System Acceptance Review of MEBT FC EMU WS

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

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 Me. V – 62. 5 m. A (230 k. W) • Nominal Operation: 2. 86 ms / 14 Hz • Commissioning Modes: • • Fast Tuning: 5 μs – 14 Hz Slow Tuning: 50 μs – 1 Hz

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

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)

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.

FC: Documentation Category FC Actuator Front-End Back-End 01 -Manufacturing Process Specification ESS-0088683 -MEBT-BI-FC 90 -03 -Technical_Specifications x x 02 -System Design Description and related documents and data MEBT-BI-FC 91 -05 -Conceptual_Design_(ESS-0121506@) MEBT-BI-FC 42 -01 FE_System_Description MEBT-BI-FC 52 -02 -BE_Description 03 -Interface Control Document PK 17 -5901 -DT 02 -System_Description FC_General_Scheme_v 4 04 -Verification Plan and Reports PK 17 -5901 -DT 01 FAT-Set-up-Faraday cup-system-PK 5901_00 PK 18 -5901 -RP 01 Rapport de FAT-Faraday cup-system PK 5901_00 MEBT-BI-FC 44 -Front End. Acceptance_test-v 2. 1 MEBT-BI-EM-54 -02 -FC_Back. End_End-Acceptance_Tests 05 -“as-built” designs or CAD models. 1 D_FARADAY_V 09. pdf MEBT-FC-1100 -ESS. 00 -PCK_Faraday Cup. pdf PK 5901_000 -General_Drawing. pdf FC_FE_Schematic_v 2. 1 FC_BE_Schematic_v 3 06 -Datasheets for systems and components Crouzet-70_514_182 Festo-DSBC-40 -80 -PPSA-N 3 Festo-GRLA-14 -QS-8 -D Festo-SME-8 -K-24 -S 6 Festo-VUVG-L 18 -M 52 -MT-G 14 -U-1 K 7 L SGL_Graphite_Collector AD 8065_8066. pdf AD 8397. pdf BAV 199 LT 1 G. pdf Hammond_512 -0900. pdf LM 7809 -1295546. pdf LM 79 xx_Rev 2011. pdf OP 07 DRZ. pdf Wurth_744212100. pdf Camdemboss_C 19 G 2363 S. pdf Iseg_DPR_10_106_24_10_ESH. pdf Traco. Power_TMM_24124 C. pdf Traco. Power_TMP 15512 C. pdf x x MEBT-BI-FC 42 -01 FE_System_Description MEBT-BI-FC 52 -02 -BE_Description 07 -Certificates for inspections and qualifying. PK 18 -5901 -EN 01 -Declaration_of_Conformity certifying-regulatory assessments 08 -Component Operation and Maintenance PK 17 -5901 -DT 02 -System_Description Manual

