   Slide 20
  Europe
                           DESY R&D Activities
Americas

    The TESLA collaboration centered at DESY developed the
    SRF technology adopted for ILC. DESY is the world leader

        • Cavity R&D
                – 9 cell TESLA shape (baseline for ILC)
                – Electropolishing development
                – Large grain Nb, hydroformed
        • Cryomodule and RF power Development
        • TTFII/Flash ~ RF unit test facility for XFEL
        • Industrialization of SRF technology


July 25, 2007
                         Fermilab ILC School              Slide 21
  Europe
                  TTFII/FLASH/XFEL (DESY)
Americas

      • TTFII/FLASH
           – TTFII: was originally a test facility for TESLA (ILC)
           – TTFII SRF linac now drives VUV-FEL (FLASH)
             providing light for BES users
           – Machine time still available as ILC test facility
      • XFEL (European Project)
           – Recently approved for construction at DESY
           – 20 GeV SRF linac driven light source
      • DESY Facilities (ramping up in support of XFEL)
           – Cavity fabrication, processing, test facility upgrades
           – Cryomodule fabrication  industrial training for XFEL

July 25, 2007
                      Fermilab ILC School                       Slide 22
  Europe
                                FLASH Overview
Americas




 RF gun         Diagnostics Accelerating Structures             Collimator
                                                                              Undulators

            Bunch                  Bunch
 Laser    Compressor             Compressor
     5 MeV 127 MeV                370 MeV             700 MeV                Bypass
                                                                                           Photon user
                                                                                           Experiments




                                                  250 m
July 25, 2007
                              Fermilab ILC School                                               Slide 23
                FLASH uses TESLA CM’s
  Europe
Americas




July 25, 2007
                Fermilab ILC School     Slide 24
                Performance of Recent CM #7
  Europe
Americas




     • Recent CM experience
          – CM 6 had 5 cavities over 30 MV/M ( but 2 went down WRT HTS)
          – CM 7 had 6 of 8 cavities above 30 MV/M ( encouraging)

July 25, 2007
                      Fermilab ILC School                        Slide 25
  Europe
                             TTFII/FLASH
Americas

  • ILC related performance:
        – Operations: 13% unscheduled down time (mostly RF sys)
        – Phase stability: 0.14o of 1.3 GHz or 300 fs
        – dE/E = 2.4 10-4 measured at 127 MeV
  • Plans:
        – Add 6th CM, beam energy  1 GeV/c
        – Improve electron gun (reduce dark current)
        – Add 3rd harmonic CM (FNAL), doubles FEL light output
  • FLASH operations, ILC studies, Construct XFEL !!!
        – ~30% of time is available for Accel dev and ILC R&D


July 25, 2007
                    Fermilab ILC School                   Slide 26
                XFEL RF Test Facility
Americas




July 25, 2007
                 Fermilab ILC School    Slide 27
  Asia
                                   STF (Asia)
Americas

         • Superconducting Test Facility (STF)
                – Location: KEK, Japan
                – Purpose: General SRF test facility in
                  support of the ILC
                – Status: Under construction
         • Facilities
                – Cavity fabrication, processing, test
                – ILC module fabrication
                – ILC module test facility
                – Plan: Evolve into RF unit test facility
July 25, 2007
                        Fermilab ILC School                 Slide 28
                      STF Facility
                         KEK
      Refrigerator
                                         Control Room


                                         Klystron Gallery




                                          Clean Rooms




Cryomodule Assembly        EP Facility
                                                    HPR
                STF (Superconducting Test
Americas
                        Facility)




July 25, 2007
                  Fermilab ILC School   Slide 30
                STF (Superconducting Test
Americas
                        Facility)




July 25, 2007
                  Fermilab ILC School   Slide 31
  Asia
                      STF R&D Activities ( Asia)
Americas

         • Cavity R&D
                – 9 cell TESLA shape (baseline for ILC)
                – 9 cell Ichiro cavities (goal = higher Eacc)
                – Seamless cavities (hydroformed)
                – Single cell EP R&D
         • Cryomodule & RF Power development
         • ILC RF unit test facility
         • Industrialization of SRF technology


July 25, 2007
                        Fermilab ILC School                 Slide 32
  Asia
                       Cavity R&D at KEK
Americas
   •   4 Tesla Shape cavities
   •   Processed and vertical tested
   •   3 cavities achieved ~20 MV/m                              #1 Cavity   4th Qo                  #1 Cavity   4th x-ray
                                                                 #2 Cavity   5th Qo                  #2 Cavity   5th x-ray


