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Ángel Rodríguez Páramo (On behalf of ESS Bilbao team) ESS-Bilbao, 27 March 2019

System Acceptance Review of MEBT FC, EMU, WS and SC. Ángel Rodríguez Páramo (On behalf of ESS Bilbao team) ESS-Bilbao, 27 March 2019. Summary. Introduction Faraday Cup EMU Wire Scanners Scrapers Conclusions. Summary. Introduction Faraday Cup EMU Wire Scanners Scrapers Conclusions.

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Ángel Rodríguez Páramo (On behalf of ESS Bilbao team) ESS-Bilbao, 27 March 2019

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  1. SystemAcceptanceReviewof MEBT FC, EMU, WS and SC Ángel Rodríguez Páramo (On behalf of ESS Bilbao team) ESS-Bilbao, 27 March 2019

  2. Summary • Introduction • Faraday Cup • EMU • Wire Scanners • Scrapers • Conclusions

  3. Summary • Introduction • Faraday Cup • EMU • Wire Scanners • Scrapers • Conclusions

  4. Introduction ESS-Bilbao develops the MEBT as in-kind contribution to ESS The MEBT PBI Includes • Interceptive: FC, EMU, WS, SC • Non-Interceptive: BPMs, ACCTs, FCT • See S. Varnasseri talk • Control (EPICS and MC) • See I. Mazkiaran talk • LPS • See G. Harper talk The MEBT PBI operates at: • 3.63 MeV – 62.5 mA (230 kW) • Nominal Operation: 2.86 ms / 14 Hz • Commissioning Modes: • Fast Tuning: 5 μs – 14 Hz • Slow Tuning: 50 μs – 1 Hz

  5. Introduction EMU FC WS EMU/Sl EMU/Gr WS SC FC SC

  6. Introduction BI #1 Lund (Feb. 2016) PBI PDR (Jul. 2016) BI #2 Bilbao (Oct. 2016) BI #3 Trieste (April 2017) CDR (Jul. 2017) BI #4 Paris (Nov. 2017) FC Beam Tests (Jul. 2018) WS VIT (Nov. 2018) BI #5 Lund (Nov. 2018) EMU VIT (Feb. 2019) SAR (Mar. 2019)

  7. SAR Documentation • Documentation for Actuators with similar structure as SAR Charge (ESS-0680879) • FE/BE Simplified Structure • Some documentation is an update from previous reviews (CDR). • Documents already in Chess marked with @ for update.

  8. FC: Documentation

  9. EMU: Documentation

  10. WS: Documentation

  11. SC: Documentation

  12. Summary • Introduction • Faraday Cup • EMU • Wire Scanners • Scrapers • Conclusions

  13. FC: Requirements

  14. FC • The FC is designed for current measurement and as a beam stopper for MEBT commissioning modes. • The FC has been manufactured with a 1 kV repeller for SE suppression and with a graphite collector to withstand the high intensity beam. • Integration with Control & Electronics and in the ESS-Bilbao injector have been done. Integration Production Design MEBT-BI-FC91-Conceptual_Design_(ESS-0121506)

  15. FC: Integration *FC_General_Scheme.pdf *See also I. Mazkiaran & G. Harper talks

  16. FC: Actuator *PK17-5901-DT02-System_Description.pdf *Drawings & Datasheets

  17. FC: Front-End Front-End * MEBT-BI-FC42-01-FE_System_Description * MEBT-BI-FC44-Front End-Acceptance_test-v2.1 * FC_FE_Schematic_v2.1 • Active Electronics Using TIAs • Installed in Tunnel in a Hammond 512-900 box • FE range 0-80 mA • Linearity: 100 V/A • 62 mA → 6.2 V • Linearity ~0.1 mA • Step Response • Rise/Fall Time <175 ns • BG Noise ~0.02 mA • FE Noise ~0.003 mA • Cut-Off freq. > 2 MHz • Thermal Behaviour (<80ºC)

  18. FC: Back-End Back-End • Installed in Gallery in a 84 HP-2U subrack • ± 12 V PS for Front-End • ± 1 kV repeller voltage • Iseg DPR 10 106 24 10 ESH1 • Control for HV from Ecat (MC Module) * MEBT-BI-FC52-02-BE_Description * MEBT-BI-FC-54-02-FC_Back-End_End-Acceptance_Tests * FC_BE_Schematic_v3