EMU: Documentation Category 01 -Manufacturing Process Specification 02 -System Design Description and related documents and data 03 -Interface Control Document 04 -Verification Plan and Reports 05 -“as-built” designs or CAD models. 06 -Datasheets for systems and components Actuator MEBT-BI-EM 90 -10 -Technical_Specifications_(ESS 0189351@) MEBT-BI-EM 91 -02 Conceptual_Design_of_the_ESS_MEBT_EMU EMU_General_Scheme_v 3 MEBT-GR_PINOUT_v 1 MEBT-SL_PINOUT MEBT-GR/SL_ELECTRICAL_TEST. pdf MEBT-GR/SL_ENCODER_TEST. pdf MEBT-GR/SL_LEAK_TEST. pdf MEBT-GR/SL_REPEATABILITY_TEST. pdf MEBT-GR/SL_SWEEP_TEST. pdf MEBT-GR-1000. PDF MEBT-GR-1100 A. PDF MEBT-GR-1200. PDF MEBT-SL-1000 B. PDF MEBT-SL-1100. PDF MEBT-SL-1200 A. PDF GOODFELLOW_W 005131. pdf LEMO_EGG-4 K-312 -CYM. pdf MEBT-BI-EM 07 -04_GRID_PCB_Description. pdf NANOTEC_BRAKE-BWA-0_35 -5. pdf NANOTEC_ST 4118 M 1804 -B. pdf OMRON_SS-01 GL 2 -3. pdf RADIALL_SHV_317580000. pdf SIKO_MB 100 -1 -0. 3 -10 -0. 01 -St-TM-AM-0. pdf SIKO_MSK 1000 -11 -M-E 1 -2 -I-1 -1. 00. pdf SOURIAU_UT 00128 SH. pdf THK_BNK 1202 -3. pdf GRID_PCB_Data. Sheets EMU Front-End Back-End x x MEBT-BI-EM 42 -01 FE_System_Description MEBT-BI-EM 52 -02 BE_System_Description MEBT-BI-EM 44 -01 -Front End. Acceptance_test MEBT-BI-EM-54 -02 -Back. End_Acceptance_Test EMU_FE_Schematic_v 3. 2 EMU_BE_Schematic_v 4 3 M_MDR_THT_10226 -5212 PL. pdf AD 8033_8034. pdf AD 8065_8066. pdf Backplane_Vero_222 -63630. pdf BAV 199 LT 1 G. pdf DIL 24 -2 C 90 -63 L. pdf OP 07 DRZ. pdf Subrack_3 U_84 HPHEITEC_EPS_Catalogue. pdf TI_TPS 7 A 4700 RGWT. pdf Wurth_744212100. pdf Camdemboss_C 19 G 2363 S. pdf Iseg_DPR_10_106_24_10_ESH. pdf Traco. Power-TMM-24124 C. pdf Traco. Power-TMM-24212 C. pdf Traco. Power-TMP-15105 C. pdf Weidmuller_179338000. pdf 07 -Certificates for inspections and qualifyingcertifying-regulatory assessments Mersen_Graphite_MEBT-SL-1104 x x 08 -Component Operation and Maintenance Manual MEBT-GR_PINOUT_v 1. PDF MEBT-GR_USER_MANUAL. PDF MEBT-SL_PINOUT. pdf MEBT-SL_USER_MANUAL_V 1. pdf MEBT-BI-EM 42 -01 FE_System_Description MEBT-BI-EM 52 -02 BE_System_Description

WS: Documentation Category WS Actuator 01 -Manufacturing Process Specification MEBT-BI-WS 90 -05 -Technical_Specifications_(ESS-0090135@) 02 -System Design Description and related documents and data MEBT-PBI-WS 91 -06 -Conceptual_Design_(ESS-0121678@) 03 -Interface Control Document MEBT-WS_PINOUT 04 -Verification Plan and Reports 05 -“as-built” designs or CAD models. 06 -Datasheets for systems and components MEBT-WS_ELECTRICAL_TEST_v 1. pdf MEBT-WS_ENCODER_TEST_v 1. pdf MEBT-WS_LEAK_TEST_v 1. pdf MEBT-WS_LOAD_TEST. pdf MEBT-WS_REPEATABILITY_TEST_v 1. pdf MEBT-WS_RIGIDITY_TEST. pdf MEBT-WS_SWEEP_TEST_v 1. pdf MEBT-WS-1000 A. PDF MEBT-WS-1100 A. PDF MEBT-WS-1200 C. pdf HIPP_KGT-F 1 -12 -02 -400 -330 -O-IT 5. pdf LEMO_EGG-4 K-312 -CYM. pdf LEMO_FFA. 0 S. 650. CLAC 42. pdf NANOTEC_BWA-0_25 -5. pdf NANOTEC_ST 4118 M 1804 -B. pdf OMRON_SS-01 GL 2 -3. pdf SIKO_MB 100 -1 -0. 3 -10 -0. 01 -St-TM-AM-0. pdf SIKO_MSK 1000 -11 -M-E 1 -2 -I-1 -1. 00. pdf SOURIAU_UT 00128 SH. pdf 07 -Certificates for inspections and qualifying-certifyingregulatory assessments Specialty_Carbon_Monofilament-Datasheet. pdf 08 -Component Operation and Maintenance Manual MEBT-WS_USER_MANUAL_v 2 MEBT-WS_PINOUT

