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The Polarized Gamma-Ray Observer, PoGOLite
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2010 (English)In: Transactions of the Japanese Society for Artificial Intelligence, Aerospace Technology Japan, Vol. 8Article in journal (Refereed) Published
Abstract [en]

The Polarized Gamma-ray Observer, PoGOLite, is a balloon experiment with the capability of detecting 10% polarization from a 200 mCrab celestial object in the energy-range 25–80 keV. During a beam test at KEK-PF in 2008, 19 detector units and one anti-coincidence detector were assembled, and a 50 keV X-ray beam with a polarization degree of ∼90% was irradiated at the center unit. Signals from all 20 units were fed into flight-version electronics consisting of six circuit boards (four waveform digitizer boards, one digital I/O board and one router board) and one microprocessor (SpaceCube), which communicate using a SpaceWire interface. One digitizer board, which can associate up to 8 detectors, outputs a trigger signal. The digital I/O board handles the trigger and returns a data acquisition request if there is no veto signal (upper or pulse-shape discriminators) from any detector unit. This data acquisition system worked well, and the modulation factor was successfully measured to be ∼34%. These results confirmed the capabilities of the data-acquisition system for a “pathfinder” flight planned in 2010.

Place, publisher, year, edition, pages
2010. Vol. 8
Keyword [en]
Balloon Experiment, Polarization Measurement, Hard X-Ray, Soft Gamma-Ray, SpaceWire Interface
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-80149OAI: oai:DiVA.org:kth-80149DiVA: diva2:496178
Note

QC 20120424

Available from: 2012-02-09 Created: 2012-02-09 Last updated: 2016-12-22Bibliographically approved

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Kiss, Mózsi BankPearce, MarkRyde, FelixAxelsson, Magnus

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