  19. FC: Injector Test ESS-Bilbao Injector (45 keV-40 mA) Comparison to ACCTs Test Results -SE Suppression Vrep~400V Electrostatic Field Simulation - 200 V in the axis for Vrep-1 kV - SE electrons with E up to ~100 eV* GPT Simulation -SE Suppression ~400V “Design of the ESS MEBT Faraday Cup”, Under Review * Drexler et al Physical Review A 53-3, 1996

  20. FC: Considerations • FE is designed with ± 10 V output • Beam tests done using 26 dB attenuators for ADC 3111. • Small noises can filter from MEBT, FE & Control grounds. • Effects of irradiation on the graphite collector should be checked after operation.

  21. Summary • Introduction • Faraday Cup • EMU • Wire Scanners • Scrapers • Conclusions

  22. EMU: Requirements

  23. EMU • The EMU is composed by two slit and grid subsystems separated ~370 mm for measurement of the phase space in the horizontal and vertical directions. • The slits are made of graphite in order to withstand beam irradiation and have an aperture of 100 μm for minimisation of emittance reconstruction error. • 24 tungsten wires of 35 μm separated 500 μm are included in a Grid PCB. Then the Grid PCB is assembled in the actuator. DESIGN PRODUCTION INTEGRATION *ESS-0020535-Preliminary design of the ESS slit and grid system *MEBT-BI-EM91- Conceptual_Design_of_the_ESS_MEBT_EMU

  24. EMU: INTEGRATION *EMU_General_Scheme.pdf *See also I. Mazkiaran & G. Harper talks

  25. EMU: ACTUATOR *MEBT-SL_USER_MANUAL.pdf *MEBT-SL_PINOUT.pdf *MEBT-GR_USER_MANUAL.pdf *MEBT-SL_PINOUT.pdf *Drawings & Datasheets

  26. EMU: Front-End Front-End • Active Electronics Using TIAs • Installed in Tunnel in 84 HP-3U subrack • Modular Design: • Out, Tests, Power, Plane and TIA PCBs • OUT: 24 x Output Diff Channels (DB50) • TESTS: Control from MC (Plane Change, Test_OpAmp, Test_Wire) • POWER: PS from Back-End • PLANE: Input Grid Selection (Gr1 or Gr2) • TIAs: • 4 PCBs x 6 Channels • Theorical Gain: 100 000 V/A • FE range 100 nA-100 μA • < 1 μA sample average req. • Cut-Off freq. ~2 MHz *MEBT-BI-EM42-01-FE_System_Description * MEBT-BI-EM44-01-Front End-Acceptance_test * EMU_FE_Schematic_v3.2

  27. EMU: Back-End Back-End • Installed in Gallery in a 84 HP-2U subrack • ± 12 V PS for Front-End • + 5V Front-End Test Signal • ± 1 kV repeller voltage • Iseg DPR 10 106 24 10 ESH1 • Control from Ecat (MC Module) * MEBT-BI-EM52-02-BE_System_Description * MEBT-BI-EM-54-02-Back-End_Acceptance_Test * EMU_BE_Schematic_v4

  28. EMU: VIT • EMI VIT: Bilbao February 2019 (ESS-1066570) • Motion Tests • Back-End Test (Bias Voltage) • Signal Integrity • Iin 100 μA input → Vout=10 V • 24 Channels Checked • Both ADC3117 FMCs must be synchronized • Channel 24 shows an offset • Small Cross talking in some channels • Noise higher in some channels (from 20 to 100 mV) • Test Signals • 0.5 V output • PLCs

  29. EMU: Considerations • Synchronise Acquisition and all channels operative • Small noises can filter from MEBT, FE & Control grounds • EMU Grid wires integrity should be checked after on-site installation (cont. test and Test_Wire signal) • Effects of irradiation on the graphite slits and tungsten wires should be checked after operation. • Emmitance reconstruction to be studied in detail during beam commissioning (noises, scan method, etc) b) a) d) c)