SC: Documentation Category SC Actuator 01 -Manufacturing Process Specification MEBT-BI-SC 90 -05 -Technical_Specifications_(ESS-0117565) 02 -System Design Description and related documents and data MEBT-BI-SC 01 -05 -Basic_Design_(ESS 0176291) MEBT-BI-SC 91 -06 -Technical_Design_(ESS-0117567@) MEBT-SC_PINOUT SC_General_Scheme_v 1 03 -Interface Control Document 04 -Verification Plan and Reports 05 -“as-built” designs or CAD models. 06 -Datasheets for systems and components MEBT-SC_ELECTRICAL_TEST_SC 1 -6. pdf MEBT-SC_ENCODER_TEST_SC 1 -6. pdf MEBT-SC_LEAK_TEST_SC 1 -6. pdf MEBT-SC_PRESSURE_TEST_v 2. pdf MEBT-SC_REPEATABILITY_TEST_SC 1 -6. pdf MEBT-SC_SWEEP_TEST_v 3. pdf MEBT-SC-1000 D. PDF MEBT-SC-1100 D. PDF MEBT-SC-1200 B. PDF LEMO_EGG-4 K-312 -CYM. pdf LEMO_FFA. 0 S. 650. CLAC 42. pdf NANOTEC_BWA-0_25 -5. pdf NANOTEC_ST 4118 M 1804 -B. pdf OMRON_SS-01 GL 2 -3. pdf SIKO_MB 100 -1 -0. 3 -10 -0. 01 -St-TM-AM-0. pdf SIKO_MSK 1000 -11 -M-E 1 -2 -I-1 -1. 00. pdf SOURIAU_UT 00128 SH. pdf THK_BNK-1202 -3 RRG 2+204 LC 7 Y. pdf 07 -Certificates for inspections and qualifying-certifyingregulatory assessments TZM-MEBT-SC-1104. pdf 08 -Component Operation and Maintenance Manual MEBT-SC_USER_MANUAL_v 2 MEBT-SC_PINOUT

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

FC: Requirements Name Description MEBT invasive measurements beam modes MEBT beam current invasive calibration measurement Comment L 4 BI Requirements (ESS-0063423) All invasive measurements in the MEBT section shall be possible for beam pulse lengths of 5 microseconds at 14 Hz and 50 microseconds at 1 Hz. There shall be a possibility to measure beam current with higher accuracy for calibration purposes in the MEBT section. This measurement can be invasive. MEBT beam current invasive calibration measurement error The high accuracy beam current measurement shall have a total measurement error of less than ± 0. 1 m. A. MEBT beam current invasive calibration measurement precision The high accuracy beam current measurement shall have a precision of sigma ≤ 0. 01 m. A. MEBT beam current invasive calibration measurement integration time MEBT beam stopper The high accuracy beam current measurement time resolution, defined as the interval between independent reported measurement readouts, shall be ≤ 1 µs. The MEBT shall be equipped with an insertable beam stop. Done. A graphite collector is included for withstanding irradiation. See MEBT-BI-FC 91(ESS-0121506). Done. Linearity response is ~0. 1 m. A (see MEBT-BI-FC 44). Final Check-Out should be done during ESS MEBT Commissioning. Done. Total lab. noise ~0. 02 m. A, FE noise increment is ~0. 003 m. A (see MEBTBI-FC 44). Final Check-Out should be done during ESS MEBT Commissioning. Done. FE Cut-Off frequency >2 MHz. Done ESS-0088683 -MEBT-BI-FC 90 -03 -Technical_Specifications ESS-0036676 Faraday cup design specifications for the ESS MEBT Faraday cup ESS-0036676 Section 2. 3 ESS-0036676 Section 2. 4 The repeller electrode shall be biased with a negative voltage. The power supply shall be able to provide a voltage at least equal to 1000 Volts and be remotely controlled. The MEBT FC shall be moved in and out with a pneumatic actuator. It is mandatory to install 2 limit switches at both ends position, one will be use for motion control purposes, and the other one will be connected directly to the Machine Protection System (MPS). Done Back-End with Iseg DPR 10 106 24 10 ESH 1 Done Festo DSBC actuator, Crouzetz Limit Switches and Festo SME position sensors.