   •   1 achieved 30 MV/m, installed in CM         10
                                                        11
                                                                 #3 Cavity
                                                                 #4 Cavity
                                                                             2nd Qo
                                                                             3rd Qo
                                                                                                     #3 Cavity
                                                                                                     #4 Cavity
                                                                                                                 2nd x-ray
                                                                                                                 3rd x-ray
                                                                                                                               10
                                                                                                                                    5




   •
                                                                                                                                    4
                                                   Qo                                                                          10
       Performance limited by field emission       10
                                                        10                                       #1 Cav.           #2 Cav.
                                                                                                                               1000




                                                                                                                                        x-ray [mSv/h]
                                                                                                 #3 Cav.
                                                                                                 #4 Cav.
                                                                                                                               100
                                                        9
                                                   10                                                                          10

                                                                                                                               1

  •    4 Ichiro cavities                           10
                                                        8
                                                                                                                               0.1



  •
                                                                                                                               0.01
       Reentrant design lowers B at fixed Eacc               0    5          10       15    20
                                                                                      Eacc [MV/m]
                                                                                                    25           30          35



  •    Single cells: 6 examples all > 40 MV/M
  •    But… so far 9 cells are only 12-20 MV/M
  •    Limited by multipacting in end groups                                      EP
  •    End groups removed1 achieved 29 MV/M
  •    One 19 MV/m Ichiro cavity installed in CM
July 25, 2007
                    Fermilab ILC School                                                                33
                                                                                                 Slide 40
  Asia
                                       STF Plan
Americas
     • Phase 1 (2005-07) Develop SRF cavities & infrastructure
          –     Two types of cavities: TESLA and Ichiro (35  45 MV/m)
          –     Start with two 4 M cryostats (access to STF tunnel)
          –     1 cavity in each short cryostat     Now !
          –     4 cavities in each short cryostat   Sep 2007
          –     Improved cavities                   Apr 2008

     • Phase 2 (2008 – 10) Develop ILC Main Linac RF unit
          –     Built Cryomodule test facility
          –     CM Fabrication                       2009-10
          –     Build RF power test infrastructure   now-2010
          –     RF unit test                         2011

     • In parallel with phase 1,2
          – GDE S0 task force (demonstrate 35 MV/M gradient)
          – Industrialization
July 25, 2007
                          Fermilab ILC School                       Slide 34
                   Plan of STF Phase 2 beam line
  Asia
Americas
                                        ~65m

                                  ~36m




                              Toshiba




                • Phase 2 Beam ( 2011)
                   – 2 SC beam capture cavities
                   – RF gun, ( collab with FNAL)
                   – Bunch charge, structure, and
                     current similar to ILC
                                                    Existing Short Cryomodules
July 25, 2007
                       Fermilab ILC School                            Slide 35
                      R&D Activities (Americas)
Americas

         • Cavity R&D
                – 9 cell TESLA shape (baseline for ILC)
                – Large grain Nb (TJNL, FNAL)
                – Electropolishing (Cornell, TJNL, ANL/FNAL)
         •      Cryomodule design & fabrication (FNAL)
         •      RF power development (SLAC)
         •      ILC RF unit test facility (FNAL)
         •      Industrialization just starting

July 25, 2007
                        Fermilab ILC School                Slide 36
                    U.S. Cavity R&D = National effort
Americas                                  A7 - Vertical Qualify Test Data


                        JLab10
                                 11




                                                                                            Cornell
 Electropolish
                                 10
                            10




                                                                  Qo - First Qualify Test
                                                                  Qo - 2nd Qualify Test
                                                                  Qo- 3rd Qualify Test
                                 9                                Qo
                            10




                     Several cavities
                                 8



                                                                                            Vertical EP
                            10

                > 30 MV/m in vertical test
                                      0   10         20
                                                    Eacc (MV/m)
                                                                  30             40




                                 ANL/FNAL Collaboration




        ANL: New clean rooms,                                                                FNAL: New Vertical
                                                                                                Test Facility
          state-of-the-art EP                                                               TESTED 1st cavity on
                                                                                                  07/24/07
July 25, 2007
                            Fermilab ILC School                                                               Slide 37
                   VCTF in Industrial Building 1
Americas

            Existing IB1 cryoplant/infrastructure              VTS
              for Magnet Test Facility (MTF)                    pit
     Significant cost savings & faster implementation
           Current replacement value ~$10M

     Knowledgeable technical staff
         4 cryogenic magnet test stands               FY06:
          tested 29 superconducting magnets
         3 conventional magnet test stands            FY06:
          tested 21 conventional magnets
         Cryogenic engineering, data acquisition systems,
          diagnostic instrumentation, software and data
          management, etc.

