Changes between Version 3 and Version 4 of Research/Instrumentation/Meetings/2019/06-11


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Timestamp:
Jun 13, 2019, 8:07:28 PM (5 years ago)
Author:
longkr
Comment:

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

    v3 v4  
    1616Full list of telephone contacts may be found [https://ccap.hep.ph.ic.ac.uk/trac/raw-attachment/wiki/Communication/Z0-Phone-details.pdf here].
    1717
    18 == Notes: ==
    19 
    20 **Present:** JB, KL, AK, HT, LC
     18== Agenda: ==
    2119
    22201. Notes and actions from [wiki:Research/Instrumentation/Meetings/2019/06-05 last meeting]:
     
    3129
    32303. Simulation update: HTL \\
     31 * [raw-attachment:image001.jpg Winding jig.]
    3332
    34334. Optical readout considerations: JB \\
     
    3938
    40397. AoB
    41  
     40
     41== Notes: ==
     42
     43**Present:** JB, KL, AK, HT, LC
     44
     451. Notes and actions from [wiki:Research/Instrumentation/Meetings/2019/06-05 last meeting]:
     46* **AK** agreed to find minimum bending radius;
     47 * Stands: Not yet established.  AL will ask Saint Gobain when placing order for clear fibre. 
     48* **LC** will consider options for stopping the unravelling during manufacture.
     49 * 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.
     50* **AK,KL** place an order for clear fibre
     51 * Stands.  AK agreed to place the order.
     52* **HT** check use of (e.g.) 50 micron aluminium in simulation
     53 * Agenda item.
     54* **JB** supply printed circuit board spec
     55 * Done.  Specifications sent to LC.
     56
     572. Design update: LC \\
     58 * [raw-attachment:image001.jpg Winding jig.]
     59  * Agreed to adopt 25mm minimum bending radius.  Implies that specs of winding jig needs to be revised.
     60 * 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.
     61 * 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.
     62 * 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.
     63
     643. Simulation update: HTL \\
     65 * [raw-attachment:HTL_FilmMaterialComparison.pdf​ Slides.]
     66 * **//Agreed//** **HT** would do simulation with fibres potted in Araldite.
     67 * JB asks for estimate of photons per second and photons per spill to help him specify readout.  **HT** will try and estimate from simulation. 
     68 * HT's estiamte of particle rate:
     69  * Proton rate 10^9; Carbon 10^8 in a 5s spill.  **HT** will find out the rep rate.
     70 * 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**).
     71
     724. Optical readout considerations: JB \\
     73 * 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.
     74
     755. Next steps
     76 * Goal is to carry out the actions agreed above and be ready to make initial winding trials in one month.
     77
     786. DONM
     79 * 25Jun19: 11:00
     80
     817. AoB
     82 * HTL: Simulation generates energy deposition rather thann light yeild.  We agreed to use MICE prescription to move from energy to light.
     83
     84**Actions:**
     85* **AK:** Establish minimum bending radius.
     86* **AK:** Place an order for clear fibre.
     87* **LC:** Produce drawings for quote.
     88* **HT:** Simulate doublet layers potted in Araldite.
     89* **HT:** Try and estimate light yield from simulation. 
     90* **HT:** Find MedAustron rep rate.
     91* **HT:** Inject 90Sr electrons to estimate test-rig light yeild.