= 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.
   * [https://ccap.hep.ph.ic.ac.uk/trac/raw-attachment/wiki/Research/DesignStudy/PreCDR/In%20vitro%20end%20station%20floor%20plan%20v2.docx 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.