Low Energy RHIC eCooler DC gun beam test

Low Energy RHIC e-Cooler DC gun beam test planning Dmitry Kayran Nov-17, 2016

• • Schedule Status updates Activity just before tunnel closed. and Group reports.

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Schedule (updated Nov 17) √DC Gun conditioning at Cornell finished (V>420 KV) 10/10/16 √DC Gun Moved, Baked at final location BNL 10/18/16 -11/14/16 Getting ready to conditioning. √DC Gun Conditioning/Beam test exeption recieved 11/04/16 √ASSRC walkthrough Complete: 11/15/16 • Access control test 11/16/16? ? • ASSRC check off list Complete: 11/21/16? 24/25 • RSC check off list Complete: 11/21/16? 5/14 • DC Gun HV Conditioning Start @IP 2 11/08/16=> 11/21/2016? ? • DC Gun Conditioning Complete 12/1/16 +2 weeks • Laser system installation Complete 12/1/16 • Laser tests complete 12/31/16 • DC Gun Test Beam Line Installation Complete: 1/1/17 • ASSRC, RSC Walk through/ check-off list Complete: 1/15/17 • Equipment Pre-beam tests (dry runs) Complete: 1/20/17 • Tunnel closed 1/23/17 • Gun beam test start 1/23/17 • Gun beam test end 7/1/17

Exemption status Collider-Accelerator Department (C-AD) Low Energy RHIC Electron Cooling (LERe. C) USI: Gun Assembly Conditioning and Beam Test Presented for BNL ESH Committee meeting Sep. 29, 2016 Exemption is approved on Nov 4, 2016

ASSRC walk through report Action item

Going backwards • Tunnel closed Cathode installed (procedure in place!) Jan, 23 2017 – Cathode fabricated (transferred to garage #1. , garage #1 moved to IP 2, load lock baked, cathode inserted) – Dummy puck removed (garage#2 attached to , load lock baked) • Gun HV conditioning completed (operation procedure!) – All controls and gun diagnostics signals available/logging from MCR • • • MPS, Timing system, Control system dry run (odes need ) Laser/Laser transport aligned tested, controls and measurements signal available from MCR (operation procedure!) All beam diagnostic installed, cables connected, signals are available from MCR. Current status is later. All Magnets, PS, cables installed, polarity checked (check off list!!). Beam dump installed, water running. All vacuum completed, vacuum signals available in MCR

Cathode puck manipulations: steps? time? people? Experts input is needed. Cathode puck replacement (C. - J. ? ) Taking Moly-puck out (first time): Empty Garage and load lock bake 2 -3 days? Puck out, garage disconnect 1 day? Inserting new puck: Garage with new puck attached ½ day? load lock bake 2 -3 days? Puck insertion 1 -2 hours? Gun conditioning should stop before puck replacement starts. DC Gun transformation from HV conditioning to photocurrent beam operation, 2 -3 days? ? Can It be done in parallel with cathode replacement?

Cathode preparation: steps? time? people? Experts input is needed. Assumed that cathode is ready in deposition system (Triveni). Transfer cathode from deposition system to garage (first time): Empty garage attached to deposition system ½ day Garage and load lock bake 2 -3 days? Cathode out and garage disconnect 1 day? Move Garage with new puck to IP 2 1 -2 hour.

DC Gun Oct 21. Gun assembled in 912. Before it moved to IP 2 Nov 04. Gun baked Nov 17. Gun assembled and Power supply installed in IP 2 2

Gun to dump transport line status? Solenoids magnetic in measurements. Correctors in fabrication Any updates about vacuum chamber delivery?

