Changes between Initial Version and Version 1 of Research/Instrumentation/Meetings/2019/06-11


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Timestamp:
Jun 11, 2019, 9:56:12 AM (5 years ago)
Author:
longkr
Comment:

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  • Research/Instrumentation/Meetings/2019/06-11

    v1 v1  
     1= SmartPhantom meeting: Wednesday 5^th^ June 2019, 16:00 =
     2
     3== Meeting details ==
     4
     5Teleconference
     6
     7Phone details:
     8{{{
     9UK: 08082 380274
     10Austria: 0800 006612
     11
     12PIN: 5904750902
     13
     14}}}
     15
     16Full list of telephone contacts may be found [raw-attachment:Z0-Phone-details.pdf here].
     17
     18== Notes: ==
     19
     20**Present:** JB, KL, AK, HT, LC
     21
     221. 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.
     411. 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**).
     463. **Agreed** to meet next week:
     47  * 11:00 Tuesday 11Jun19
     48