ePIC pfRICH General meeting

US/Eastern


Summary
The meeting covered updates on a new nylon mesh and silicon sealant for the HRPPD window, with options to be sent to BNL, and discussed findings from thermal testing of mirrors, leading to proposed adjustments in testing protocols. Concerns about epoxy bonding properties were raised, prompting further investigation into alternative materials, while the significance of transition temperature and its impact on material deformation was emphasized. Additionally, lab space for the pfRICH vessel and TDR progress updates were provided, highlighting the need for ongoing dialogue regarding data rates and project deadlines.

Key Points
- Sushrut introduced the meeting and discussed updates on a new nylon mesh and silicon sealant, mentioning that multiple options would be sent to BNL. 0:00
- Preet provides detailed findings from the thermal testing of mirrors, discussing reflectivity measurements and suggesting adjustments to future testing protocols based on initial observations. 4:53
- Sushrut addresses concerns about the bonding properties of the epoxy used with different substrates, agreeing to investigate further and consider alternative materials if necessary. 13:08
- Sushrut explains the significance of glass transition temperature concerning the deformation of materials, emphasizing the need for further testing on how materials behave at different temperatures over time. 18:17
- Preet summarizes the discussion, proposing to focus on identifying failure points and temperature ranges where deformation occurs, highlighting the importance of understanding the transition from solid to gel states. 23:55
- Brian introduces the topic of lab space for storage and assembly of the pfRICH vessel before and after the beam test. 26:36
- Brian updates TDR progress, mentioning the executive summary and the need for dialogue with Jeff Langraf regarding data rates and fees. 46:56
- Brian summarizes the current status of the project, highlighting populated sections and the upcoming deadline for the executive summary. 55:12

Next Steps
- Sushrut to finalize the slide and upload it to the Indica slides. 5:14
- Preet to thermal cycle the convex curved sample with a decent co-bond for testing. 12:07
- Brian to start thinking about how to fabricate and assemble the Aerogel wall for the prototype and establish a rough timeline for when that work should commence. 33:37
- Alexander to review the Prototype Engineering Document (PED) draft submitted by Bill and provide feedback or approval. 44:26

 

There are minutes attached to this event. Show them.
    • 12:00 12:20
      Stony Brook Vessel and Mirror PED Work Update 20m
      Speakers: Alex Eslinger (employee@jlab.org;member@jlab.org), Charles-Joseph Naïm (Stony Brook University (CFNS)), Preet Mann (Stony Brook), Wenliang Li (Stony Brook University CFNS), Zhoudunming Tu (BNL)
    • 12:20 12:40
      Purdue Vessel and Mirror PED Work Update 20m
      Speakers: Alex Eslinger (employee@jlab.org;member@jlab.org), Andreas Werner Jung (member@cern.ch), Sushrut Karmarkar (Purdue University (USA))
    • 12:40 13:00
      Assembly / storage space at BNL, prototype construction sequence, etc 20m
      Speaker: Brian Page (Brookhaven National Laboratory)
    • 13:00 13:10
      Initial Mirror Thermal Test 10m
      Speakers: Brian Page (Brookhaven National Laboratory), Preet Mann (Stony Brook)
    • 13:10 13:20
      TDR Update 10m
      Speaker: Brian Page (Brookhaven National Laboratory)