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ANU Workshop on Beam Instrumentation for HIAF Development Projects

ANU hosted a workshop in March 2015 focusing on beam instrumentation for the Heavy Ion Accelerator Facility (HIAF), discussing various development projects including upgrades to computer control systems, vacuum pumps, magnet power supplies, beam transport tuning, and beam focusing. The projects aimed to enhance beam diagnostic capabilities, stabilize terminal potential, improve AMS and RIB capabilities, upgrade beam lines, and develop beam pulsing technologies. Challenges such as equipment failures and misalignments were addressed with innovative solutions to advance the efficiency and stability of the accelerator.

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ANU Workshop on Beam Instrumentation for HIAF Development Projects

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  1. IBIC Collaboration Workshop March 2015 Beam Instrumentation for HIAF at ANU Nikolai Lobanov on behalf of HIAF Technical TEAM

  2. 22 tonnes of SF6

  3. 14UD and Linac capabilities

  4. 14UD development projects  New accelerator computer control and data acquisition systems  Replacement vacuum pumps and gauges  Replacement major magnet power supplies by modern systems. Integration with new computer control  Automated tuning of the beam transport. Compensation of daily ion source displacement on wish list  Fully equipping with BPMs and FCs allowing optimal beam focusing

  5. Automated tuning of the beam transport

  6. 14UD development projects  New accelerator computer control and data acquisition systems  Replacement vacuum pumps and gauges  Replacement major magnet power supplies by modern systems. Integration with new computer control  Automated tuning of the beam transport. Compensation off daily ion source displacement  Fully equipping with FCs and BPMs allowing optimal beam focusing Tech Team

  7. New FCs and BPMs There is need for better beam diagnostic particularly reliable Faraday Cups Issues: bellow failure in FC18 (ORNL)

  8. Terminal FC Actuator assembly now acting on the opposite side of the swing cup lever to default “OUT” position, TO#118 Nov 2012 Muirhead, Linardakis

  9. 14UD development projects continued  New Terminal Potential Stabilisation system TPS 6.0 (NEC) including GVM, Slits and CPO amplifiers and corona probe controller  New NEC remote operated 4 jaw double HE slit and two 2 jaw single HE slit. Slit controllers are made in-house  Purchasing SF6gas to allow optimum tank pressure. Upgrade SF6monitoring system. New fast SF6 containment valves  Enhancement AMS capability  Enhancement RIB capability

  10. New High Energy remotely operated slits All slits with 24 VDC motor drives, Ta elements Controllers are build in-house HE object slits and support frame installed during TO#117 Aug 2012 Thomas Tunningley, Alan Cooper and Tech Team

  11. 14UD development projects continued  New Terminal Potential Stabilisation system TPS 6.0 (NEC) including GVM, Slits and CPO amplifiers and corona probe controller  New NEC remote operated 4 jaw double HE slit and two 2 jaw single HE slit. Slit controllers are made in-house  Purchasing SF6gas to allow optimum tank pressure. Upgrade SF6monitoring system. New fast SF6 containment valves  Enhancement AMS capability  Enhancement RIB capability

  12. AMS enhancement: LE 36Cl measurement: 35Cl, 36Cl and 37Cl transport through 14UD is required by cycling in less than a second Fast mass switching system for McS deck Weisser, Tsifakis, Fifield 13

  13. AMS enhancement New 90 degrees magnet box installed during TO#121 Feb 2014 Cooper, Bockwinkel, Heighway, Tunningley, Gudu 14

  14. 14UD development projects continued  New Terminal Potential Stabilisation system TPS 6.0 (NEC) including GVM, Slits and CPO amplifiers and corona probe controller  New NEC remote operated 4 x jaw HE slits and two 2 x jaw image HE slits. Slit controllers are made in-house  Purchasing SF6gas to allow optimum tank pressure. Upgrade SF6monitoring system. New fast SF6 containment valves  Enhancement AMS capability  Enhancement RIB capability  Upgrade existing beam lines

  15. Gas cathode SNICS upgrade Artwork by Thomas Tunningley

  16. Gas cathode and isotopes: misalignment challenge 50 Cr unused 50 Cr 2 mm 52 Cr 4 mm 52 Cr 2 mm Flakes caused shortage after running 2 weeks at 6-7 kV 50 Ti 2 mm+ Ammonia Q: does source turbo help? CaH2exposed to ambient

  17. Beam pulsing development projects Goal: increase efficiency of operation and the phase stability  Improve the performance of the RT resonators and phase detector Peter Linardakis talk, Crook  Custom re-design of the complete rf electronics capable of phase and amplitude locking for 3-frequency buncher and choppers Peter Linardakis talk, Daniel Tempra  Upgrade slow chopper electronics  Develop 150 MHz room temperature superbuncher with the aim of improving time resolution from ~1 ns to ~ 0.1 ns

  18. The pulser upgrade Artwork by Thomas Tunningley

  19. Beam pulsing development projects  Improve the performance of the RT resonators and phase detector  Custom re-design of the complete rf electronics capable of phase and amplitude locking for 3-frequency buncher and choppers  Upgrade slow chopper electronics  Develop 150 MHz room temperature superbuncher with the aim of improving time resolution from ~1 ns to ~ 0.1 ns Weisser

  20. Upgrade slow chopper electronics  Old system: concern about its life expectancy and duty factor limited to 25%  Purchase of state-of –the art fast-switching power supply from FID GmbH  Pulse amplitude 0 to 400 V; pulse/pause width 100 ns to ∞  Repetition rate 0 to 5 MHz; rise/fall < 20 ns;  duty factor 50% Slow chopper test of 26thFeb 2010 100 ns per div; Specs have been met Commissioned in 2012

  21. Beam pulsing development projects  Improve the performance of the RT resonators and phase detector  Custom re-design of the complete rf electronics capable of phase and amplitude locking for 3-frequency buncher and choppers  Upgrade slow chopper electronics  Develop 150 MHz room temperature superbuncher with the aim of improving time resolution from ~1 ns to ~ 0.1 ns Linardakis talk

  22. The end of accelerator at MPI-K

  23. Operation modes of bunching system (a) bunching (b) de-bunching (c) bunch rotation

  24. Low Energy Bias Bias control is being installed in the low energy entrance of 14UD in order to reduce beam losses and the need for installing shorting rods David Weisser and Tech team TO#117 2012

  25. Low Energy Bias BEAM FOCUS FEEDTHROUGH ASSEMBLY-INSIDE TANK, FITTED DURING TO#117A Silicon grease fills the air gap between the nylon and steel tank lid to raise the “permittivity”. Resistor upper spark gap electrode. Outer protective can provides end of resistor spark gaps. 25kOhm resistor suspended on Nylon feed through/insulator. Resistor spark gap electrode. ACC silicon grease. ¼” tubular connects to Unit 1 Tube 1, 5thtube gap

  26. ANU superconducting LINAC

  27. Beam time structure measurement LiF2 detector, fast FC. High sensitivity BPM Peter Linardakis

  28. Thank you and enjoy the rest of ATF! HIAF invaded by The Flash in August 2013. They took photos for the scavenger hunt. Most stuck for the full tour around facility.

  29. HIAF Endowment Fund launched on 7thMay 2014

  30. Acknowledgement HIAF Technical TEAM: Howard Wallace, Allan Harding Alan Cooper, David Weisser part-time John Bochwinkel, Gareth Crook, Caleb Gudu, Justin Heighay, Lorenzo Larioza, Peter Linardakis, Alistair Muirhead, Dimitrios Tsifakis, Thomas Tunningley

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