| | 20 | JB, AK, KL, LC |
| | 21 | |
| | 22 | 1. Notes and actions from [wiki:Research/Instrumentation/Meetings/2019/06-26 last meeting]: |
| | 23 | * **AK:** Complete order for clear fibre. |
| | 24 | * **In hand:** Purchase order raised. Saint Gobain has acknowledged receipt. Order is expected in 6 weeks. |
| | 25 | * **LC:** Re-issue drawings 'for the record' when ready. |
| | 26 | * **Done.** |
| | 27 | * **HTL:** With KL, review simulation of doublet layers potted in Araldite. |
| | 28 | * **Done.** KL discussed with HTL. Small differences in simulation were acceptable. **Adopt** potting in black epoxy as baseline. |
| | 29 | * **HTL:** With KL, review estimate of light yield from simulation. |
| | 30 | * **Done.** HTL had revised light-yield calculation and discussed with KL. Now seems OK for present. |
| | 31 | * **HTL:** Inject 90Sr electrons to estimate test-rig light yeild. |
| | 32 | * **In progress.** HTL has simulation that gives light yield and has found 90Sr spectrum. Work in progress. |
| | 33 | * **KL:** Liaise to develop concept for polishing and light-exclusion from light guides. |
| | 34 | * **Done** for light exclusion; LC has a concept that is discussed below. |
| | 35 | * **Stands**: Polishing specification. AK mentioend that Saint Gobain specification may include spec on polishing. Need to make a decision on strategy. |
| | 36 | * **LC**: Re-evaluate use of PTFE based on discussion with R12. |
| | 37 | * **Done.** See below. |
| | 38 | * **KL**: Work within Imperial to find assembly space. |
| | 39 | * **On going.** Could be 527. |
| | 40 | * **KL**: Seek meeting with S.Gruber to get her input into the design. |
| | 41 | * **Stands.** |
| | 42 | |
| | 43 | 2. Design update: LC \\ |
| | 44 | * [raw-attachment:2019-07-09-LC.pdf Status report 02Jul19] |
| | 45 | * Images: \\ |
| | 46 | [[Image(image001.png, 120px)]] [[Image(image002.png, 120px)]] [[Image(image005.jpg, 120px)]] [[Image(image006.jpg, 120px)]] |
| | 47 | |
| | 48 | * Points made in LC update were discussed. We noted: \\ |
| | 49 | * That the chemical composition of the black dye (and the epoxy) was required. LC will discuss with S.Camfer of the Resin Lab at RAL. |
| | 50 | * Need a mechanical design for the potting of the fibres emerging from the optical connector and for the connector that mates with the camera. LC agreed to look at these. |
| | 51 | * There may be a requirement for a tensioner, particularly if we move to production of a large number of detectors. |
| | 52 | |
| | 53 | 3. Update on progress of preparations for manufacture: LC & discussion \\ |
| | 54 | * 6 quotes had been obtained for manufacture of aluminium parts. The cheepest was £1069 (+ VAT?). **LC** will check with JT to understand whether the company is acceptable. If it is, we **agreed** to place the order. |
| | 55 | * **KL** will email FW to work out how best to place the order. |
| | 56 | * We noted that winding most probably would take place at Imperial. |
| | 57 | |
| | 58 | 4. Simulation update: HTL \\ |
| | 59 | * No update as HTL on shift at MedAustron. |
| | 60 | |
| | 61 | 5. Optical readout update: JB \\ |
| | 62 | * [raw-attachment:2019-07-03-JB.pdf Status report 03Jul19] |
| | 63 | * We agreed to go with 'option 1', the commercial unit. **JB** will move to order of parts. **AK** will send relevant project code to JB. |
| | 64 | |
| | 65 | 6. Next steps \\ |
| | 66 | Move to procurement of components so that we can begin to work towards manufacture of first prototype. |
| | 67 | |
| | 68 | 7. DONM \\ |
| | 69 | * 24Jul19; |
| | 70 | |
| | 71 | 8. AoB \\ |
| | 72 | We **agreed** to treat the presentation to SG as a mini review of the project so far. |
| | 73 | |
| | 74 | === Summary of actions: === |
| | 75 | * **HTL**: Inject 90Sr electrons to estimate test-rig light yeild. |
| | 76 | * **KL**: Liaise to develop concept for polishing. |
| | 77 | * **KL**: Work within Imperial to find assembly space. |
| | 78 | * **KL**: Seek meeting with S.Gruber to get her input into the design. |
| | 79 | * **LC**: Obtain chemical composition of resin and black dye. |
| | 80 | * **LC**: Develop concept for optical connector at camera end of lightguide and for potting of light guide at detector end. |
| | 81 | * **KL**: Liaise with FW to work out how to place aluminium-part order. |
| | 82 | * **JB**: Purchase parts for optical readout system. |
| | 83 | * **AK**: Provide JB with project code for purchase of optical readout components. |
| | 84 | |
| | 85 | |
| | 86 | ---- |
| | 87 | |
| | 88 | == Agenda: == |
| | 89 | |