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 k. V 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. Design Production MEBT-BI-FC 91 -Conceptual_Design_(ESS-0121506) Integration

FC: Integration FC Act. FE BE MC PLC μTCA BIO BIO BIO *FC_General_Scheme. pdf *See also I. Mazkiaran & G. Harper talks

FC: Actuator Category Beam Parameters Operational Conditions Instrument Characteristics Body Cup Head Characteristics Main Components Parameter Beam Energy Beam Current Mode I: Fast Tuning Mode II: Slow Tuning Beam Power Avg. Beam Power Nominal Beam Size Nominal Beam Power Flux Temperature 20 -200 ºC Vacuum He Leak Test Rate Refrigeration Air Pressure Weight Flange to Axis Distance Position Adjustment Actuator Stroke Motion Velocity Mounting Flange Mounting Orientation External Protection Automatic Retraction Cup Head Weight Cup Head Diameter Cup Head Beam Aperture Repeller Voltage Collector Repeller Refrigerated Body Insulators Pneumatic Actuator Electro. Valve Air Flow Control Valves Position Sensor External MPS Switches Value 3. 63 Me. V 62. 5 m. A 5 μs – 14 Hz 50 μs – 1 Hz 230 k. W 16 W σx=σy=2. 5 mm 6 k. W/mm 2 Ambient <1⋅10 -9 mbar l/s 25ºC, 5 bar, 2 l/min (Max. 10 Bar) 6 -8 Bar (Max. 10 Bar) 16. 6 kg 273 mm 273 ± 5 mm 80 mm > 1 s (< 80 mm/s) CF 100 45º Protective Cover Spring Retraction ~890 g 70 mm 48 mm +/-1000 V Graphite SGL R 7550 Copper Steel Macor/Alumina DSBC-40 -80 -PPSA-N 3 FESTO - VUVG-L 18 -M 52 -MT-G 14 -U-1 K 7 L GRLA-1/4 -QS-8 -D Festo - SME-8 -K-24 -S 6 Crouzet - 83 133 035 *PK 17 -5901 -DT 02 -System_Description. pdf *Drawings & Datasheets

FC: Front-End - - Active Electronics Using TIAs Installed in Tunnel in a Hammond 512 -900 box FE range 0 -80 m. A Linearity: 100 V/A - 62 m. A → 6. 2 V - Linearity ~0. 1 m. A Step Response - Rise/Fall Time <175 ns - BG Noise ~0. 02 m. A - FE Noise ~0. 003 m. A Cut-Off freq. > 2 MHz Thermal Behaviour (<80ºC) * MEBT-BI-FC 42 -01 -FE_System_Description * MEBT-BI-FC 44 -Front End-Acceptance_test-v 2. 1 * FC_FE_Schematic_v 2. 1

FC: Back-End - Installed in Gallery in a 84 HP-2 U subrack ± 12 V PS for Front-End ± 1 k. V repeller voltage - Iseg DPR 10 106 24 10 ESH 1 Control for HV from Ecat (MC Module) * MEBT-BI-FC 52 -02 -BE_Description * MEBT-BI-FC-54 -02 -FC_Back-End_End-Acceptance_Tests * FC_BE_Schematic_v 3

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

FC: Considerations • FE is designed with ± 10 V output • Beam tests done using 26 d. B 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.

