| 22 | | 1. Outline of design: LC \\ |
| 23 | | Present design for gluing jig was described (see [raw-attachment:190529-SmartPhantom.pdf slides]). |
| 24 | | * Questions raised: |
| 25 | | * What resin should be used? We discussed trade-off between viscosity and fibre spacing. Need to take advice from Resin Lab. |
| 26 | | * How to will a doublet layer be wound? Concept is that former is used to wind one layer of fibres. Fibres themselves for the support for the second layer. |
| 27 | | * What is the minimum bending radius of the fibre and does the lobe |
| 28 | | match the minium bend radius for the fibre? We discussed the issue |
| 29 | | of micro-cracks, which may degrade optical performance, and the possibility |
| 30 | | of fibre breaking. We agreed that we would need to address the fibre-breaking issue |
| 31 | | to avoid a lot of wasted time and material during manufacture. |
| 32 | | * **AK** agreed to find minimum bending radius; |
| 33 | | * **LC** will consider options for stopping the unravelling during manufacture. |
| 34 | | * We discussed how to move forward and **//agreed//** to move to prototype manufacture when: |
| 35 | | * LC had a chance to think about a means of mitigating issues arising from fibre breaks; |
| 36 | | * Input had been received from the Resin Lab about the various gluing issues; |
| 37 | | * Samples of printed circuit board (**JB** to supply spec) and carbon-fibre sheet have been sourced; |
| 38 | | * Further we **agreed**: |
| 39 | | * To place an order for clear fibre (**KKL, AK**) |
| 40 | | * To consider optical readout next time. |
| 41 | | 1. Slide from HT:\\ |
| 42 | | HT presented outline results of his simulation (see [raw-attachment:p207_simulation_stack_nomylar_V.png slide]). Initial conclusions: |
| 43 | | * Mylar OK if thickness is less than 300 microns per sheet |
| 44 | | * We also agreed to consider aluminium or black (anodised) aluminium |
| 45 | | * The use of (e.g.) 50 micron aluminium will be checked in simulation (**HT**). |
| 46 | | 3. **Agreed** to meet next week: |
| 47 | | * 11:00 Tuesday 11Jun19 |
| | 22 | 1. Notes and actions from [wiki:Research/Instrumentation/Meetings/2019/06-05 last meeting]: |
| | 23 | * **AK** agreed to find minimum bending radius; |
| | 24 | * **LC** will consider options for stopping the unravelling during manufacture. |
| | 25 | * **AK,KL** place an order for clear fibre |
| | 26 | * **HT** check use of (e.g.) 50 micron aluminium in simulation |
| | 27 | * **JB** supply printed circuit board spec |
| | 28 | |
| | 29 | 2. Simulation update: HTL \\ |
| | 30 | |
| | 31 | 3. Optical readout considerations: JB \\ |
| | 32 | |
| | 33 | 4. Next steps |
| | 34 | |
| | 35 | 5. DONM |
| | 36 | |
| | 37 | 6. AoB |
