EBEX: the E and B Experiment

Grainger, William F.; Aboobaker, Asad M.; Ade, Peter A. R.; Aubin, F.; Baccigalupi, C.; Bissonnette, Eric; Borrill, J.; Dobbs, M.; Hanany, Shaul; Hogen-Chin, Clayton; Hubmayr, Johannes; Jaffe, A. H.; Johnson, Bradley R.; Jones, T. J.; Klein, Jeff; Korotkov, Andrei; Leach, S.; Lee, Adrian V.; Levinson, L. J.; Limon, M.; Macaluso, John; MacDermid, Kevin; Matsumura, Tomotake; Meng, Xiaofan; Miller, Amber; Milligan, Michael; Pascale, Enzo; Polsgrove, Dan; Ponthieu, N.; Reichborn-Kjennerud, Britt; Renbarger, T.; Sagiv, Ilan; Stivoli, F.; Stompor, R.; Tran, Hung V.; Tucker, G. S.; Vinokurov, J.; Zaldarriaga, Matías; Zilic, Kyle

doi:10.1117/12.789627

Cited by 17 publications

(17 citation statements)

References 12 publications

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“…4 These mm-wavelength telescopes are optimized for observing the Cosmic Microwave Background radiation. To reduce these systems' size and power requirements, Field-Programmable Gate Arrays (FPGAs) are replacing mixed-signal designs that perform signal-processing and control algorithms.…”

Section: Introductionmentioning

confidence: 99%

Detection and repair of radiation induced single event upsets in an FPGA-based readout for TES bolometer arrays

et al. 2010

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Frequency multiplexed readout systems for large TES bolometer arrays are in use for ground and balloonbased mm-wavelength telescopes. New digital backend electronics for these systems implement advanced signal processing algorithms on FPGAs. Future satellite instruments will likely use similar technology. We address the challenges of operating FPGAs in an orbital radiation environment using neighbour-neighbour monitoring, where each FPGA monitors its neighbour and can correct errors due to radiation events. This approach reduces the FPGA's susceptibility to crippling events without relying on triple redundancy or radiation-hardened parts, which raise the system cost, power budget, and complexity. This approach also permits earlier adoption of the latest FPGAs, since radiation-hardened variants typically lag the state of the art.

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Section: Introductionmentioning

confidence: 99%

Detection and repair of radiation induced single event upsets in an FPGA-based readout for TES bolometer arrays

et al. 2010

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“…Large arrays of Transition Edge Sensor (TES) bolometers have recently seen widespread application to dark matter detection experiments and astronomical telescopes in the millimeter, sub-millimeter, far-infrared, soft x-ray, and gammaray bands (see, for example, [1], [2], [3], [4], [5], [6], [7], [8]). This is due to their exquisite sensitivity for incoherent detection, ease for fabrication of large monolithic arrays using photolithographic techniques, and relative insensitivity to microphonics due to their low impedance.…”

Section: Introductionmentioning

confidence: 99%

“…Each module uses a single series array Superconducting Quantum Interference Device (SQUID) [12] operating at 4 • K as a transimpedance pre-amplifier. This readout system is being used for several mm-wavelength telescopes including the EBEX Balloon-borne polarimeter [3] and POLARBEAR experiment [13].…”

Section: Introductionmentioning

confidence: 99%

A Biasing and Demodulation System for Kilopixel TES Bolometer Arrays

Smecher

Aubin

Bissonnette

et al. 2012

IEEE Trans. Instrum. Meas.

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We describe the signal-processing logic, firmware, and software for a frequency-domain multiplexed (FDM) biasing and demodulation system that reads out Transition Edge Sensor (TES) bolometer arrays for mm-wavelength cosmology telescopes. This system replaces a mixed-signal readout backend with a much smaller, more power-efficient system relying on Field-Programmable Gate Arrays (FPGAs) for control, computation and signal processing. The new system is sufficiently robust, automated, and power efficient to be flown on stratospheric balloon-borne telescopes and is being further developed for satellite applications.

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“…Previous EBEX related publications describe the experiment's science goals [7], design [8] and detectors and readout [9]. Here we will focus on the cryostat and its housekeeping readout.…”

Section: Introductionmentioning

confidence: 99%

The Ebex Cryostat and Supporting Electronics

Sagiv

2012

The Twelfth Marcel Grossmann Meeting

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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.

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EBEX: the E and B Experiment

Cited by 17 publications

References 12 publications

Detection and repair of radiation induced single event upsets in an FPGA-based readout for TES bolometer arrays

Detection and repair of radiation induced single event upsets in an FPGA-based readout for TES bolometer arrays

A Biasing and Demodulation System for Kilopixel TES Bolometer Arrays

The Ebex Cryostat and Supporting Electronics

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