     Continue to share cryogenic system and IB1
      infrastructure with magnet test program
           Cryogenically demanding LHC magnet production
            tests are finished

July 25, 2007
                          Fermilab ILC School                         July 11, 2007
                 VTS Cryostat/Insert Design
Americas Fermilab design of DESY/TTF/VTS
 Based on
  Added phase separator for better quality He

                                                                                 80K shields



                                                                                 Top plate insert
                                       Cryostat
                   vacuum
                    vessel                                                                       thermal baffles
                    f=42”
                                                                                                    5K shield
  radiation
  shielding
                             16’
        cavity

                                              heat exchanger   phase separator
                  helium
                                                                                                 radiation
                  vessel
                                                                                                 shielding
                   26.5”




   fiberglass
    pit liner                                                                                  cavity




   Cryostat manufactured by PHPK Technologies, Columbus OH

July 25, 2007
                               Fermilab ILC School                                      July 11, 2007
                           Cryostat photos
Americas
  September 2006: Cryostat ordered
  January 2007: He vessel ASME code stamped
  February 2007: Received at Fermilab                    Fermilab
  March 2007: Temporarily installed
  April 2007: Permanently installed
  May 2007: Cryogenic Safety Review
  May 2007: First cold test and commissioning
  July 24, 2007: First single-cell cavity tested!!!

                   Fermilab
                                                          PHPK




July 25, 2007
                        Fermilab ILC School           July 11, 2007
                 Horizontal Test System (FNAL)
Americas
  • After vertical test extensive cavity handling ensues
        – Cavity welded inside He vessel
        – Cavity opened to install main coupler    “Dressing”
        – Tuner added
  • Horizontal Test
        – First test of the cavity with high pulsed RF power
        – R&D Test bed: tuners (slow), couplers, LLRF, etc.
  • NEW HTS facility is nearly complete at FNAL
   1.3 GHz                   HTS                    RF Power for HTS
 Cavity in HTS             Cryostat
   Cryostat




July 25, 2007
                     Fermilab ILC School                       Slide 41
                               ILCTA ( FNAL)
Americas
       • ILC RF unit test facility
       • Location: Fermilab “New Muon Building” (NML)
       • Goal: Address the GDE “S2 Goals”
            – Demonstrate a complete ILC RF unit with ILC-like beam
            – Also crab-cavity R&D, diagnostics development, personnel
              training, and advanced accelerator R&D.
       • ILC-like beam
            –   3.2 nC/bunch @3 MHz
            –   Up to 3000 bunches @ 5Hz
            –   Bunch length: 300-μm rms
            –   Injector Energy: 30-40 MeV (to avoid over focusing in ILC CM)
            –   To understand CM need “known” beam parameters @ CM
                entrance and exit good diagnostics

July 25, 2007
                         Fermilab ILC School                            Slide 42
                      Location
Americas



                                      New Muon Lab




July 25, 2007
                Fermilab ILC School                  Slide 43
                                      ILCTA_NM (FNAL)
Americas
                                   Existing Building
                                       72 M
                ~ 22 M
                                                                        New ILC like tunnel
Gun       3rd har   Diagnostics                           ILC RF unit    2nd ILC RF unit


      CC I,II     Bunch
 Laser          Compressor                    Test Area
                                                                             New Building

                                                                                Test Areas
                                  RF Equipment


 •40-50 Mev Injector
 •Well characterized beam
 •Low energy test area (e.g. 3.9 GHz Crab cavities)                          new 300 W
 •New bldg for diagnostics & AARD                                            cryo plant
 •Also houses new large cryo plant
July 25, 2007
                                   Fermilab ILC School                              Slide 44
                Stage 1: 1st CM (early CY08)
Americas




                                                     A used 3 MW Klystron,
                     CC2 RF system
                                                    10 MW, 1.5 ms modulator




   Capture cavity 2 in its final      Type 3+ cryomodule
    location for the injector



July 25, 2007
                         Fermilab ILC School                         Slide 45
                            A0 Photo Injector
Americas
  • The A0 Photo Injector built in collaboration with DESY as part of the
    TESLA collaboration ( essentially a copy of TTFI)
  • In operation since late 90’s
  • Two klystron-based RF systems power the RF Gun & Capture Cavity
  • Built a second capture cavity (CCII) using high gradient DESY cavity
  • A0 RF assets and CCII will be moved to NML in 2008




  RF Gun prior to
      solenoid
    installation    Capture Cavity and beamline          Capture Cavity-II

