Summary
The meeting covered updates on attaching the 8020 on the form for the vessel construction and the laser monitoring system, with collaboration from various team members. There was a detailed discussion on the estimated costs of components and the importance of testing splitters and diffusers for the timing resolution of the monitoring system. Additionally, considerations were discussed around achieving precision below 100 picoseconds and distributing light more evenly across detectors.
Key Points
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Update on Attaching the 8020:
- Charles provided a detailed update on the progress of attaching the 8020 on the form and the next steps in the process (0:41).
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Laser Monitoring System:
- Bill introduced the topic of the laser monitoring system and mentioned collaboration involving Fernando, Bob, Craig, and Alexander (17:02).
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Discussion on Rectangular Pattern:
- Alex inquired about the rectangular pattern and its relevance to the HRPPD active area, leading to a discussion on diffusers, uniformity, and application comparisons (23:12).
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Cost Estimates:
- Bill detailed the estimated costs of various components for the system, highlighting expenses for the Plas laser, splitters, feedthroughs, and diffusers (37:38).
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Testing Components:
- Bill stressed the importance of testing components like splitters and diffusers to understand their impact on timing resolution, recommending the purchase of a complete set of equipment for prototype testing (40:28).
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Timing Resolution:
- The meeting attendees discussed acceptable timing resolution, considering achieving precision below 100 picoseconds and the practicality of aiming for sub-picosecond resolutions (45:18).
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Measuring Delays and Responses:
- Craig emphasized the importance of measuring delays and responses with multi-photon and single-photon signals, highlighting the need for a good start signal (52:11).
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Distributing Light Across Detectors:
- Craig suggested arranging fibers to illuminate multiple HRPPDs instead of a single one, aiming to distribute light more evenly across detectors (58:18).
Next Steps
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Metrology Report:
- Alex to have an undergraduate student (under Sushrut's instruction) compile a metrology report for the rings by next Monday and provide a comparison upon arrival at Stony Brook (8:45).
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Protocol and Process Report:
- Alex to include the protocol and process in the report, send it for review, and discuss any comments before proceeding with operations (9:22).
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Equipment Purchase for Prototype Testing:
- Alexander to purchase at least a complete set of equipment for the prototype to understand timing offsets and monitor system health, ensuring data processing is completed before particle detection (49:15).
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Start Signal Quality:
- Craig to ensure the start signal quality for measuring timing offsets and single-photon responses, aiming for tens of picoseconds accuracy (52:27).
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Gas System Integration Meeting:
- Alex to schedule a dedicated time slot at 01:00 p.m. on Monday for a meeting to discuss the mechanical side of how to integrate the gas system (1:07:15).
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