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Guidelines for conceptual design Main design features: - TCS vs. TCSP; TCTP vs. TCSP

MECHANICAL DESIGN OF TCSP COLLIMATORS Secondary Collimators Embedding BPMs L. GENTINI, A. Dallocchio , A. Bertarelli, F. Carra, M. G arlasche. Contents. Guidelines for conceptual design Main design features: - TCS vs. TCSP; TCTP vs. TCSP - Cooling system - Embedded BPMs

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Guidelines for conceptual design Main design features: - TCS vs. TCSP; TCTP vs. TCSP

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  1. MECHANICAL DESIGNOF TCSP COLLIMATORSSecondary Collimators Embedding BPMsL. GENTINI, A. Dallocchio, A. Bertarelli, F. Carra, M. Garlasche

  2. Contents • Guidelines for conceptual design • Main design features:- TCS vs. TCSP; TCTP vs. TCSP • - Cooling system - Embedded BPMs • - RF system (ferrite + screen) • Assembly procedure:- Cooling pipes, stiffener, JAW, graphite block • - Brazing • Present status

  3. TCSP conceptual design: Guidelines • Vacuum tank (equal to TCTP collimator) • Actuation system (equal to TCTP collimator) • JAW assembly • Clamped CFC jaw (from TCS design). • Glidcop back-stiffener + Glidcop tapering embedding BPMs (from TCTP design). • Cooling system (equal to TCTP collimator): • Square pipes (9 mm CuNi). • 2 inlet on one side, 2 outlet on the other side. • 6 cooling pipes in the central cross-section. • Beam Instrumentation (equal to TCTP collimator): • 2 embedded BPMs on each JAW. • 2 temperature probes on each JAW. • RF system (ferrite tiles + screens).

  4. jaw assembly: tcsvs. tcsp • TCSP cross-section • TCS cross-section TCSP RF system : screen (St.Steel 304L) + ferrite Absorber block (AC150 2-d C/C) Jaw block (AC150 2D CFC) Contact plate (Glidcop) Plate support (Glidcop) Tensioning system: Clamps + springs + plates Tensioning system: Clamps + springs + plates Tensioning system: Clamps + springs + plates Clamping system: clamps + springs + plates TCS RF system: RF contacts (CuBe C17200) • Main differences: • Embedded BPMs • RF system

  5. jaw assembly: tctpvs. tcsp • TCSP cross-section • TCTP cross-section • RF system : screen (St.Steel 304L) + ferrite • RF system : screen (St.Steel 304L) + ferrite • Cooling system: • CuNi bent pipes • Cooling system: • CuNi bent pipes • TCSP Collimator shares with TCTPthe cooling system as well as the RF system (except few details shown in next slides).

  6. TCSP Beam instrumentation: embedded bpms • BPM section Temperature probe BPM adjustment system CFC Jaw Glidcop tapering BPM • The BPM is screwed on the tapering. • Adjustment system to align the pick-up • The area around the BPM is cooled. Probe cable support

  7. TCSP Beam instrumentation: BPM cables BPM cable support BPM cable support BPM Cable Support ~260 mm BPM BPM cable support BPM cable support • BPM are both on the exit flange side. • Two BPM cable supports are fixed on the RF screens. • Cable layout similar to TCTP collimator →minimization of stresses on cables due to jaw movements.

  8. TCSP RF system 1/4 RF contact (CuBe C17200) Slope 16.5° • (17.7°for TCTP) Jaw block (AC150 2D CFC) RF contact (CuBE C17410) Tapering (Glidcop) Slope 16° (equal to TCTP) • RF CONTACTS: • 2x RF contacts (CuBe C17200) between graphite and tapering on each JAW. • 4x RF contacts (CuBe C17410 with silver coating) between JAWs and vacuum tank.

  9. TCSP rf system 2/4 • TCSP RF SYSTEM: • Ferrite tiles + screens • Equal to TCTP collimator 30 mm Ferrite housing (copper with chrome oxide coating) Clamps(Glidcop) Positioning pin Ferrite clamp (St. Steel 304L)

  10. TCSP rf system 3/4 Ferrite tiles (equal to TCTP collimator) • GAP 0.2 mm Screen(equal to TCTP collimator)

  11. TCSP rf system 3/4 • “RF trapped” volume? • GAP 0.2mm • Question for the RF Team: • Is this small gap disturbing for the RF performances of the TCSP collimators?

  12. TCSP rf system 4/4 Tank RF contacts • (CuBe C17410 with silver coating) • JAW RF contacts • (CuBe C17410 with silver coating) • TCSP RF SYSTEM: EXTRIMITIES RF CONTACTS • Same RF contacts of phase I collimators, phase II, TCTP, etc… (CuBe C17410)

  13. Cooling system • TCS cooling pipes • TCTP/TCSP cooling pipes • INLET • OUTLET Contact areas Cooled area • OPTIMIZED TCTP/TCSP COOLING SYSTEM • Larger cooled area. • Inlet pipes serving central region. • To assure a good brazing, the under load planarity of the pipe assembly must be <0.05 mm.

  14. TCSPAssembly procedure • (Pipe 2 is fixed) • Insert pipe 1. • Put up pipe 1. • Rotate Pipe 1 in Y axle of 90°. • Move Pipe 1 in Y of around 10 mm. • Move pipe 1 in X of around 10 mm. • COOLING PIPES ASSEMBLY PROCEDURE • PIPE 1 • PIPE 2 Z Y X

  15. TCSP Assembly procedure • BACK STIFFENER ASSEMBLY PROCEDURE • Insert the back-stiffener. Z Y X

  16. TCSP Assembly procedure • JAW ASSEMBLY PROCEDURE • Brazing of back stiffener / cooling pipes / glidcop plate / tightness cups / connection sockets / probe supports. • Final machining of Glidcop plate. • Assembly the guiding plates using the machined surfaces as a reference for positioning and drilling-through. • Install springs and spring support plate using the screw M8x25 to compress the springs. • Install 2x taperings and Pick-up BPM assemblies. • Install 2x RF contacts. • Install CFC jaw bloc, the upper and bottom clamps and block them with the holding clips. • Remove the screw M8x25 on the back of the JAW.

  17. TCSP project status

  18. Thank you for your attention!

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