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An Investigation of the Cooling Properties of a Sapphire Half-Wave Plate for SPIDER


Crites, Abigail Tinney (2006) An Investigation of the Cooling Properties of a Sapphire Half-Wave Plate for SPIDER. Senior thesis (Major), California Institute of Technology. doi:10.7907/kpqr-kr27.


Specific cryogenic data about the thermal and optical properties of sapphire are required to properly implement the sapphire half-wave plate that will be used to modulate the polarization signal in the next generation of CMB polarimeters. The wave plate must be operated from a base temperature of between 4 and 20 K. Simulations and experiments in a cryostat will determine if the sapphire sample can be radiatively cooled to approximately 20 K when operating from a 4.2K base temperature. These data will be used to design the final wave plate mount and determine how it will be operated.

Item Type:Thesis (Senior thesis (Major))
Subject Keywords:Physics
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Withheld
Research Advisor(s):
  • Lange, Andrew E.
Thesis Committee:
  • None, None
Defense Date:1 May 2006
Record Number:CaltechTHESIS:02122018-174544961
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10699
Deposited By: Joy Painter
Deposited On:13 Feb 2018 17:26
Last Modified:20 May 2020 19:22

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