DocumentCode :
687293
Title :
Development of the Central Task Processing Unit for space-borne Gamma-Ray Burst polarimeter, POLAR
Author :
Rybka, Dominik ; Marcinkowski, R. ; Hajdas, Wojtek ; Britvitch, Ilia ; Traseira Rodriguez, Ismael ; Gauvin, Neal ; Produit, Nicolas ; Rapin, Divic ; Pohl, Margit ; Orsi, Silvio ; Lechanoine-Leluc, Catherine ; Paniccia, Mercedes ; Batsch, Tadeusz ; Rutczyn
Author_Institution :
Paul Scherrer Inst., Villigen, Switzerland
fYear :
2013
fDate :
Oct. 27 2013-Nov. 2 2013
Firstpage :
1
Lastpage :
5
Abstract :
POLAR, a joint European-Chinese experiment, is a novel compact space-borne Compton polarimeter conceived and optimized for detection of the prompt emission of Gamma-Ray Bursts (GRB) and precise measurements of polarization in the hard X-ray energy range 50-500 keV. The complete instrument consists of two parts: internal one, placed inside spacelab and the detector itself, placed outside spacelab, called respectively IBOX and OBOX. The OBOX constitutes of 25 frontend electronic modules (FEE), high voltage and low voltage power supplies and the Central Task Processing Unit. The main functions of Central Task Processing Unit system are defined as follows: communication and transfer of data to IBOX, communication with all frontends, analysis of trigger signals and generation of global trigger signals, data acquisition, synchronizing of all frontends and control of power supplies. The functional requirements are fulfilled by three individual FPGA chips named respectively to their functions: Concentrator, Trigger and CPU. This article presents description of the Central Task Processing Unit hardware design and brief introduction to main components of the firmware developed for this device. Ongoing integration activities of the device with the complete POLAR instrument proved that all basic functions are working correctly. The qualification model of the instrument has been constructed and currently undergoes verification and validation tests in view of planned flight onboard the Chinese spacelab TG-2 scheduled for 2015.
Keywords :
data acquisition; data communication; field programmable gate arrays; firmware; gamma-ray apparatus; gamma-ray bursts; gamma-ray detection; high energy physics instrumentation computing; nuclear electronics; polarimeters; synchronisation; trigger circuits; CPU; FPGA chips; IBOX; OBOX; POLAR; X-ray energy; central task processing unit hardware design; compact spaceborne Compton polarimeter; concentrator; data acquisition; data communication; data transfer; electron volt energy 50 keV to 500 keV; firmware; frontend electronic module; functional requirements; global trigger signal generation; planned flight onboard; polarization measurement precision; power supplies control; spaceborne gamma-ray burst polarimeter; synchronization; Central Processing Unit; Detectors; Field programmable gate arrays; Instruments; Low voltage; Power supplies; Process control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2013 IEEE
Conference_Location :
Seoul
Print_ISBN :
978-1-4799-0533-1
Type :
conf
DOI :
10.1109/NSSMIC.2013.6829742
Filename :
6829742
Link To Document :
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