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Experimental zone access, beamline controls and software

This technical design review discusses the experimental zone access and beamline controls for the HIE-ISOLDE project, including two experimental stations, radiation sources, shielding, interlocks, and software tools.

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Experimental zone access, beamline controls and software

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  1. Experimental zone access, beamline controls and software HIE-ISOLDE Beam Transfer Lines Technical Design Review D.Voulot HIE-ISOLDE Beam Transfer Lines Technical Design Review

  2. Experimental zone access • Two experimental stations (phase 1) • Miniball (Exp. Station 1, 90 deg line) • Helical Spectrometer (Exp. Station 2, 45 deg line) • Try to keep current philosophy • Free access to experimental area • RP monitoring -> alarm in CCC • Counting room outside Bdg. 170 • Avoid unnecessary occupation in experimental area HIE-ISOLDE Beam Transfer Lines Technical Design Review

  3. Stage 1 HIE-ISOLDE Beam Transfer Lines Technical Design Review

  4. Stage 2a HIE-ISOLDE Beam Transfer Lines Technical Design Review

  5. Stage2b HIE-ISOLDE Beam Transfer Lines Technical Design Review

  6. Sources of radiation • X-rays from linac cavities • Prompt neutron radiation (high energy beams) • Radioactivity of beam -> situation is not affected by linac upgrade • Activation -> not significant at this beam intensities HIE-ISOLDE Beam Transfer Lines Technical Design Review

  7. X-rays from linac cavities • Linac shielding • Recommendations to be provided by RP • Baseline 40-80 cm concrete + lead panels for end walls • 4 or 5 access doors with RF interlock system • Outside shielding radiation should be compatible with permanent occupation work places (<3 μSv/h) • RP monitoring -> alarm in CCC • Need to ensure low background for experiments • Current X-ray background level has been measured with Miniball • Need data from SC cavities (SM18) HIE-ISOLDE Beam Transfer Lines Technical Design Review

  8. Prompt radiation 3 2 1 Case 3: not normal operation, may be used during commissioning and MD (maximum once a year) under RP’s control. • Radioactive beams • 17 MeV/u (A/q 2.5) • Few pps to ~1 ppA • Stable pilot beam • Ne5+ • 11.3 MeV/u • ~20 ppA • High intensity stable beam (gas injection) • He+ • 11.3 MeV/u • ~ 1 pnA HIE-ISOLDE Beam Transfer Lines Technical Design Review

  9. Beamline controls (stage 1) • Power converters • MQ: 42 • MD: 4 • Steerers: 15 • Beam diagnostics • DB: 15 • Vacuum (+ cryogenics) independent control system (PVSS) Standard control architecture HIE-ISOLDE Beam Transfer Lines Technical Design Review

  10. Field regulator Bending magnets operated in field regulation mode to avoid hysteresis effects and slow B-field drift Use pilot beams and scaling for weak RIB Existing solution based on Hall probes + software regulation on FEC FGC3 controllers: same functionality with logic directly at controller level Hall probe on all HEBT dipoles HIE-ISOLDE Beam Transfer Lines Technical Design Review

  11. Interlocks and personal protection • Magnet protection -> R. Mompo • RP monitoring • Independent system • Alarms in CCC • Interlocks for linac • Vacuum • RF • Linac access • Cryogenics HIE-ISOLDE Beam Transfer Lines Technical Design Review

  12. Software: existing REX tools HIE-ISOLDE Beam Transfer Lines Technical Design Review

  13. HIE-ISOLDE Beam Transfer Lines Technical Design Review

  14. REX NC-linac beam diagnostics HIE-ISOLDE Beam Transfer Lines Technical Design Review

  15. New applications New BI application for slit-scanner (BE/BI + BE/OP) Setting generator/convertor + beam optics SW to visualise and generate settings (BE/OP) Automatic cavity phasing application using Si-det (linac) (BE/BI + BE/OP) HIE-ISOLDE Beam Transfer Lines Technical Design Review

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