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Analyser for fast single events; Analyseur d'evenements rapides simples; Analizator bystrykh odnokratnykh yavlenij; Analizador de sucesos rapidos no recurrentes

Conference:

Abstract

An electronic analyser has been designed and constructed for use with single non-recurring transient signals. The signal, during passage along a coaxial line, is sampled instantaneously at a number of tap-off points, by means of a single short-duration gate pulse. Multipoint time-dissection is accomplished using a gate-duration and a time-interval between samples, which are independently adjustable from about 4 ns. The time-intervals may be programmed in non-linear array, and jitter is less than 0.5 ns. The speed of response is at present limited by diode characteristics. Each sampled voltage is stretched in a circuit which retains the voltage amplitude. A time-stretch by a factor of 10{sup 8} has been realized, with good stability. These data points may be commutated and transmitted over open-wire to low-frequency recording systems ; they may be converted to digital form for rapid data-processing, using conventional equipment; and/or they may be presented visually. The analyser is advantageous, compared with high-speed oscilloscopy, when large numbers of single-transients require individual analysis; such requirements exist for investigations into fluctuations in the response of systems, or for production-testing of components. The analyser is advantageous when the data-analysis must be accomplished quickly after the signal event occurs; it is not necessary  More>>
Authors:
Sedlmeyer, J W; Patten, R B; Fussell, L Jr [1] 
  1. Edgerton, Germeshausen And Grier, Inc., Las Vegas, NV (United States)
Publication Date:
Apr 15, 1962
Product Type:
Conference
Resource Relation:
Conference: Conference on Nuclear Electronics, Belgrade, Yugoslavia (Serbia), 15-20 May 1961; Other Information: 5 figs; Related Information: In: Nuclear Electronics III. Proceedings of the Conference on Nuclear Electronics. V. III| 544 p.
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; DATA PROCESSING; FLUCTUATIONS; NEUTRON SPECTROSCOPY; PULSE ANALYZERS; PULSED NEUTRON TECHNIQUES; PULSES; TIME-OF-FLIGHT METHOD
OSTI ID:
22082830
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 0074-1884; TRN: XA12N2048041829
Submitting Site:
INIS
Size:
page(s) 145-156
Announcement Date:
Apr 12, 2013

Conference:

