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ILC Beam Instrumentation – A Short Overview of Fermilab R&D Activities –

ILC Beam Instrumentation – A Short Overview of Fermilab R&D Activities –. Manfred Wendt Fermilab, AD-Instrumentation. The International Linear Collider. ILC Beam Parameters (nominal):. ILC Beam Instrumentation. ~ 2000 Button/stripline BPM’s (10-30 / 0.5 µm resolution)

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ILC Beam Instrumentation – A Short Overview of Fermilab R&D Activities –

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  1. ILC Beam Instrumentation– A Short Overview of Fermilab R&D Activities – Manfred Wendt Fermilab, AD-Instrumentation All Experiementers' Meeting

  2. The International Linear Collider ILC Beam Parameters (nominal): All Experiementers' Meeting

  3. ILC Beam Instrumentation • ~ 2000 Button/stripline BPM’s (10-30 / 0.5 µm resolution) • ~ 1800 Cavity BPM’s (warm, 0.1-0.5 µm resolution) • 620 Cavity BPM’s (cold, part of the cryostat, ~ 1 µm) • 21 LASER Wirescanners (0.5-5 µm resolution) • 20 Wirescanners (traditional) • 15 Deflecting Mode Cavities (bunch lenght) • ~ 1600 BLM’s • Many other beam monitors, including toroids, beam phase monitors, wall current monitors, faraday cups, OTR & other screen monitors, sync light monitors, streak cameras, feedback systems, etc. • Read-out & control electronics for all beam monitors All Experiementers' Meeting

  4. FNAL ILC Instrumentation R&D ILC Instrumentation R&D activities at Fermilab include: • Design and development of beam- and non-beam instrumentation • A Cold CM-free L-Band cavity BPM for the cryomodule • Digitizer boards: general purpose VME and high-speed HA ATCA-style • Reuse, upgrade of A0-Photoinjector beam instrumentation, e.g. BPM pickups, screen monitors, interferometer-based monitors, etc. • RF-klystron interlock system • Non-beam cryomodule instrumentation: Faraday-cup & WPM read-out to support the on-site facilities: • SCRF test stands (HTS, CC2, etc.) • A0-Photoinjector (including some new beam-line instrumentation for emittance exchange experiment) • NML test accelerator (focus is on non-beam instrumentation for startup) • ILC R&D collaboration activities: • ATF Damping Ring BPM Upgrade collaboration (KEK/SLAC/FNAL) • HOM coupler signal study collaboration at FLASH/TTF (DESY/SLAC/FNAL) • Electro-optical sampling (EOS) bunch length measurement collaboration (ANL/NIU/FNAL) • Planned: EOM-based beam phase measurement collaboration (DESY/FNAL) All Experiementers' Meeting

  5. NML Beamline Instrumentation beam trans. bunch compressor capture cavities1 & 2 doublet triplet quads dipole doublet RF-gun 3.9 Ghz cav C PS O F O O O O S B T Y B C O B O S S T O O Y O S O S T S Y S O T T T P S DRAFT phase I O low energy injector dump ILC Module 1 doublet doublet dipole beam-line for advanced beam instrumentation, e.g. EOS, Laser-wire, OTRI, cavity BPM’s,… HOM couplers O S S T B S O S O high energy intensity dump C B T O dog leg test beam-line (TBD) S Beam current / bunch charge (T:toroid) Time-of-flight or beam phase monitor Synchrotron light bunch length monitor BPM (B:button, S:stripline, C:cavity, PS:perp. stripline) Screen monitor (Y:YaG, O:OTR, C:CTR, S:slit, F:F-cup) T triplet S S dipole doublet All Experiementers' Meeting

  6. Cold L-Band Cavity BPM R&D Goal: Development of acold CM-free L-Band cavity BPM with 1 µm single bunch resolution All Experiementers' Meeting

  7. Cavity BPM Principle Problems with simple “Pill-Box” Cavity BPM’s • TM010 monopole common mode (CM) • Cross-talk (xy-axes, polarization) • Transient response (single-bunch measurements) • Wake-potential (heat-load, BBU) • Cryogenic and cleanroom requirements All Experiementers' Meeting

  8. Cold Cavity BPM Prototyping All Experiementers' Meeting

  9. A0-Photoinjection Instrumentation Button BPM Toroid Beam Phase Monitor Screen Monitors All Experiementers' Meeting

  10. VME & ATCA Digitizer R&D Generic and “fast” VME digitizer: • 5.5 / 50 MS/s sampling rate • 16 / 14 bit resolution • 12 / 8 ADC/DAC channels • 500k / 8M sample buffer per channel • FPGA programmable operation modes High-speed ATCA digitizer R&D: • 500 MS/s sampling rate • 12 bit resolution • 16 ADC/DAC channels • High-availability (HA) design • Analog front-end integration (rear transition module) All Experiementers' Meeting

  11. RF Klystron Protection Interlock Forward power 200 kW, undersampled Reflected power 200 kW VME-based RF klystron protection interlock for klystron, waveguide and input coupler signals (fwd/refl-power, temperatures, PMT arc detection, etc.) 59.1 ns detection time! All Experiementers' Meeting

  12. ATF Damping Ring BPM Upgrade Upgraded BPMs ATF DR BPM Upgrade Collaboration with help of the force of “Joda”Goal: 0.1 µm resolution to achieve < 2 pm vertical emittance in the ATF damping ringAchieved in March 07: 0.6 µm All Experiementers' Meeting

  13. HOM Coupler Signal Studies HOM Studies CollaborationBeam-based cavity alignment,HOM BPM system (~ 5 µm res.) All Experiementers' Meeting

  14. EOS Bunch Length Measurement Electro-optical sampling (EOS) by temporal decoding EOM Studies Collaborationat the ANL Advanced Wakefield Accelerator (AWA)Goal: Bunch length measurement R&D All Experiementers' Meeting

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