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

EMU: Requirements Name Description MEBT invasive measurements beam modes All invasive measurements in the MEBT section shall be possible for beam pulse lengths of 5 microseconds at 14 Hz and 50 microseconds at 1 Hz. Done. Graphite slits and tungsten wires are included for withstanding the irradiation. See MEBT-BI-EM 91. MEBT transverse phase space measurement The beam distribution in transverse phase space shall be measurered in the MEBT section. The measurement can be invasive. Done. MEBT transverse phase space measurement The transverse phase space measurement shall consist of one horizontal and one vertical measurement. Both measurements shall independently fulfill all requirements. Done. MEBT transverse phase space 95% emittance measurement error The transverse emittance containing 95% of the beam shall be measured with a total measurement error of less than ± 10 % of the measured value. Done. Design according to ESS-0020535. Slit-Grid distance ~373 mm. Slit 100 μm aperture. 24 x tungsten wires with 500 μm. The slit & grid can be moved in steps of 10 μm for signal reconstruction. Emmitance measurement and reconstruction should be checked during ESS MEBT Commsisioning. MEBT transverse phase space RMS emittance measurement error The transverse RMS emittance shall be measured with a total measurement error of less than ± 10 % of the measured value. See above comment. The transverse phase space measurement shall have a dynamic range of 1000. Done. Pulses from 100 n. A – 100 μA can be observed with the FC (MEBT-BI -EM 44). For currents <1 μA sample average should be done to reduce noise. Final Check-Out should be done during ESS MEBT Commissioning. MEBT transverse phase space measurement dynamic range Comment L 4 BI Requirements (ESS-0063423) MEBT-BI-EM 90 -10 -Technical_Specifications_(ESS-0189351@) ESS-0020535 - Preliminary design of the ESS slit and grid system ESS-0020535 Section 1. 3 ESS-0020535 Section 5 With a distance greater than 350 mm the error is below 2 % if the grid position error is less than 50 μm. For the slit : - An aperture of 100 μm - A thickness of 200 μm For the SEM grid : A minimum number of wire equal to 24. The grid pitch shall be better than 500 μm. The grids shall be equipped with 20 μm tungsten wire The minimum distance between the slit and the grid shall be at least 350 mm Done Grid repeteability error is < 10 μm. Done. Distance Slit-Grid ~370. Slit aperture 100 μm, thickness 200 μm 24 x wires separated 500 μm Grid wires are 35 μm diameter but correct operation is expected (max T. ~1500 K see MEBT-BI-EM 91) Actuator step 10 μm for improved performance.

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 *ESS-0020535 - PRODUCTION Preliminary design of the ESS slit and grid system *MEBT-BI-EM 91 - Conceptual_Design_of_the_ESS_MEBT_EMU INTEGRATION

EMU: INTEGRATION EMU Act. FE BE MC PLC μTCA BIO BIO BIO *EMU_General_Scheme. pdf *See also I. Mazkiaran & G. Harper talks

EMU: ACTUATOR Category Parameter Beam Energy Beam Current Mode I: Fast Tuning Mode II: Slow Tuning Beam Power Beam Parameters Beam Size Instrument Characteristics Nominal Beam Power Flux (Slits) Nominal Beam Power Flux (GR 2) Max. Wire Temperature Estimated Signal Read-Out Weight Flange to Axis Distance Hard Limits Stroke Switches Stroke Mounting Flange Actuator Pitch Motion Velocity Vacuum He Leak Test Rate Mounting Orientation External Protection Slit Dimmensions (aperture/thickness) Slit Plates Max. Grid Bias Voltage Grid Wire Type Wire Diam. Motor Brake Main Components Encoder Magnetic Band Limit Switches Value 3. 63 Me. V 62. 5 m. A 5 μs – 14 Hz 50 μs – 1 Hz 230 k. W SL 1, SL 2 σx 3. 2 mm σy 3. 8 mm σx 6. 37 mm GR 1 σy 0. 35 mm σx 0. 46 mm GR 2 σy 0. 35 mm 3 k. W/mm 2 2. 4 k. W/mm 2 1500 K 0. 1 -100 μA SL GR 15 kg 14 kg 190 mm 205 mm 175 mm 120 mm 155 mm 100 x 140 mm 2 CF 100 2 mm/rev 0. 1 -10 mm/s <2⋅10 -10 mbar l/s 0/90º Protective Cover 100 x 200 μm Mersen 2220 PT ± 1000 V GOODFELLOW_W 005131 35 μm NANOTEC ST 4118 M 1804 -B - Two Phases - Steps: 200 steps/rev - Current: 1. 8 A/phase NANOTEC BWA-0 25 -5 - Voltage: 24 V SIKO MSK 1000 -11 -M-E 1 -2 -I-1 -1. 00 - Voltage: 5 V - Resolution: 1 μm - Reference Signal: 1 mm SIKO MB 100 -1 -0. 3 -10 -0. 01 -St-TM-AM -0 OMRON SS-01 GL 2 -3 *MEBT-SL_USER_MANUAL. pdf *MEBT-SL_PINOUT. pdf *MEBT-GR_USER_MANUAL. pdf *MEBT-SL_PINOUT. pdf *Drawings & Datasheets

