Digitalized two parametric system for gamma/neutron
spectrometry

D 2014

Digitalized two parametric system for gamma/neutron spectrometry

VEŠKRNA, Martin; Zdeněk MATĚJ; Filip MRAVEC; Václav PŘENOSIL; František CVACHOVEC et al.

Základní údaje

Originální název

Digitalized two parametric system for gamma/neutron spectrometry

Název česky

Digitalizovaný dvouparametrický systém pro gamma/neutron spektrometrii

Autoři

VEŠKRNA, Martin; Zdeněk MATĚJ ; Filip MRAVEC; Václav PŘENOSIL; František CVACHOVEC a Michal KOŠŤÁL

Vydání

Knoxville, USA, 18th Topical Meeting of the Radiation Protection and Shielding Division (RPSD 2014), od s. 1-4, 4 s. 2014

Nakladatel

American Nuclear Society

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

20206 Computer hardware and architecture

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Forma vydání

elektronická verze "online"

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14330/14:00073299

Organizační jednotka

Fakulta informatiky

ISBN

978-0-89448-714-9

Klíčová slova česky

gama/neutronová spektrometrie, diskriminace; PSD; spektrometrie; dvouparametrický spektrometr; neutronová spektrometrie

Klíčová slova anglicky

gamma/neutron spectrometry; discrimination; spectrometry; PSD; two-parameter spectrometer; neutron spectrometry

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 16. 4. 2015 09:31, prof. Ing. Václav Přenosil, CSc.

Anotace

ORIG CZ

V originále

Many types of detectors like stilbene, NE-213 etc. in conjunction with photomultiplier loaded with low working resistance produce pulses of approximately 100 ns length and contain information about deposited particle in the trailing edge. Using fast analog to digital converters (ADC) and field-programmable gate array (FPGA) it is possible to create a spectrometric system working in mixed gamma and neutron fields which is not loaded dead time. The count rate of processed pulses can reach more than one million per second. Such a high count rate of processed pulses can be achieved due to the pulse processing is implemented in FPGA. The output of this pulse processing is amplitude which describes the energy of deposited particle and discrimination parameter whereby it is possible to discriminate photons and neutrons. To increase the dynamic range of energy of detectable particle the signal from photomultiplier is separated into two branches with different amplification. Each branch is digitalized by separate ADC. Components from which the system is composed are so light that the spectrometer can be easily transported. Its weight is less than 3 kilograms. Spectrometer was tested in the research reactor LR-0 in Rez near Prague (Czech Republic). The measured data was processed using deconvolution into a neutron flux density and compared with nowadays used analog spectrometer and simulation result. Measured neutron spectrum of Cf-252 is included.

Česky

Článek popisuje spektrometr pro měření ve směsných polích gama/neutrony. Analogový signál z detektoru je vzorkován AD převodníky pracujícími na frekvenci 1 GHz. Předzpracování signálu probíhá v FPGA a tím je zajištěna vysoká propustnost systému bez mrtvé doby. Spektrometr byl testován v Centru výzkumu Řež na reaktoru LR-0.

Návaznosti

TA01011383, projekt VaV

Název: Digitální spektrometrický systém jaderného záření

Přiložené soubory

RPSD2014_-_Digitalized_two_parametric_system_for_gammaneutron_spectrometry.pdf

Citovat

VEŠKRNA, Martin; Zdeněk MATĚJ; Filip MRAVEC; Václav PŘENOSIL; František CVACHOVEC a Michal KOŠŤÁL. Digitalized two parametric system for gamma/neutron spectrometry. Online. In 18th Topical Meeting of the Radiation Protection and Shielding Division (RPSD 2014). Knoxville, USA: American Nuclear Society, 2014, s. 1-4. ISBN 978-0-89448-714-9.

@inproceedings{1210637,
   author = {Veškrna, Martin and Matěj, Zdeněk and Mravec, Filip and Přenosil, Václav and Cvachovec, František and Košťál, Michal},
   address = {Knoxville, USA},
   booktitle = {18th Topical Meeting of the Radiation Protection and Shielding Division (RPSD 2014)},
   keywords = {gamma/neutron spectrometry; discrimination; spectrometry; PSD; two-parameter spectrometer; neutron spectrometry},
   howpublished = {elektronická verze "online"},
   language = {eng},
   location = {Knoxville, USA},
   isbn = {978-0-89448-714-9},
   pages = {1-4},
   publisher = {American Nuclear Society},
   title = {Digitalized two parametric system for gamma/neutron spectrometry},
   year = {2014}
}

TY  - CONF
ID  - 1210637
AU  - Veškrna, Martin - Matěj, Zdeněk - Mravec, Filip - Přenosil, Václav - Cvachovec, František - Košťál, Michal
PY  - 2014
TI  - Digitalized two parametric system for gamma/neutron spectrometry
PB  - American Nuclear Society
CY  - Knoxville, USA
SN  - 9780894487149
KW  - gamma/neutron spectrometry
KW  - discrimination
KW  - spectrometry
KW  - PSD
KW  - two-parameter spectrometer
KW  - neutron spectrometry
N2  - Many types of detectors like stilbene, NE-213 etc. in conjunction with photomultiplier loaded with low working resistance produce pulses of approximately 100 ns length and contain information about deposited particle in the trailing edge. Using fast analog to digital converters (ADC) and field-programmable gate array (FPGA) it is possible to create a spectrometric system working in mixed gamma and neutron fields which is not loaded dead time. The count rate of processed pulses can reach more than one million per second. Such a high count rate of processed pulses can be achieved due to the pulse processing is implemented in FPGA. The output of this pulse processing is amplitude which describes the energy of deposited particle and discrimination parameter whereby it is possible to discriminate photons and neutrons. To increase the dynamic range of energy of detectable particle the signal from photomultiplier is separated into two branches with different amplification. Each branch is digitalized by separate ADC. Components from which the system is composed are so light that the spectrometer can be easily transported. Its weight is less than 3 kilograms. Spectrometer was tested in the research reactor LR-0 in Rez near Prague (Czech Republic). The measured data was processed using deconvolution into a neutron flux density and compared with nowadays used analog spectrometer and simulation result. Measured neutron spectrum of Cf-252 is included.
ER  -

VEŠKRNA, Martin; Zdeněk MATĚJ; Filip MRAVEC; Václav PŘENOSIL; František CVACHOVEC a Michal KOŠŤÁL. Digitalized two parametric system for gamma/neutron spectrometry. Online. In \textit{18th Topical Meeting of the Radiation Protection and Shielding Division (RPSD 2014)}. Knoxville, USA: American Nuclear Society, 2014, s.~1-4. ISBN~978-0-89448-714-9.

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