LhARA pre-CDR Meeting 14th Jan 2020

Meeting details

15:00 Room 532, Blackett Lab.

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Agenda

• Action items from last meeting.
  • WS to send JPar snapshot of beamline.

• System updates.
  • Laser driven proton and ion source.
  • Proton and ion capture.
  • Stage 1 beam transport: Beam transport and delivery to the in vitro end station.
  • Stage 2 beam transport: Post-acceleration and beam delivery to the in vivo end station.
  • Biological end stations.
    • Version 2 of the in vitro floor plan.
  • Infrastructure and Integration.
  • Project plan for the delivery of LhARA.
  • Safety.
  • End-to-end simulation.
  • Instrumentation.
• A.O.B.

Notes

Participants: AK, WS, JPas, KL, Jpo, HTL, CW
Apologies:

• Laser
  • Input beam produced by HTL. Try to get OE to take a look and ask about progress with 3D simulations.
• Capture
  • JPo: Will get different focal points for both solenoids and Gabor lens when using a beam with an energy spread.
  • JPas: will calculate electric field matrix for Gabor lens.
  • CW: more work on electric field modelling. Looking at breakdown, current design should be resistant.
  • CW: differential pumping calculations updated now have 3 orders of magnitude pressure drop. Need to get input from the laser guys.
  • CW to circulate document.
• Beam transport
  • JPas has updated the stage 1 lattice.
  • Simulation files have been updated to include 5cm without space charge and 5cm with space charge and then run in BDSIM and GPT.
  • Rebunching cavities for stage 1:
    • 1st cavity is for phase rotation.
    • Collimator between lenses 3 and 4.
    • 2nd is for rebunching after lens 4. (to rotate and shorten bunch).
• R&D plan due in 2 weeks. AK will circulate the Initial draft.

Action items

• Discuss input beam with OE and GH.
• JPas to calculate electric field matrix for Gabor lens.
• CW to circulate document on laser capture interface.
• AK to circulate initial draft of project plan.