Скачать презентацию Instrumentation Mike Church Manfred Wendt Outline f Скачать презентацию Instrumentation Mike Church Manfred Wendt Outline f

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Instrumentation Mike Church Manfred Wendt Instrumentation Mike Church Manfred Wendt

Outline f Fermilab • Motivation • Resources • Technical progress / accomplishments – – Outline f Fermilab • Motivation • Resources • Technical progress / accomplishments – – – Cold L-Band cavity BPM for ILC cryostat HOM coupler signals as beam monitor Developments on beam signal processing HINS beam diagnostics Longitudinal beam diagnostics at the A 0 -Photoinjector SRF cryomodule support • Plan for next two to three years (use of ARRA funds) – Essential beam instrumentation for the NML test linac. – Examples of US made beam diagnostics. • Collaborations • Technical Milestones • Conclusion May 18 -19, 2009 DOE SRF Review 2

f Motivation beam source beam monitors DUT: cryomodule(s) Fermilab beam monitors outgoing beam incoming f Motivation beam source beam monitors DUT: cryomodule(s) Fermilab beam monitors outgoing beam incoming beam • Characterization of SRF cryomodules and technologies (1. 3 GHz & 325 MHz) under realistic beam conditions: – The particle beam serves as the ultimate “test instrument”. – Beam diagnostics are used to compare incoming and outgoing beam parameters, e. g. beam intensity, orbit, profile (emittance), energy, jitter, HOMs, etc. , to understand error sources and problems (misalignment of cavities, dark current issues, RF noise & phase mismatch, calibration inconsistencies, etc. ). • Support of instrumentation related SRF diagnostics – RF klystron protection systems, BLM-based machine protection system. – Wire position monitor (WPM) system for the 1. 3 GHz cryomodule. – High energy Faraday-cup, HOM diagnostics, etc. May 18 -19, 2009 DOE SRF Review 3

f Resources • AD-Instrumentation Department – Team of ~30 members (tech. , EE, CP, f Resources • AD-Instrumentation Department – Team of ~30 members (tech. , EE, CP, phys. ) – Support of Run II beam diagnostics – RD&D for Pr. X & ILC beam instrumentation, test beds are A 0 PI, HINS, NML, (ATF, FLASH). – Collaborations (DESY, KEK, ORNL, BNL, LBNL, and others). • SRF beam instrumentation interfaces – – Beam dynamics requirements (APC) Mech. and techn. environment (TD, AD-MSD) Data acquisition, timing (AD-Controls) Reference and clock signals (AD-LLRF) May 18 -19, 2009 DOE SRF Review Fermilab APC AD MSD Instr. Controls RF Team leaders: N. Eddy (Phys. ) V. Scarpine (Phys. ) R. T-Keup (Phys. ) J. Zagel (EE) J. Crisp (EE) P. Prieto (EE) D. Voy (CP) 4

Technical Progress f Fermilab • Beam instrumentation and diagnostics – Design of a high Technical Progress f Fermilab • Beam instrumentation and diagnostics – Design of a high resolution, cold L-Band CM-free cavity BPM for the ILC cryomodule (ILC beam parameters). – Development and beam studies of HOM diagnostics at the SRF DESY FLASH test linac. – Development of beam detectors and signal processing systems for BPMs, toroids, etc. Successful beam tests at the A 0 PI, HINS and KEK ATF damping ring. – Support of beam instrumentation for the emittance exchange experiment (EEX) at the A 0 -Photoinjector. • Support of SRF cryomodule diagnostics – Wire position monitor (WPM) system – High-energy Faraday cups – RF klystron protection interlock May 18 -19, 2009 DOE SRF Review 5

Cold ILC L-Band Cavity BPM f Fermilab Window – Ceramic brick of alumina 96% Cold ILC L-Band Cavity BPM f Fermilab Window – Ceramic brick of alumina 96% εr = 9. 4 Size: 51 x 4 x 3 mm Frequency, GHz, dipole monopole 1. 468 1. 125 Loaded Q (both monopole and dipole) ~ 600 Beam pipe radius, mm 39 Cell radius, mm 113 Cell gap, mm 15 Waveguide, mm 122 x 110 x 25 Coupling slot, mm 51 x 4 x 3 May 18 -19, 2009 DOE SRF Review N type feedthroughs, 50 Ohm 6