  30. Summary • Introduction • Faraday Cup • EMU • Wire Scanners • Scrapers • Conclusions

  31. WS: Requirements

  32. WS • The wire scanners are designed for measurement of beam profile at 3 MEBT locations in commissioning modes. • Equipped with 34 μm carbon wire and an alignment toolkit has been manufactured for wire placing. • Each carbon wire is connected to triaxial cabling with biased voltages of ± 100 V for minimisation of signal noises. PRODUCTION DESIGN *ESS-0020237-ESS_wire_scanner_conceptual_design *MEBT-BI-WS91-Conceptual Design of MEBT Wire Scanner (ESS-0121678@)

  33. WS Actuator *MEBT-WS_USER_MANUAL.pdf *MEBT-WS_PINOUT.pdf *Drawings & Datasheets

  34. WS Acceptance FAT MEBT-WS_ELECTRICAL_TEST_v1.pdfMEBT-WS_ENCODER_TEST_v1.pdfMEBT-WS_LEAK_TEST_v1.pdfMEBT-WS_LOAD_TEST.pdfMEBT-WS_REPEATABILITY_TEST_v1.pdfMEBT-WS_RIGIDITY_TEST.pdfMEBT-WS_SWEEP_TEST_v1.pdf Continuity Motion Vacuum Wire Integrity *Acceptance Procedure similar for FC, SC & EMU

  35. WS VIT with ET Full stroke motion at max speed Signal Integrity from Fork to AFE* • Vertical Integration Test (VIT): • Nov 2018 • ESS-Bilbao Actuator • Elettra AFE & BE • ESS MC, μTCA and EPICs control *Change from LEMO FFA to Triax BNC required

  36. WS: Considerations • Change from LEMO FFA to Triax BNC required • Carbon wires are fragile • Continuity should be checked after on-site installation • Effects of irradiation should be checked after operation

  37. Summary • Introduction • Faraday Cup • EMU • Wire Scanners • Scrapers • Conclusions

  38. SC: Requirements

  39. SC • SC are designed to remove beam halo at 3 MEBT locations. • Each scraper blade will remove 0.25 % or 625 W of beam under nominal operation. • To withstand beam irradiation TZM plates over a refrigerated steel support are included. • The TZM plate is electrically insulated with a kapton foil and is connected to a triaxial cable for signal acquisition. DESIGN PRODUCTION Bustinduy et al HB2014 MEBT-BI-SC01-05-Basic_Design_(ESS0176291) MEBT-BI-SC91-06-Technical_Design_(ESS-0117567@)

  40. SC: Integration *SC_General_Scheme_v1.pdf *See also I. Mazkiaran & G. Harper talks

  41. SC Actuator *MEBT-SC_USER_MANUAL.pdf *MEBT-SC_PINOUT.pdf *Drawings & Datasheets

  42. SC: Integration Test • FAT Tests • MEBT-SC_ELECTRICAL_TEST_SC1-6.pdf • MEBT-SC_ENCODER_TEST_SC1-6.pdf • MEBT-SC_LEAK_TEST_SC1-6.pdf • MEBT-SC_PRESSURE_TEST_v2.pdf • MEBT-SC_REPEATABILITY_TEST_SC1-6.pdf • MEBT-SC_SWEEP_TEST_v3.pdf • Local Tests in Bilbao • Integration with Motion Control in EPICS • ESS-0343212 • Se also I. Mazkiaran Talk.

  43. SC: Considerations • Integration with Acq. Electronics • LEMO FFA Triax. in Scraper Actuator • Protect TZM blade from excessive irradiation during operation • SC signal calibration during commissioning • Effects of irradiation on the TZM blades should be checked after operation. • Blank flanges available if a new set of SC wants to be installed.

  44. Summary • Introduction • Faraday Cup • EMU • Wire Scanners • Scrapers • Conclusions

  45. Conclusions The FC has been produced, integrated and beam tested The EMU have been produced and the VIT performed The WS have been produced and the VIT performed The SC have been produced and Motion Control Tested Instrumentation Ready for Delivery and Installation in ESS Much work still for Installation, Integration and Commissioning in ESS

  46. Thank You! • ESS-Bilbao • Accelerator Division • Manufacturing Division • Target Division • Executive Office ESS BI & ICS Groups

  47. Questions?

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