EMU: Front-End - Active Electronics Using TIAs Installed in Tunnel in 84 HP-3 U subrack Modular Design: - Out, Tests, Power, Plane and TIA PCBs OUT: 24 x Output Diff Channels (DB 50) TESTS: Control from MC (Plane Change, Test_Op. Amp, Test_Wire) POWER: PS from Back-End PLANE: Input Grid Selection (Gr 1 or Gr 2) TIAs: - 4 PCBs x 6 Channels - Theorical Gain: 100 000 V/A - FE range 100 n. A-100 μA - < 1 μA sample average req. - Cut-Off freq. ~2 MHz *MEBT-BI-EM 42 -01 -FE_System_Description * MEBT-BI-EM 44 -01 -Front End-Acceptance_test * EMU_FE_Schematic_v 3. 2

EMU: Back-End - Installed in Gallery in a 84 HP-2 U subrack ± 12 V PS for Front-End + 5 V Front-End Test Signal ± 1 k. V repeller voltage - Iseg DPR 10 106 24 10 ESH 1 Control from Ecat (MC Module) * MEBT-BI-EM 52 -02 -BE_System_Description * MEBT-BI-EM-54 -02 -Back-End_Acceptance_Test * EMU_BE_Schematic_v 4

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 ADC 3117 FMCs must be synchronized Channel 24 shows an offset Small Cross talking in some channels Noise higher in some channels (from 20 to 100 m. V) • Test Signals • 0. 5 V output • PLCs

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 onsite 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) a) c) b) d) Fig Description ϵnorm π mm mrad (%) a) sslit= 500 μm sgrid=500 μm nsignals=24 0. 2 (26%) b) sslit= 500 μm sgrid=500 μm nsignals=48 0. 26 (3%) c) sslit= 100 μm sgrid=100 μm nsignals=240 0. 26 (3%) d) GPT Sim 0. 27 (0 %)

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

WS: Requirements Name MEBT invasive measurements beam modes MEBT transverse beam profile measurement planes MEBT transverse beam profile RMS measurement error MEBT transverse beam profile 95% measurement error MEBT transverse beam profile measurement dynamic range MEBT transverse beam profile measurement resolution Description Comment L 4 BI Requirements (ESS-0063423) All invasive measurements in the MEBT section shall be possible for beam pulse lengths of 5 microseconds at 14 Hz and 50 microseconds at 1 Hz. The transverse beam profile shall be measurered in at least 3 locations in the MEBT section. The transverse beam profile measurement shall consist of one horizontal and one vertical measurement. Both measurements shall independently fulfill all requirements. The transverse beam profile shall be measured with a total measurement error in the RMS extension of the beam of less than ± 10%. 1 The transverse beam profile shall be measured with a total measurement error in the 95% extension of the beam of less than ± 10%. Done. 35 μm Carbon wires are included for withstanding irradiation. See MEBT-PBI-WS 91 (ESS-0121678) Done Vertical and horizontal wires. Out of Bilbao scope. The transverse beam profile measurement shall have a dynamic range of 1000. Out of Bilbao scope. The transverse beam profile shall be measured with a spatial resolution of ≤ 0. 05 mm. Done Actuator step resolution 10 μm (2 mm lead/200 steps). Repeteability <10 μm (see MEBTWS_REPEATABILITY_TEST_v 1. pdf) MEBT-BI-WS 90 -05 -Technical_Specifications_(ESS-0090135@) ESS-0020237 ESS wire scanner conceptual design ESS-0020237 Section 2. 2 The thermionic emission is threshold process. Below 1500 K in case of carbon, the emitted current can be neglected. For tungsten, the threshold is similar. Above this temperature, the emitted current density increases quickly and could perturb the measurement. Done Expected wire temp. below 1500 K using 35 μm carbon wires (see MEBT-PBI-WS 91)

