ESM BMM Source Front End Overview for IRR

ESM & BMM Source & Front End Overview for IRR Gregory Fries, NSLS-II Accelerator Division Project Engineer ESM & BMM Source & Front End IRR June 1, 2017 1 BROOKHAVEN SCIENCE

Outline • • • Scope Machine Status & Operating Schedule Source Specs, Layouts, Installation & Readiness Insertion Device (ID) Safety Features Front End (FE) Details Differences in Bending Magnet (BM) Front Ends Front End Layouts, Installation & Readiness Radiation Safety Source & FE Commissioning Plan Conclusion 2 BROOKHAVEN SCIENCE

Scope • ESM (21 -ID) Insertion Device & Straight Section • Addition of second EPU to operating ESM beamline • • Following were included in June ‘ 16 IRR • One 1. 4 m EPU 57, one EPU vacuum chamber & RF BPMs BMM (6 -BM) Source • One 3 -pole wiggler (3 PW) ESM Front End • • • One 2. 8 m EPU 105 Insertion device (ID) front end (FE) was included in June ‘ 16 IRR No change; FE to be reviewed for compliance with 2 nd device only BMM Front End • Bending magnet (BM) front end 3 BROOKHAVEN SCIENCE

Machine Status & Shutdown Schedule • Installation, testing & commissioning dependent upon • • • operating schedule NSLS-Il beamline operations in process Three machine shutdowns per year (4 -5 weeks each) • • • Dec/Jan April/May Aug/Sept Typically a two-day maintenance period every third week & a studies period every week during operations Minor installation & testing during maintenance days Installation completed during April/May ‘ 17 shutdown Commissioning scheduled for June ‘ 17 4 BROOKHAVEN SCIENCE

Operating Schedule Shifts for ESM & BMM Commissioning 5 BROOKHAVEN SCIENCE

Source Specifications Comparison Beam Line XPD Project Type Beampor Length Design t [m] NSLS-II DW 100 Hybrid High-βx 6. 8 (2× 3. 4) Period [mm] 100 Peak Field [T] 1. 8 Mag Gap [mm] Kmax ~16. 5 15. 0 FE Aper 1. 1 x 0. 15 64. 5 1. 2 (heli) 0. 57 (heli) 3. 55 (heli) ESM NEXT EPU 57 PPM High-βx 1. 4 49 0. 90 (vlin) 3. 06(vlin) 16. 0 0. 83 (Lin) 4. 4 (Lin) Total Power [k. W] 0. 7 x 0. 7 0. 86 (vlin) 2. 0 (Lin) XFP Partner 3 PW PMW Near 2 nd 0. 25 dipole - 1. 14 28 3. 0 x 0. 4 0. 32 CMS Partner 3 PW PMW Near 2 nd 0. 25 dipole - 1. 14 28 3. 0 x 0. 4 0. 32 0. 74 (heli) 7. 23 (heli) ESM • BMM • NEXT EPU 105 PPM High-βx 2. 8 105 0. 90 (vlin) 7. 23 (vlin) 16. 0 1. 14 (Lin) 11. 2 (Lin) 4. 22 (heli) 0. 7 x 0. 7 4. 22 (vlin) 10. 1 (Lin) ESM EPU 105 similar to EPU 57; much less power than damping Near 2 Partner 3 PW PMW 0. 25 1. 14 28 3. 0 x 0. 4 0. 32 wigglers dipole BMM 3 PW is identical to the ones at XFP & CMS nd 6 BROOKHAVEN SCIENCE

ESM ID Straight Layout at 21 -ID Be a m RF BPMs EPU 57 (in operation) EPU 105 Courtesy of B. Kosciuk 7 BROOKHAVEN SCIENCE

BMM 3 PW Layout at 6 -BM Dipole Magnet 3 PW Assembly Bea m Courtesy of J. Rank 8 BROOKHAVEN SCIENCE

