Standardized CCD and MCT detector mounting configurations

1
Standardized CCD and MCT detector mounting
configurations

• B. C. Bigelow, UM Physics
• 2/2/05

2
Common detector packages

• Objectives
• Build on previous UM focal plane work (see BSCW
  or http//www.physics.lsa.umich.edu/bigelow/snap/i
  ndex.html)
• Standardize visible and IR detector package
  details including
• Package to focal plane mechanical interface 3
  point contact
• Electrical connectors
• Filter mounts
• Accommodate detector package CTE differences
• Enable multiple material choices for focal plane
  base plate
• Follow the HDH focal plane specifications
• Acknowledgements
• Heritage from GL Scientific H2RG package
  Thanks Gerry Luppino!

3
This presentation

• Outline
• Why Hypertronics connectors?
• Standardized visible package
• Standardized IR package

4
Electrical connectors

• Hypertronics Corp. is a division of Smiths Group
  (UK)
• US offices in Hudson, MA, and St. Louis (custom
  designs)
• Multiple space-rated connector options
• KA series - 2/3 row style, 0.6mm pins (4A),
  2.54mm staggered pitch
• KA series - 4/5 row style, 0.6mm pins (4A),
  2.54mm square pitch
• HPH series multi rows, 0.6mm pins (4A), 1.905mm
  staggered pitch
• Multiple material choices
• KA series Diallyl Phthalate standard
• HPH series Polyphenylene Sulphide
• PEEK is a common option (oil field connectors)
• Various glass-filled PEEK options are available
• Testing required for 140K operation?
• Custom connectors are regular part of
  Hypertronics business

5
Hypertronics connectors
HPH series connectors for military/aerospace
markets
6
Hypertronics connectors
HPH series, 0.6mm pins, 1.905mm pitch
7
Hypertronics connectors
KA series connectors for test equipment markets
HPH and KA series both use Hypertac sockets
8
Hypertronics connectors
KA series, 0.6mm pins, 2.54mm pitch
9
Standardized CCD packages

• Familiar silicon / AlN / Invar sandwich
• Hypertronics custom HPH series connector
• GL Scientific H2RG package features
• Height adjustment via precision spacers
• Precision diameter locating studs
• Belleville disc springs for preload to focal
  plane
• Athermal PCB interface to CCD, connector
• Familiar Invar filter frame, aperture mask, and
  mount
• Detector package and local electronics concept
  shown

10
Standardized CCD packages
11
Standardized CCD packages
HPH 62 pin custom connector
KA 62 pin custom connector
12
Standardized CCD packages
13
Standardized CCD packages
14
Standardized CCD packages
CCD package with local electronics (cric etc.)
15
Standardized MCT packages

• Familiar Moly package
• Hypertronics custom HPH connector
• GL Scientific H2RG features
• Height adjustment via precision spacers
• Precision diameter locating studs
• Belleville disc springs for preload to focal
  plane
• Athermal PCB interface to CCD, connector
• Familiar Moly filter frame, aperture mask, and
  mount
• Detector package and local electronics concept
  shown

16
Standardized MCT packages
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Standardized MCT packages
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Standardized MCT packages
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Standardized MCT packages
20
Standardized MCT packages
MCT package with local electronics (SIDECAR etc.)
21
Common detector packages

• Conclusions
• Standardized visible and IR detector package
  designs shown
• Mountings enable alternate material choices for
  focal plane base plate
• Designs follow HDH focal plane specs (mostly!)
• Belleville disc spring preloading enables
  baseplate material choices
• Intermixing of CCD and MCT detectors remains an
  open issue
• What is minimum allowable gap between packages?
• Does detector readout direction influence
  orientation in focal plane?