= SmartPhantom meeting: Wednesday 11^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 [https://ccap.hep.ph.ic.ac.uk/trac/raw-attachment/wiki/Communication/Z0-Phone-details.pdf here].

== Agenda: ==

1. Notes and actions from [wiki:Research/Instrumentation/Meetings/2019/06-05 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 \\
 * [raw-attachment:image001.jpg Winding jig.]

3. Simulation update: HTL \\
 * [raw-attachment:image001.jpg 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 [wiki:Research/Instrumentation/Meetings/2019/06-05 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 \\
 * [raw-attachment:image001.jpg 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 \\
 * [raw-attachment:HTL_FilmMaterialComparison.pdf​ 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.