Recent work at Cincinnati
This presentation is the property of its rightful owner.
Sponsored Links
1 / 5

Recent work at Cincinnati PowerPoint PPT Presentation


  • 59 Views
  • Uploaded on
  • Presentation posted in: General

Recent work at Cincinnati . A. Schwartz, A. Drutskoy, M. Belhorn Belle-II PID Meeting, KEK 8 May 2009. Summary: have received prototype mirror from OSI have investigated/tested some epoxies/adhesives have attached OSI mirror to Babar quartz bar

Download Presentation

Recent work at Cincinnati

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Recent work at cincinnati

Recent work at Cincinnati

A. Schwartz, A. Drutskoy, M. Belhorn

Belle-II PID Meeting, KEK

8 May 2009

  • Summary:

  • have received prototype mirror from OSI

  • have investigated/tested some epoxies/adhesives

  • have attached OSI mirror to Babar quartz bar

  • have reviewed stand-off wedge with OSI. They are now putting together preliminary pricing and delivery schedule for 16 wedges and 16 40-cm-wide mirrors; will take ~two weeks.

  • OSI has begun work on a prototype wedge; will take 4 weeks.


Mirror fabrication

Mirror fabrication

  • Optical Solutions Incorporated (OSI) (New Hampshire, USA)

  • Specializes in high quality optics, custom work, prototyping

  • recommended by Zygo

  • Designed optics for Subaru Telescope

Fabricated small spherical mirror:

Challenging optic, as center of curvature is off-axis.

(Mathematica study indicated off-axis improved single photon resolution for ~vertical tracks.)


Optical epoxies adhesives

Optical epoxies/adhesives

  • Two main types: single-component UV-cured, and two-component self-curing

  • UV-cured adhesives: large vendor is Norland.

    • NOA 61: popular in optics industry, used by OSI, very runny, index=1.56

    • NOA 63: better UV transmission than 61, more viscous, index=1.56

    • NOA84: even more viscous, index=1.46 (good), but worse transmission than 61/63

  • Two-component: largest vendor is Epoxy Technologies

    • EPOTEK 301-2: used by Babar, mechanically strong, index=1.6, found to yellow with age


Epoxy ing mirror to bar

Epoxy-ing mirror to bar

Tried NOA61, 63, 84; we then chose 63 (easiest to work with)

Mirror

optic

UV lamp

Bar


Remove air bubbles from epoxy cure

Remove air bubbles from epoxy, cure:

  • NOA-63 pre-cured in ~1 minute, fully-cured in few hours

  • Bond is very strong

  • Final alignment was tricky – production jigging needs some thought

  • Very different procedure from what Babar did (they epoxied horizontally using slow-cure 2-component epoxy, centrifuged to remove bubbles).


  • Login