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. DESIGN PRODUCTION *ESS-0020237 -ESS_wire_scanner_conceptual_design *MEBT-BI-WS 91 -Conceptual Design of MEBT Wire Scanner (ESS-0121678@)

WS Actuator Category Parameter Beam Energy Beam Current Mode I: Fast Tuning Mode II: Slow Tuning Beam Power Value 3. 63 Me. V 62. 5 m. A 5 μs – 14 Hz 50 μs – 1 Hz 230 k. W WS 1 Beam Parameters Beam Size WS 2 WS 3 Max. Wire Temperature Nominal Beam Irradiation (for WS 1) Instrument Characteristics Estimated Signal Read-Out Weight Vacuum He Leak Test Rate Flange to Axis Distance Hard Limits Stroke Switches Stroke Actuator Pitch Motion Velocity Mounting Flange Mounting Orientation External Protection Nominal Bias Voltage Max. Bias Voltage Wire Type Wire Diam. Wire Preload Motor Brake Main Components Encoder Magnetic Band Limit Switches σx 2. 4 mm σy 1. 3 mm σx 3. 9 mm σy 1. 4 mm σx 3. 6 mm σy 3. 8 mm 1500 K Ic = 0. 3 A/cm 2 Ec = 58 J/cm 2 100 -500 μA 16 kg <2⋅10 -10 mbar l/s 305 mm 260 mm 240 mm 2 mm/rev 0. 1 -10 mm/s 100 x 140 mm 2 Rect. Flange 45º Protective Cover ± 100 V ± 500 V Specialty Carbon Monofilament 34. 5 μm 30 g NANOTEC ST 4118 M 1804 -B - Two Phases - Steps: 200 steps/rev - Current: 1. 8 A/phase NANOTEC BWA-0 25 -5 - Voltage: 24 V SIKO MSK 1000 -11 -M-E 1 -2 -I-1 -1. 00 - Voltage: 5 V - Resolution: 1 μm - Reference Signal: 1 mm SIKO MB 100 -1 -0. 3 -10 -0. 01 -St-TM-AM-0 OMRON SS-01 GL 2 -3 *MEBT-WS_USER_MANUAL. pdf *MEBT-WS_PINOUT. pdf *Drawings & Datasheets

WS Acceptance FAT Continuity MEBT-WS_ELECTRICAL_TEST_v 1. pdf MEBT-WS_ENCODER_TEST_v 1. pdf MEBT-WS_LEAK_TEST_v 1. pdf MEBT-WS_LOAD_TEST. pdf MEBT-WS_REPEATABILITY_TEST_v 1. pdf MEBT-WS_RIGIDITY_TEST. pdf MEBT-WS_SWEEP_TEST_v 1. pdf Motion Vacuum Wire Integrity *Acceptance Procedure similar for FC, SC & EMU

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

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

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

SC: Requirements Name Description Comment L 4 MEBT COL Requirements (ESS-0083846) Beam collimator: collimation peak power Each jaw of the beam scraper shall be able to whistand a minimum peak power of 625 W for the nominal beam duty cycle. Beam collimator: beam size at the collimator location The calculations for the design optimization shall consider a proton beam whose distribution projected on the horizontal and vertical axis is Done. represented by gaussian distributions with sigmas are 1 and 3 mm See MEBT-BI-SC 91 (ESS-0117567) respectively in x and y. Beam collimator: number and location Scrapers shall be placed at 3 different locations in the MEBT based on the integrated lattice design. Done. TZM blades are included for withstanding the irradiation. See MEBT-BI-SC 91 (ESS-0117567) Done Actuator step resolution 10 μm (2 mm lead/200 steps). Repeteability <10 μm (see MEBTSC_REPEATABILITY_TEST_SC 1 -6) Beam collimator: position adjustment precision The scraper jaw transverse position adjustment resolution shall be better than ± 50 µm. Beam collimator: charge measurement Each scraper jaw shall be instrumented such as to measure a minimum charge of 1 nano-Coulomb integrated over a period of 50 micro second. A triax signal cable (LEMO_EGG-4 K-312 -CYM) has been included. Same as WS. Acquisition out of Bilbao Scope. Beam collimator: jaw translation range Each scraper jaw shall be movable independently such that its lower part can be located between 2 and 20 mm with respect to the beam axis. Done. Full beam pipe can be covered by each Scraper. Beam collimator: jaw position precision The jaw shall be positioned on its axis (vertical or horizontal) with a precision of better than ± 50 µm. Done. Actuator step resolution 10 μm (2 mm lead/200 steps). Repeteability <10 μm (see MEBTSC_REPEATABILITY_TEST_SC 1 -6). MEBT-BI-SC 90 -05 -Technical_Specifications_(ESS-0117565)

