SmartPhantom meeting: Wednesday 5^th June 2019, 16:00

Meeting details

Teleconference

Phone details:

UK: 08082 380274
Austria: 0800 006612 

PIN: 5904750902

Full list of telephone contacts may be found here.

Agenda:

1. Notes and actions from last meeting:

• AK agreed to find minimum bending radius;
• LC will consider options for stopping the unravelling during manufacture.
• AK,KL place an order for clear fibre
• HT check use of (e.g.) 50 micron aluminium in simulation
• JB supply printed circuit board spec

2. Design update: LC
   
   • Winding jig.

3. Simulation update: HTL
   
   • Winding jig.

4. Optical readout considerations: JB
   

5. Next steps

6. DONM

7. AoB

Notes:

Present: JB, KL, AK, HT, LC

1. Notes and actions from last meeting:

• AK agreed to find minimum bending radius;
  • Stands: Not yet established. AL will ask Saint Gobain when placing order for clear fibre.
• LC will consider options for stopping the unravelling during manufacture.
  • LC took advice from J.Tarrant. Hard to implement a clamp. Idea to try double-sided tape to lock fibre down. LC also consulted Inspection Lab staff. They have a concept to print the bushes. They will inspect what is made.
• AK,KL place an order for clear fibre
  • Stands. AK agreed to place the order.
• HT check use of (e.g.) 50 micron aluminium in simulation
  • Agenda item.
• JB supply printed circuit board spec
  • Done. Specifications sent to LC.

2. Design update: LC
   
   • Winding jig.
     • Agreed to adopt 25mm minimum bending radius. Implies that specs of winding jig needs to be revised.
   • We agreed to move to building prototype winding gear. LC will produce drawings so that we can go out for quote. Imperial w/s and R12 to be considered in quoting process.
   • LC consulted Resin Lab. Recommendation to heat Araldite 2011 to 40-degrees. Equivalently, could use Araldite 2014 -- similar properties, but grey. Resin Lab can mix black Araldite.
   • Discussion of material for frame and potting scheme. Some preference for carbon fibre and black epoxy floated on the doublet layer to support and to exclude light.

3. Simulation update: HTL
   
   • Slides.
   • Agreed HT would do simulation with fibres potted in Araldite.
   • JB asks for estimate of photons per second and photons per spill to help him specify readout. HT will try and estimate from simulation.
   • HT's estiamte of particle rate:
     • Proton rate 10^{9; Carbon 10}8 in a 5s spill. HT will find out the rep rate.
   • JB: corrolary: what is the light yield of the source that we'll used to characterise the planes. Need to inject representative electron beam in simlation (HT).

4. Optical readout considerations: JB
   
   • JB will propose an optical readout scheme when an estimate of light o/p has been made. We agreed that readout specification would be made within a month.

5. Next steps
   • Goal is to carry out the actions agreed above and be ready to make initial winding trials in one month.

6. DONM
   • 25Jun19: 11:00

7. AoB
   • HTL: Simulation generates energy deposition rather thann light yeild. We agreed to use MICE prescription to move from energy to light.

Actions:

• AK: Establish minimum bending radius.
• AK: Place an order for clear fibre.
• LC: Produce drawings for quote.
• HT: Simulate doublet layers potted in Araldite.
• HT: Try and estimate light yield from simulation.
• HT: Find MedAustron rep rate.
• HT: Inject 90Sr electrons to estimate test-rig light yeild.