L-Band Cavity BPM (cont. ) May 18 -19, 2009 DOE SRF Review f Fermilab L-Band Cavity BPM (cont. ) May 18 -19, 2009 DOE SRF Review f Fermilab 7

HOM Couplers as “Beam Monitors” f Fermilab Beam phase measurement HOM Beam-based Cavity Alignment HOM Couplers as “Beam Monitors” f Fermilab Beam phase measurement HOM Beam-based Cavity Alignment Measurement 50 change in set point • HOM as BPM – TE 111 -6 NB read-out – SVD orthogonalization – ~5 µm resolution • HOM as Phase Monitor – TM 010 /110 wideband read-out – <0. 10 @ 1. 3 GHz resolution May 18 -19, 2009 DOE SRF Review 8

Signal Processing Developments f Fermilab BPM Resolution (narrowband mode) • ATF damping ring as Signal Processing Developments f Fermilab BPM Resolution (narrowband mode) • ATF damping ring as test bed – Achieved <10 µm single pass (TBT mode), ~200 nm NB resolution – Automatic gain calibration (slow drift compensation) – To be applied for A 0 PI, HINS, NML, etc. May 18 -19, 2009 DOE SRF Review 9

Bunch Length Diagnostics f Fermilab A 0 PI OTR bunch length measurements – Streak Bunch Length Diagnostics f Fermilab A 0 PI OTR bunch length measurements – Streak camera – Martin Puplett interferometer May 18 -19, 2009 DOE SRF Review 10

SRF Cryomodule Support f Fermilab WPM System Faraday Cup RF Protection May 18 -19, SRF Cryomodule Support f Fermilab WPM System Faraday Cup RF Protection May 18 -19, 2009 DOE SRF Review 11

Plan for the next 2 -3 yrs f Fermilab • Beam instrumentation and diagnostics Plan for the next 2 -3 yrs f Fermilab • Beam instrumentation and diagnostics is focused on test beam facilities – Fermilab: A 0 PI, HINS, NML, MI; DESY-FLASH, KEK-ATF. • Finalize, improve, maintain started activities – Cold BPM, WPM, RF interlock, signal processing, HOM, F-cups. • Design, development and manufacturing of essential beam instrumentation systems for NML & HINS – – Button-style BPMs for the 1. 3 GHz cryomodule and warm sections. Stripline BPMs for HINS Beam intensity monitors (toroids, WCM) Beam profile monitors (OTR/YAG screens, multiwires, broadband F-cup) • ARRA funds for NML beam diagnostics – Investment in mature beam detectors, established US technologies. – Mandatory for beam operation and SRF cryomodule beam studies. – Systems: BPMs, screen monitors, BLMs, toroids, read-out hardware May 18 -19, 2009 DOE SRF Review 12

f RF-gun NML Beam Instrumentation CC 1 B Y S FT B H CC f RF-gun NML Beam Instrumentation CC 1 B Y S FT B H CC 2 3 rd Harmonic HO B H EEX HO B T B O S O Fermilab Bunch Compressor B O O BP Y O B T BO B Y O Y B P BPO S LE Dump B B O B T Y BB F O B O B O EEX CM 1 H HH HH HE Beam-lines HH HH HH H B BPO T O B S Y B O B O B OB O O B S Y Y HE Dump B OT B O Essential NML Beam Diagnostics Bunch current toroids (T) ~5 Beam position & phase (B, BP) ~50 Beam profile screens (O, Y, S) ~30 HOM signal processing (H) >20 Beam loss monitors (not shown) ~30 May 18 -19, 2009 DOE SRF Review 13

f US made Beam Diagnostics Fermilab Beam loss monitor (BLM) Button-style (Bridgeport) BPM pickup f US made Beam Diagnostics Fermilab Beam loss monitor (BLM) Button-style (Bridgeport) BPM pickup (Fermilab) (UHV RF feedthroughs: Meggitt Safety Systems) OTR/YAG screen monitor (Radiabeam) at the PAL THz-Source Linac (Pohang, Korea) May 18 -19, 2009 DOE SRF Review 14

