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ALICE RF System Andy Moss & Alan Wheelhouse, ASTeC, Daresbury Laboratory

ALICE RF System Andy Moss & Alan Wheelhouse, ASTeC, Daresbury Laboratory. RF System. Main Menu RF Operation Switching on the IOTs RF Control Monitoring Systems IOTs Linac & Booster Cavities Buncher Cavity Pressure Monitoring. Main Menu. RF Drop Down Menu RF Buncher RF Booster 1

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ALICE RF System Andy Moss & Alan Wheelhouse, ASTeC, Daresbury Laboratory

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  1. ALICE RF SystemAndy Moss & Alan Wheelhouse,ASTeC, Daresbury Laboratory ALICE RF System Andy Moss/Alan Wheelhouse

  2. RF System • Main Menu • RF Operation • Switching on the IOTs • RF Control • Monitoring Systems • IOTs • Linac & Booster Cavities • Buncher Cavity • Pressure Monitoring ALICE RF System Andy Moss/Alan Wheelhouse

  3. Main Menu RF Drop Down Menu • RF Buncher • RF Booster 1 • RF Booster 2 • RF Linac 1 • RF Linac 2 • RF PSU • Linac Module • Booster Module • RF Buncher • Adhoc RF Gain • Tuner Motor Test ALICE RF System Andy Moss/Alan Wheelhouse

  4. RF Operation ALICE RF System Andy Moss/Alan Wheelhouse

  5. RF PSU Control • Analogue Monitoring • Control Area • IOT Monitoring Main Menu → RF → RF PSU ALICE RF System Andy Moss/Alan Wheelhouse

  6. Switching On The IOTs • Press (Hold down) • Aux ON • SB ON • Filaments need 10 minutes • Check ion current is <1µA • HV ON • HV will slowly rise to 27kV, ~600mA • Check ion current is <1µA • Allow 10 minutes for the quiescent currents to stabilise • Switch RF ON ALICE RF System Andy Moss/Alan Wheelhouse

  7. RF On • Trace seen on oscilloscope • RF raised on each IOT to provide the required gradient for each of the Linac and Booster cavities • Check ion current is <1µA • Ditto for the solid state amplifier on the Buncher cavity ALICE RF System Andy Moss/Alan Wheelhouse

  8. RF Control – Linac & Booster Cavities Main Menu → RF → RF Linac 1 • RF power adjusted using the gradient • RF phase adjustment (station phase) • All other controls are fixed ALICE RF System Andy Moss/Alan Wheelhouse

  9. RF Control – Buncher Cavity Main Menu → RF → RF Buncher • RF power adjusted using the gradient • RF phase (station phase) • All other controls are fixed ALICE RF System Andy Moss/Alan Wheelhouse

  10. Operation • Quench • RF should switch off • If not immediately switch off rf press HV ON • Trips • Re-apply • Constant trips seek assistance • IOT arc detector trips need to be reset at the PLC • An additional screen will be added in the future ALICE RF System Andy Moss/Alan Wheelhouse

  11. Monitoring Systems ALICE RF System Andy Moss/Alan Wheelhouse

  12. IOT Readings • All IOT limits are set within the PLC • Power measurements • Drive • Output • Additional voltage readings Main Menu → RF → RF PSU → LC IOT5 ALICE RF System Andy Moss/Alan Wheelhouse

  13. Booster & Linac Readings • Power Measurements • Waveguide power • Cavity probe power Main Menu → RF → RF PSU → Linac ALICE RF System Andy Moss/Alan Wheelhouse

  14. Buncher Readings Main Menu → RF → RF PSU → Buncher ALICE RF System Andy Moss/Alan Wheelhouse

  15. Calibration Readings • Calibration readings for all the power measurements • DO NOT TOUCH Main Menu → RF → Adhoc RF Gain ALICE RF System Andy Moss/Alan Wheelhouse

  16. SC Module Monitoring • Monitoring for Booster and Linac Cavities • Cavity power and gradient • Waveguide powers • Cavity pressure • Cold & warm window temperatures Main Menu → RF → Linac Module ALICE RF System Andy Moss/Alan Wheelhouse

  17. Machine Vacuum Monitoring Main Menu → Machine → Vacuum ALICE RF System Andy Moss/Alan Wheelhouse

  18. Injector Vacuum Monitoring Main Menu → Injector → Vacuum ALICE RF System Andy Moss/Alan Wheelhouse

  19. Monitoring Main Menu → General → Monitoring • Radiation monitoring • Pressure monitoring ALICE RF System Andy Moss/Alan Wheelhouse

  20. Monitoring - Graphs Main Menu → Injector → Injector Vacuum → Log Pressure 1hr ALICE RF System Andy Moss/Alan Wheelhouse

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