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Linac 4 Instrumentation Needs K.Hanke & M.Pasini

Linac 4 Instrumentation Needs K.Hanke & M.Pasini. Overview of Instrumentation Needs. 3MeV front-end. 95keV. 3MeV. 40MeV. 90MeV. 160MeV. H-. RFQ. CHOPPER. DTL. CCDTL. SCL. rf volume source (DESY) 35 kV extrac. 60kV postacc. chopper 352 MHz 3.6 m 11 em quad 3 rf cavity.

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Linac 4 Instrumentation Needs K.Hanke & M.Pasini

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  1. Linac 4 Instrumentation Needs K.Hanke & M.Pasini

  2. Overview of Instrumentation Needs 3MeV front-end 95keV 3MeV 40MeV 90MeV 160MeV H- RFQ CHOPPER DTL CCDTL SCL • rf volume source • (DESY) • 35 kV extrac. • 60kV postacc. chopper 352 MHz 3.6 m 11 em quad 3 rf cavity • Drift Tube Linac • 352 MHz • 13.4 m • 3 tanks • 5 klystrons • 4 MW • 82 PMQuad • Cell-Coupled Drift Tube • Linac • 352 MHz • 25.3 m • 24 tanks • 8 klystrons • 6.5 MW • 24 EMQuads • Side Coupled • Linac • 704 MHz • 28 m • 20 tanks • 4 klystrons • 12 MW • 20 EMQuads • RFQ (IPHI) • 352 MHz • 6 m • 1 Klystron • 1 MW Linac 4 TDR CERN-AB-2006-084 ABP/RF

  3. Commissioning and Operation • commissioning phase: • moveable bench for different stages of the DTL • Faraday Cup, SEM grid, transverse and lonitudinal • emittance diagnostics, 2 pick-ups (tof) • - for DTL tank-by-tank commissioning • - SNS experience with “D-Plate” • IPHI diagnostic line for the 3 MeV front-end • wire scanners, spectrometer, pick-ups, transformers, • time-of-flight • → see presentation P.Ausset

  4. Source & LEBT • emittance scanner • spectrometer • fixed Faraday cup • transformer diagnostics box (Faraday cup, SEM)

  5. Source & LEBT

  6. Chopper Line 2 slow wire scanners BSHM 2 transformers

  7. Chopper Line

  8. BSHM: Requirements ~103 ions ~108 ions 2.84 ns • 1st objective: • measure residual H- in (not completely) chopped bunches • with a sensitivity of ~ 1000 ions, in the vicinity of full bunches (~108 ions). • detector must be turned on/off within 1 ns, dynamic range 1:106 • 2nd objective: • transverse imaging, halo diagnostics • beam core: ~108 H-/bunch/cm2 • beam halo: ~103 H-/bunch/cm2 • active area of detector 4 × 4 cm • dynamic range: 1:106

  9. 3 MeV Test Place IPHI diagnostic line 3 MeV test place in the PS South Hall including source, LEBT, RFQ, chopper line and IPHI diagnostic line

  10. DTL SEM grid beam current transformer BLM beam loss monitor position, intensity and phase pick-up BLM BLM DTL tank1 DTL tank2 DTL tank3

  11. DTL

  12. CCDTL SEM grid beam current transformer BLM beam loss monitor position, intensity and phase pick-up CCDTL module2 CCDTL module1 BLM BLM CCDTL module3 CCDTL module4

  13. CCDTL SEM grid beam current transformer BLM beam loss monitor position, intensity and phase pick-up CCDTL module6 CCDTL module5 BLM BLM CCDTL module7 CCDTL module8

  14. CCDTL

  15. SCL SEM grid ceam current transformer BLM beam loss monitor position, intensity and phase pick-up SCL module2 SCL module1 BLM SCL module4 SCL module3 BLM

  16. SCL

  17. Transfer Line and PSB Injection • transfer line: • pick-ups, BLMs, profile monitors as in the linac • transfer line design pending • emittance diagnostics at the exit of the linac and • before PSB injection • Booster injection period: • profile/position measurement to adjust the beam • on the stripper foils

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