3 PW Development • • • ADC manufactured a prototype in 2012 as part of NSLS-II project Prototype was measured at BNL by ID group Installation was removed from NSLS-II scope Design changes & optimizations were made Final design review occurred in March ‘ 15 Batch of six 3 PWs built in-house ADC Machined components made at central shop. Prototype Magnets procured & then characterized at BNL Final assembly & magnetic measurement at BNL XFP & CMS 3 PWs installed in May ’ 16 & successfully commissioned in July/Aug ‘ 16 BMM 3 PW installed in Dec ‘ 16 9 BROOKHAVEN SCIENCE

ID/Accelerator Components Installation • Dec. ‘ 15 Shutdown • • • Installed EPU vac. chamber & RF BPMs for EPU 57 IRR in June ‘ 16 Dec. ‘ 16 Shutdown • • • Installed EPU & 3 PW into SR tunnel Installed rack electronics Pulled & terminated cables Final surveyed EPU straight & 3 PW Locked out EPU & 3 PW until IRR approval April/May ‘ 17 Shutdown • • Testing controls In-situ Locked out EPU & 3 PW until IRR approval Note that EPU is locked at full open gap and 3 PW is locked fully retracted 10 BROOKHAVEN SCIENCE

ESM EPU Straight & BMM 3 PW ACTIONS Specifications defined. Design complete. Design reviews completed and all actions resolved. Devices under configuration management. Magnetic fields measured. Mechanical travel tested. Water flow measured. EPS tested. Travelers developed and approved. Travelers completed. • N/A Note that there is no cooling water to EPU or 3 PW 11 BROOKHAVEN SCIENCE

Safety Features of NSLS-II Insertion Devices • Various safety features have been implemented for all IDs: • Brakes in motors – Brakes are on when there is no power • Self-locking gears – Gap will not close by attractive force only (EPU) • Pilot lamp during gap/phase motion (EPU) – Warns people in the vicinity of the device that it is in motion • Lexan cover for magnetic gaps and external pinch points (EPU) – Covers from both inner and outer side of a device. • LOTO procedures during maintenance – Written procedure for each type of the device for lock-out 12 BROOKHAVEN SCIENCE

EPS Switch For EPU • • A mechanical switch on the EPU independent from control system for “gap open” status has integrated into EPS 3 PW is not tied-in to EPS • Low power device doesn’t have the potential to damage equipment 13 BROOKHAVEN SCIENCE

Front End Details • • A front end delivers the photon beam to the beamline while controlling the sizes of both the synchrotron and bremsstrahlung radiation fans. The fixed mask shadows the vacuum chambers of downstream collimators and safety shutters for beam deviations controlled by active interlock. Lead collimators trim the Bremsstrahlung fan exiting to beamlines. Photon shutter is used to stop the photon beam in order to protect the uncooled safety shutters. The safety shutters block the bremsstrahlung radiation from exiting through the ratchet wall collimator chamber opening. The photon shutter & safety shutters are locked out. (Centrally controlled LOTO) ESM is same design as NSLS-II Project, ABBIX, & other NEXT front ends 14 BMM is same design as XFP & CMS, which does contain BROOKHAVEN SCIENCE

Major Differences in BM front ends • • • Mirror located in front end (beamline component; not all BM FEs) Additional gate valves to isolate mirror Additional fixed masks to shadow collimators Additional shadow shield for line of sight Slits contain current measuring devices (same x-y stage) Larger aperture Beryllium window isolates SR & BL vacuum (not all BM FEs) Fixed masks, slits, & photon shutter are Cu-Cr-Zr instead of Glidcop New safety shutter design Different diagnostic flag (beamline component; not all 15 BROOKHAVEN SCIENCE

ESM Front End Layout Ratchet Wall Collimator Safety Shutters Slow Gate Valve BM Photon Shutter Collimator 1 Fixed Mask X-Y Slits Bea m X-ray Flag Photon Shutter Collimator 2 Fast Gate Valve Courtesy of C. Amundsen 16 BROOKHAVEN SCIENCE

BMM Front End Layout BM Photon Shutter Mirro r Slow Gate Valve Ratchet Wall Collimator Safety Shutters Gate Valve Bea m Be Window Fixed Mask 1 X-Y Slits Collimator 1 Fixed Masks 2 & 3 Collimator 2 Fixed Mask 4 Photon Shutter Courtesy of M. Breitfeller 17 BROOKHAVEN SCIENCE