• • • • • • • • • Beam Instrumentation readiness. (from Toby Nov. 16, 2016) Gun Profile Monitor - lecs 1 -inj. yag 1 -fc All parts expected by 12. 7 Ready to Install: 12. 12 BPM-15 mm (QTY 3) Kitted for Assembly lecs 1 -inj. b 1, lecs 1 -inj. b 2, lecs 1 -inj. b 0 Clean Room Process, assemble, leak test: 11. 21 *pending clean room availability Survey: 11. 27 Ready to Install: 11. 28 FCT - lecs 1 -inj. xf 1 Mounting Fab: 11. 16 Clean & Vacuum Fire: 11. 23 Assembly: 11. 28 Transformer due Mid December Ready to Install: aprx. 12. 20 LEPM 2 - lecs 1 -inj. yag 0 (Front End Transport, Limited Aperture) Ready for Survey and Leak check Install wedged ITO viewport 11. 28 Ready to Install: 11. 30 BPM-9 mm (QTY 4) Complete lecs 1 -inj. b 4, lecs 1 -inj. b 5, lecs 1 -inj. b 6, lecs 1 -inj. b 7 Ready to Install: 11. 16. 2016 EMS - lecs 1 -inj. slit Chamber Fab: 12. 09 Insert Parts Fab: 12. 09 Tungsten Mask Fab: 12. 21 *Pending Central Shops Outside Vendor Quote Clean & Vacuum Fire: 12. 27 Assemble: 01. 03 Survey & Leak Check: 01. 06 Ready to Install: 01. 07 • • • • • • • • • ICT - lecs 1 -inj. xf 2 RF Fab Complete: 11. 17 Clean & Vacuum Fire: 11. 23 Assemble: 11. 28 Ready to Install: 11. 30 DCCT - lecs 1 -inj. xf 3 Complete Ready to Install 11. 23 -11. 30. See ICT & supports below DCCT/ICT Support Fab Complete: 11. 16 Clean and Vacuum Fire: 11. 23 Assemble: 11. 28 Ready to Install: 11. 30 HEPM - lecs 1 -inj. yag 2 Insert Parts Fabrication: 11. 22 Clean and Vacuum Fire: 11. 29 Ferrites delivered 12. 15 Assemble: 12. 22 Survey & Leak Check: 12. 29 Ready to Install: 12. 30 LEPM 1 - lecs 1 -inj. yag 3 (Beam Dump, Full Aperture) Complete Install wedged ITO viewport Ready to Install: 11. 21 FCT - lecs 1 -inj. xf 4 Mounting Fab: 11. 16 Clean & Vacuum Fire: 11. 23 Assembly: 11. 28 Transformer due Mid December Ready to Install: aprx. 12. 20

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Beam instrumentation tests, calibration: steps? time? people? Experts input is needed. Please fill the gaps? days days days

Magnets polarity check and recorded Magnet for maximum PS current test.

MPS (Zeynep, Sergei), Timing system (Kevin, Patrick) Control system (Jim) Control system Dry Run 2 days? MPS test priory to operation (test procedure) 1 day? And during dry run? Timing system during Dry run?

Procedures OPMs, Check-off lists OPM Chapter 24 http: //www. c-ad. bnl. gov/EOPMS/OPM_PP_List_By_Chapter. aspx? Chapter=24 Procedure No. Title Revision # Status 24. 2 OPERATIONS ORGANIZATION AND ADMINISTRATION Section_Header 24. 5 LERe. C OPERATIONS Section_Header 24. 8 SUBSYSTEMS: RF AND SRF, VACUUM, WATER, LASER & CONTROLS Section_Header RF Section_Header 24. 8. 1. 1. a LERe. C DC Gun SF 6 Pressure Chamber Gas Handling: Evacuating Air or Nitrogen Gas, Filling SF 6 Gas, Suctioning SF 6 Gas and Storing SF 6 Gas 0 Active LEre. C DC Gun Pressure Chamber Pumpout Log Sheet 0 Active 24. 8. 2 VACUUM Section_Header 24. 8. 4 LASER Section_Header 24. 8. 5 CONTROLS Section_Header Things to be added: Cathode puck insertion procedure Laser operation procedure DC gun operation procedure Magnets polarity check off list MPS test procedure and check off list DC conditioning check off lists in MCR : ASSRC, RSC For beam test we will need new.

10 days cathodes turn around concept. Take out used suit case from gun at IP 2 On Friday Cathode inserted on Monday Attach to and bake load lock at deposition system Friday-Sunday Bake load lock at IP 2 Friday-Sunday Deposit (2 -3) good cathodes Monday-Friday Attached suitcase to insertion system at IP 2 On Friday • In LERe. C operation there will be 3 suitcases (fair wheels) with 12 cathodes each. – Suitcase #1 is attached to the cathode transport system (in use) – Suitcase #2 is attached to cathode deposition system (cathodes growing) – Suitcase #3 is filled with 12 cathodes in transition. One of the goal to gun test is study concept/performance of fair wheel system. Only one fair wheel capable to store and transport 12 cathodes will be available. Time to deposit one cathode is about 2 days. The optimized turn around time is 10 days. In order to optimize commissioning time there will be two more crosses (suitcases) capable to hold one or two cathodes.

Check-off lists • Prior to beam tests • • • MPS check off list Magnets configuration ( polarity) ASSRC check of list RSC check of list Subsystems readiness: (key parameters specified reached, configuration checked etc)?