2010/05/18 by Ilan Sagiv, Asad M. Aboobaker, Sagiv, Ilan +109
Engineering · Physics and Astronomy · #Advanced Thermodynamic Systems and Engines #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Radio Astronomy Observations and Technology #Superconducting and THz Device Technology #astro-ph.CO #astro-ph.IM
paper · pdf · doi:10.48550/arxiv.1005.3339
11 pages, 6 figures, Proceedings of the 12th Marcel Grossman Conference
arxiv created 2010/05/18 · openalex publication_date 2010/05/18 · arxiv updated 2010/05/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We describe the cryostat and supporting electronics for the EBEX experiment. EBEX is a balloon-borne polarimeter designed to measure the B-mode polarization of the cosmic microwave background radiation. The instrument includes a 1.5 meter Gregorian-type telescope and 1432 bolometric transition edge sensor detectors operating at 0.3 K. Electronics for monitoring temperatures and controlling cryostat refrigerators is read out over CANbus. A timing system ensures the data from all subsystems is accurately synchronized. EBEX completed an engineering test flight in June 2009 during which the cryogenics and supporting electronics performed according to predictions. The temperatures of the cryostat were stable, and an analysis of a subset of the data finds no scan synchronous signal in the cryostat temperatures. Preparations are underway for an Antarctic flight.