Radiation Safety & Top-Off • • Radiation safety components: • • • Fixed masks (all) Burn through #1 & #2 (ESM only) Collimator #1 & #2 shielding Side shadow shield (BMM only) Safety shutter #1 & #2 shielding Ratchet wall collimator shielding Top-Off components: • • • Exit absorber Fixed mask #1 Collimator #2 (ESM only) Credited controls include all shielding & PPS components Removal or modification of any device under 18 configuration control requires an approved PS safety BROOKHAVEN SCIENCE

BMM Front End Installation • Dec ‘ 16 Shutdown • • Installed ratchet wall collimator, safety shutters & exit pipe Installed front end stand assemblies & mirror Pulled & terminated cables Plumbed DI water & compressed air Tied-in front ends into EPS & PPS Tested subassemblies In-situ Locked out shutters until IRR approval April/May ‘ 17 Shutdown • • Installed Beryllium window Baked & final surveyed front end Final controls testing Locked out shutters until IRR approval 19 BROOKHAVEN SCIENCE

ESM (21 -ID) & BMM (6 -BM) Front Ends ACTIONS Ray tracings complete. Design drawings complete. Vacuum system complete. Final survey complete. Devices under configuration management. Integrated testing complete. Water flow measured. Travelers complete. Top-off analysis complete. EPS verification. PPS verification. ESM BMM No change to ESM front end since original IRR 20 BROOKHAVEN SCIENCE

Commissioning Plan • • • Commissioning scheduled for June ‘ 17 for ESM & BMM Commissioning studies time has been reserved Commissioning effort will include staff from Operations, Physics, Insertion Device, Front End, and Diag. groups Software controls & tools already developed and verified during NSLS-II beamline commissioning Procedures released for ID & FE commissioning sequence and radiation survey plan ESM FE commissioning complete ESM EPU 105 similar design to ESM EPU 57 BMM FE similar design to XFP & CMS 21 BMM 3 PW identical to XFP & CMS BROOKHAVEN SCIENCE

Insertion Device Commissioning • • Beam current below 2 m. A Verify orbit and characterize/correct lattice Reduce ID gap (EPU) Generate orbit correction feed-forward (lookup) table Inject with ID gap closed, improve injection efficiency (EPU) General radiation survey Authorization proceed to FE commissioning Note that 3 PW has no gap to close; above process takes place with 3 PW inserted 22 BROOKHAVEN SCIENCE

Front End Commissioning • • Verify active interlock functionality Align ID BPMs with respect to nearby regular BPMs (EPU) Center beam in the ID (EPU) BMM will start with the mirror out Align the photon beam through the FE by scanning the SR fan at 2 m. A BMM will use slit signals to observe beam Condition vacuum Radiation survey (fault study) 23 BROOKHAVEN SCIENCE

Beam Current Increase Plan • • • Obtain authorization to increase current to 85 m. A Close all ID gaps and lock out FE shutters Evaluate and record current machine state Gradually increase current Verify active interlock system being engaged Monitor and verify orbit, tunes, lattice, vacuum, temperature Hold Point – Radiation survey • • Phase 1 (slits open) Phase 2 (slits closed) BMM Phase 2 a (mirror out); Phase 2 b (mirror in, slits open) Phase 3 (fault studies) Beam conditioning Repeat to allowable current 24 BROOKHAVEN SCIENCE

Conclusion • • • ESM EPU, BMM 3 PW and BMM front end installed & tested ESM front end already fully commissioned & verified for compliance with second EPU Radiation components under configuration control Assembly drawings, ray tracings, procedures, & travelers are available BMM shutters are locked in the down position EPU & 3 PW are locked out until commissioning starts ESM EPU, BMM 3 PW and BMM front end are ready for commissioning No self-identified pre-starts Commissioning experience & prepared commissioning procedures from NSLS-II Project, ABBIX, & NEXT 25 BROOKHAVEN SCIENCE