Citation Formats

Sedlmeyer, J W, Patten, R B, and Fussell, L Jr. Analyser for fast single events; Analyseur d'evenements rapides simples; Analizator bystrykh odnokratnykh yavlenij; Analizador de sucesos rapidos no recurrentes. IAEA: N. p., 1962. Web.
Sedlmeyer, J W, Patten, R B, & Fussell, L Jr. Analyser for fast single events; Analyseur d'evenements rapides simples; Analizator bystrykh odnokratnykh yavlenij; Analizador de sucesos rapidos no recurrentes. IAEA.
Sedlmeyer, J W, Patten, R B, and Fussell, L Jr. 1962. "Analyser for fast single events; Analyseur d'evenements rapides simples; Analizator bystrykh odnokratnykh yavlenij; Analizador de sucesos rapidos no recurrentes." IAEA.
@misc{etde_22082830,
title = {Analyser for fast single events; Analyseur d'evenements rapides simples; Analizator bystrykh odnokratnykh yavlenij; Analizador de sucesos rapidos no recurrentes}
author = {Sedlmeyer, J W, Patten, R B, and Fussell, L Jr}
abstractNote = {An electronic analyser has been designed and constructed for use with single non-recurring transient signals. The signal, during passage along a coaxial line, is sampled instantaneously at a number of tap-off points, by means of a single short-duration gate pulse. Multipoint time-dissection is accomplished using a gate-duration and a time-interval between samples, which are independently adjustable from about 4 ns. The time-intervals may be programmed in non-linear array, and jitter is less than 0.5 ns. The speed of response is at present limited by diode characteristics. Each sampled voltage is stretched in a circuit which retains the voltage amplitude. A time-stretch by a factor of 10{sup 8} has been realized, with good stability. These data points may be commutated and transmitted over open-wire to low-frequency recording systems ; they may be converted to digital form for rapid data-processing, using conventional equipment; and/or they may be presented visually. The analyser is advantageous, compared with high-speed oscilloscopy, when large numbers of single-transients require individual analysis; such requirements exist for investigations into fluctuations in the response of systems, or for production-testing of components. The analyser is advantageous when the data-analysis must be accomplished quickly after the signal event occurs; it is not necessary to develop films or to read them. The analyser is also advantageous when the analysis-computation centre is located remotely from the event. Applications of this technique in the nuclear field are many. Fluctuation studies of reactors and subcritical assemblies may be carried out rapidly by pulsed neutron techniques. The build-up and decay characteristics of detectors may be determined, together with analysis of statistics and fluctuations. The pulse shape of the radiation wave from nuclear accelerators may be measured. Neutron-spectrometry using the time-of-flight method may be facilitated. Isomeric studies involving half-lives in the range 10-1000 ns, together with scattering investigations, may be carried out quickly and precisely. This work was supported by the United States Atomic Energy Commission. (author) [French] Les auteurs ont concu et realise un analyseur electronique destine a l'etude de signaux transitoires simples non recurrents. Lors de son passage le long d'une ligne coaxiale, le signal fait l'objet de prelevements instantanes a un certain nombre de points de branchement, au moyen d'une impulsion unique de declenchement tres breve venant d'un circuit porte. On procede a une dissection suivant le temps en des points multiples, en employant une duree de declenchement et un intervalle entre les prelevements; cette duree et cet intervalle peuvent etre ajustes independamment a partir de 4 ns environ. Les intervalles peuvent etre programmes d'une facon non lineaire, et l'instabilite de la case de temps est inferieure a 0,5 ns. La vitesse de reponse est actuellement limitee par les caracteristiques de la diode. Chaque tension prelevee est allongee dans un circuit qui en conserve l'amplitude. On a pu multiplier la largeur de l'impulsion par 10{sup 8}, tout en maintenant une stabilite satisfaisante. Ces donnees de repere peuvent faire l'objet d'une permutation et d'une transmission par fil nu a des enregistreurs a basse frequence; on peut les convertir sous forme numerique aux fins de depouillement rapide, en utilisant des appareils classiques; on peut aussi, le cas echeant, leur donner une presentation visuelle. L'analyseur est plus avantageux que les oscillographes a grande vitesse, ou il est necessaire d'analyser individuellement un grand nombre de signaux transitoires isoles; on est d'ailleurs oblige de proceder de meme pour etudier les fluctuations de reponse des systemes, ou pour faire des essais de production sur les elements constitutifs. L'analyseur presente aussi des avantages lorsqu'il faut analyser les donnees aussitot apres que le signal s'est manifeste; il n'est pas non plus necessaire de developper ni d'interpreter des pellicules. L'analyseur est egalement utile lorsque le centre de calcul et d'analyse est eloigne du lieu ou se produit l'evenement. Cette technique l5eut avoir de nombreuses applications dans le domaine nucleaire. Les techniques de faisceaux puises de neutrons permettent de proceder rapidement a des etudes sur les fluctuations des caracteristiques des reacteurs et des ensembles sous-critiques. En meme temps qu'on analyse les donnees statistiques et les fluctuations, on peut determiner les caracteristiques d'accumulation et de temps de decroissance des detecteurs. Il est egalement possible de mesurer la forme d'impulsion de l'onde de rayonnement emise