Collaborations f Fermilab • Collaborations in place – BNL: Laser wire scanner (finalized) – Collaborations f Fermilab • Collaborations in place – BNL: Laser wire scanner (finalized) – KEK: Hi. Rez BPM read-out system – DESY: HOM diagnostics • Collaborations in preparation – ORNL: e-beam wire, fast F-cup – LBNL: Laser diagnostics, e-cloud May 18 -19, 2009 DOE SRF Review 15

f Milestones Fermilab • FY 09: – Beam instrumentation procurements for NML • Procurement f Milestones Fermilab • FY 09: – Beam instrumentation procurements for NML • Procurement beam monitor prototypes (screen monitor & toroid), beam studies at the A 0 -Photoinjector. • Finalize technical drawings and documentation for 40 button-style BPM pickup stations at NML. • Procurement of 5 “cold” button style BPM pickups. – Beam instrumentation support for HINS & Project X • Toroids, BPMs, wire-scanners, e-beam wire & Fast F-cup (ORNL collaboration) laser-based beam diagnostics (LBNL collaboration) • FY 10: – Finalize prototype beam tests, documentation and specifications for procurement of 30 screen monitors for NML. – Beam studies of Project X instrumentation at HINS. • FY 10&11: – RD&D & manufacturing of all essential NML beam diagnostics. – Continue Project X / HINS beam diagnostics RD&D (collaborations!) May 18 -19, 2009 DOE SRF Review 16

f Funding • Fermilab ARRA funds will be used to cover a substantial fraction f Funding • Fermilab ARRA funds will be used to cover a substantial fraction of the essential beam instruments and diagnostic systems for the SRF test accelerator at the New Muon Lab (NML)building: – Beam position pickup stations (~50) • BPM body, UHV RF feedthroughs, canted-coil ground contact springs, conflat seals, screws, etc. – Diagnostic crosses with screen monitors (~30) • 6 -way vacuum cross, 2+1 stage actuator with wakefield screen, pneumatic / step motor system, OTR / Ya. G/ slit screens & mirror, optics and camera – Beam loss monitors (~30) • Plastic scintillator / PMT units – Read-out hardware • VME crates, controllers, power supplies, timing electronics, RF downconverters, VME digitizers, HV units, etc. • Based on US made / manufactured hardware – Some quotes / estimates in hand. – Delivery times 3… 9 month for most parts. May 18 -19, 2009 DOE SRF Review 17

Conclusions f Fermilab • Development of all necessary beam diagnostics for the SRF test Conclusions f Fermilab • Development of all necessary beam diagnostics for the SRF test linac at NML is currently underway. – Some instruments have been prototyped and tested with beams. – Efforts in instrumentation are successfully supporting "non-beam" SRF diagnostics, e. g. Wire Position Monitor, RF protection, and Faraday cups. • Many beam instrumentation efforts are done in collaboration with other laboratories (national and international). – We intend to pursue expansion of these collaborations. • Synergies between SRF test facilities are used efficiently – E. g. similar / same read-out systems at HINS, NML ant A 0 PI • ARRA funds will boost the realization of essential beam instrumentation required to commission and operate the NML SRF test linac. • US industry / vendors have been contacted, and are very enthusiastic to support our plans! May 18 -19, 2009 DOE SRF Review 18

Backup May 18 -19, 2009 DOE SRF Review f Fermilab 19 Backup May 18 -19, 2009 DOE SRF Review f Fermilab 19

f HINS Diagnostics BPM Toroid Fermilab RFQ Wire Water Cooled Scanners Beam Dump May f HINS Diagnostics BPM Toroid Fermilab RFQ Wire Water Cooled Scanners Beam Dump May 18 -19, 2009 DOE SRF Review 20