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 Bustinduy et al HB 2014 MEBT-BI-SC 01 -05 -Basic_Design_(ESS 0176291) MEBT-BI-SC 91 -06 -Technical_Design_(ESS-0117567@) PRODUCTION

SC: Integration SC Act. FE BE MC PLC μTCA BIO ESS *SC_General_Scheme_v 1. pdf *See also I. Mazkiaran & G. Harper talks

SC Actuator Category Parameter Beam Energy Beam Current Nominal Beam Mode Beam Power Beam Parameters Beam Size Instrument Characteristics Max. Beam Collimation Max. Beam Irradiation (SC 5&SC 6) Estimated Signal Read-Out Weight Vacuum He Leak Test Rate Refrigeration Flange to Axis Distance Hard Limits Stroke Switches Stroke Actuator Pitch Motion Velocity Mounting Flange Mounting Orientation External Protection Nominal Bias Voltage Max. Bias Voltage Blade Characteristics Cooling Block Insulators Motor Brake Main Components Encoder Magnetic Band Limit Switches Value 3. 63 Me. V 62. 5 m. A 2. 86 ms – 14 Hz 230 k. W SC 1&2 σx 1. 8 mm σy 3. 2 mm SC 3&4 σx 3. 1 mm σy 3. 8 mm SC 5&6 σx 2. 5 mm σy 0. 9 mm 0. 25 % (625 W) Pc = 80 MW/m 2 500 -1000 μA 14 kg <2⋅10 -10 mbar l/s Water at 25ºC, 5 bar, 2 l/min (Max. 10 Bar) 190 mm 80 mm 60 mm 2 mm/rev 0. 1 -10 mm/s 100 x 140 mm 2 Rect. Flange Vertical Protective Cover ± 100 V ± 500 V TZM Blade (MEBT-SC-1104 B) -54 x 52 x 5 mm plate -15º Chamfer Steel Kapton MT 300 NANOTEC ST 4118 M 1804 -B - Two Phases - Steps: 200 steps/rev - Current: 1. 8 A/phase NANOTEC BWA-0 25 -5 - Voltage: 24 V SIKO MSK 1000 -11 -M-E 1 -2 -I-1 -1. 00 - Voltage: 5 V - Resolution: 1 μm - Reference Signal: 1 mm SIKO MB 100 -1 -0. 3 -10 -0. 01 -St-TM-AM-0 OMRON SS-01 GL 2 -3 *MEBT-SC_USER_MANUAL. pdf *MEBT-SC_PINOUT. pdf *Drawings & Datasheets

SC: Integration Test • FAT Tests • • • MEBT-SC_ELECTRICAL_TEST_SC 1 -6. pdf MEBT-SC_ENCODER_TEST_SC 1 -6. pdf MEBT-SC_LEAK_TEST_SC 1 -6. pdf MEBT-SC_PRESSURE_TEST_v 2. pdf MEBT-SC_REPEATABILITY_TEST_SC 1 -6. pdf MEBT-SC_SWEEP_TEST_v 3. pdf • Local Tests in Bilbao • Integration with Motion Control in EPICS • ESS-0343212 • Se also I. Mazkiaran Talk.

SC: Considerations • Integration with Acq. Electronics • LEMO FFA Triax. in Scraper Actuator • Protect TZM blade from excessive irradiation during operation • SC signal commissioning calibration during • 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.

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

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

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

Questions?