par les accelerateurs nucleaires. D'autre part, la spectrometrie des neutrons par la methode du temps de vol peut etre facilitee. Enfin, cette technique permet d'effectuer avec rapidite et precision des etudes sur les isomeres dont les periodes sont comprises entre 10 et 1000 ns, de meme que des recherches sur la diffusion. (author) [Spanish] Los autores han proyectado y construido un analizador electronico destinado a utilizarse con senales transitorias no recurrentes. La senal, al pasar a lo largo de una linea coaxial, es probada instantaneamente en una serie de puntos, por medio de un impulso de puerta de corta duracion. La diseccion multipuntual en el tiempo se ejecuta recurriendo a una duracion de puerta y un intervalo de tiempo entre las muestras tomadas, que pueden ajustarse independientemente a partir de unos 4 ns. Los intervalos de tiempo pueden programarse en una disposicion no lineal y la inestabilidad es inferior a 0,5 ns. La rapidez de respuesta queda limitada actualmente por las caracteristicas de los diodos. Cada tension tomada es alargada en un circuito que conserva la amplitud de la tension. Se ha alcanzado una extension en el tiempo de 10{sup 8} veces, con buena estabilidad. Estos datos pueden conmutarse y transmitirse a sistemas de registro de baja frecuencia; se puede darles forma digital para facilitar un rapido tratamiento de los datos con el empleo de los dispositivos corrientes; y pueden tambien presentarse visualmente. Comparado con los oscilografos rapidos, el analizador es mas ventajoso cuando se trata de analizar individualmente grandes cantidades de fenomenos transitorios distintos y no recurrentes; tal es el caso del estudio de las fluctuaciones en la respuesta de sistemas o el ensayo de componentes producidos en serie. Tambien es preferible el analizador cuando el analisis de los datos debe efectuarse en seguida de ocurrir el fenomeno ''senal'', puesto que no es preciso revelar peliculas ni interpretarlas. Asimismo presenta ventajas cuando el centro de computo del analisis esta situado lejos del lugar del suceso. Tiene multiples aplicaciones en el campo de la energia nuclear. Facilita el rapido estudio de las fluctuaciones en los reactores y conjuntos subcriticos mediante la tecnica de las fuentes pulsantes de neutrones. Permite determinar las caracteristicas de formacion y descenso del impulso en los detectores y hacer analisis de estadisticas y fluctuaciones. Es posible registrar con el la forma del impulso de la onda de radiacion de los aceleradores nucleares. Facilita la espectrometria neutronica por el metodo del tiempo de vuelo. Permite efectuar con rapidez y exactitud estudios isomericos en que intervienen periodos de semidesintegracion entre limites de 10 y 1000 ns, juntamente con investigaciones sobre dispersion. La Comision de Energia Atomica de los Estados Unidos presto su apoyo a este estudio. (author) [Russian] Byl skonstruirovan i postroen ehlektronnyj analizator dlya ispol'zovaniya s odnokratnykh nepovtoryayushchikhsya perekhodyashchikh signalakh. Vo vremya prokhoda signala vdol' koaksial'noj linii mgnovenno v tselom ryade tochek proiskhodit otbor, chto delaetsya pri pomoshchi odnokratnogo korotkogo vremennogo selektornogo impul'sa. Razbivka vremeni na mnogochislennye otrezki dostigaetsya pri pomoshchi vremennogo selektornogo impul'sa i intervala vremeni mezhdu otborom obraztsov, prichem i tot i drugoj mogut regulirovat'sya nezavisimo drug ot druga, nachinaya priblizitel'no s 4 nanosekund. Intervaly vremeni mogut zadavat'sya v nelinejnom poryadke, a razbros mezhdu nimi ne prevyshaet 0,5 nanosekund. Do nastoyashchego vremeni skorost' otvetnoj reaktsii ogranichivaetsya kharakteristikami dioda. Kazhdoe otobrannoe napryazhenie rasshiryaetsya v konture, kotoryj sokhranyaet amplitudu ehtogo napryazheniya. Udalos' osushchestvit' rasshirenie po vremeni v 10{sup 8} raz s sokhraneniem khoroshej ustojchivosti. Tochki pokazanij mogut soobshchat'sya i peredavat'sya po otkrytomu provodu v nizkochastotnoe registriruyushchee ustrojstvo, oni mogut byt' prevrashcheny v tsifrovye dannye dlya bystroj ikh obrabotki s pomoshch'yu obychnogo oborudovaniya; krome togo, ili vmesto ehtogo, oni mogut byt' dany vizual'no. Analizator imeet preimushchestva po sravneniyu s vysokoskorostnoj ostsiloskopiej, kogda trebuetsya provodit' individual'nyj analiz bol'shogo chisla odnokratnykh perekhodyashchikh signalov; ehto trebuetsya pri izuchenii kolebanij otvetnykh reaktsij sistem ili pri proizvodstvennykh ispytaniyakh komponentov. Analizator imeet preimushchestva, kogda analiz dannykh dolzhen proizvodit'sya neposredstvenno za poyavleniem signala; otpadaet neobkhodimost' proyavlyat' plenki ili prochityvat' ikh. Analizator udoben takzhe v tekh sluchayakh, kogda schetno-analiziruyushchij tsentr raspolozhen daleko ot mesta poyavleniya signala. EHtot metod shiroko primenyaetsya v oblasti yadernoj ehnergii. Metod pul'siruyushchikh nejtronov mozhet byt' primenen dlya bystrogo izucheniya kolebanij rezhima reaktorov i podkriticheskikh sborok. Mogut byt' opredeleny parametry nakopleniya i raspada detektorov i odnovremenno provodit'sya analiz statisticheskikh dannykh i kolebanij. Mozhet izmeryat'sya forma impul'sov radiatsionnykh voln, proizvodimykh yadernymi uskoritelyami. S pomoshch'yu metoda izmereniya vremeni proleta mozhno provodit' nejtronnuyu spektrometriyu. Mozhno provodit' bystrye i tochnye izomericheskie issledovaniya v otnoshenii izomerov s poluperiodom raspada v intervale ot 10 do 1000 nanosekund, a takzhe bystro i tochno opredelyat' rasseyanie. EHta rabota vypolnyalas' pri sodejstvii Komissii po atomnoj ehnergii SSHA. (author)}
place = {IAEA}
year = {1962}
month = {Apr}
}