July 25, 2007
                     Fermilab ILC School                            Slide 46
                                 ILCTA Plans
Americas
      • Effort is Funding limited phased approach
      • Cryomodule delivery
           – 1st (Type 3+) cryomodule built from “kit” of DESY parts in late 2007
           – 2nd (Type 3+) CM – 2008 built with U.S. processed cavities
           – 3rd (ILC Type 4) CM – 2009 all U.S. components
           – Replace all three CMs with ILC Type 4+ in FY2010
      • FY07: Start as a Cryomodule Test Stand
      • FY08: move A0 photoinjector, start civil construction for new bldg
      • FY09: 1st beam operation, 2-3 CM, low rep rate operations
      • FY10: replace all 3 CM with ILC type CM
      • FY11: install new refrigerator, ILC RF Unit operations
      • Collaboration: DESY, INFN, ANL, Cockroft, NIU, Rochester, KEK


July 25, 2007
                         Fermilab ILC School                                  Slide 47
                         ILCTA_NML@FNAL
Americas                                               Cavities for 1st
                                     NML: June 07       CM @ FNAL




       NML Building




    1st of 2 refrigerators     Parts for 1st CM      FNAL Clean Room
      each 60 W@1.8K               at DESY          & CM assembly Area

July 25, 2007
                       Fermilab ILC School                     Slide 48
                A facility to test ILC baseline and alternative
                                     designs
Americas
        • Many groups in the US and world-wide are
          looking for a place to test their ILC-related
          designs.
           – Need beam at 200-800 MeV, need space
             to set up tests
        • Baseline design:
           – “Keep alive” positron source (ANL)
           – SC undulator (Cornell)
           – Crab-cavity (SLAC, Cockcroft Inst)
        • Alternative designs:
           – New HOM coupler design (MIT)
July 25, 2007
                        Fermilab ILC School                       Slide 49
                    Cryomodule Test Stand
Americas

        • We know we will need it eventually. …Need by FY2011
        • Location yet undetermined
        • A 500 sq meters, 32m x 16m, building required. Includes some
          utility and access space
        • Much larger than a typical Fermilab magnet test stand due to the
          shielding cave
        • Comparable in scope to Stage-1 of NML
        • Motivations for cryomodule tests
                –   Mechanical checks
                –   Alignment of tubes, flanges, etc.
                –   Leak checks of all volumes
                –   Conditioning of main RF-couplers
                –   Cryo load measurement, Q and Eacc
                –   SC magnet power test
                –   Dark current measurements

July 25, 2007
                            Fermilab ILC School                      Slide 50
                XFEL Module R&D Test Stand
Americas
        From Yury Bozkho, Bernd Petersen (DESY)




July 25, 2007
                     Fermilab ILC School          Slide 51
                SLAC ESA RF Test Facility
Americas
      L-Band Test Stands: Existing (green), FY07-08 (blue), FY09 (yellow)




                                                 ESA




                                                        LCLS
                                                ESB
                                              (NLCTA)




July 25, 2007
                      Fermilab ILC School                            Slide 52
                      Beam Delivery System
Americas
        • See Andrei Seryi’s talk tomorrow
                – The ATF2 at KEK will demonstrate many
                  systems level issues in FFS (and others)
                  •   FFS optical solutions
                  •   Beam instrumentation
                  •   FFS tuning and beam line alignment
                  •   High availability power supplies
                  •   SC quadrupoles
                – The ESA is used to study MDI issues
                  • Collimator wakefields
                  • IR diagnostics and signals

July 25, 2007
                          Fermilab ILC School              Slide 53
                                  ATF2 at KEK
Americas


• Demonstrations of:
   – Optics design                                      ILC like optics at ATF-2

   – RF BPMs
   – Magnets and movers
   – HA power supplies



                New final focus




July 25, 2007
                           Fermilab ILC School                                     Slide 54
         http://lcdev.kek.jp/ILC-AsiaWG/WG4notes/atf2/proposal/public/atf2-web.pdf
                End Station A at SLAC
Americas


  3 runs thus far
  expect 3 more
  through FY08

Schedule beyond
FY08 is not clear




                                    Collimator design, wakefields (T-480)
                                     BPM energy spectrometer (T-474)
                                  Synch Stripe energy spectrometer (T-475)
                                              IP BPMs, kickers
July 25, 2007                        EMI (electro-magnetic interference)
                    Fermilab ILC School          IR Mockup           Slide 55
                           Summary
Americas

    • The International Linear Collider will employ an SRF
      linac of unprecedented scope
    • Cavities & Cryomodules are cost drivers for ILC
    • There are many issues to be addressed to
      demonstrate the required performance for ILC
    • All three regions have mounted large R&D programs
      to explore these issues
    • Extensive infrastructure is needed to support this
      R&D and ILC industrialization
    • Large scale RF unit test facilities are a key
    • Lots of progress & ambitious plans

July 25, 2007
                  Fermilab ILC School                 Slide 56

				
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