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The preparation of computer-supported methods for the analysis of radiation situation at particle accelerators and their exemplary application to the cooler synchrotron COSY; Die Bereitstellung computerunterstuetzter Methoden zur Analyse der Strahlungssituation an Teilchenbeschleunigern und deren exemplarische Anwendung auf das Cooler-Synchrotron COSY

Thesis/Dissertation:

Abstract

In this thesis the applicability of modern particle transport programs for the radiation protection of the new cooler synchrotron COSY has been investigated. Monte Carlo codes as the program system HERMES offer a large flexibility in geometry simulation and a wide spread applicability up to the GeV energy region because of its implemented physical models. These codes are very suitable for detailed analysis of radiation sources within the accelerator and for dose rate estimations behind radiation shields. Detailed calculations of double differentional flux spectra and surface dose rate distributions at a cylindrical standard target for different materials (iron, copper and lead) were done for 2.5GeV protons incident. In case of deep penetration problems it turns out, that the CPU-time requirement of the Monte Carlo codes increases rapidely. Therefore the Monte Carlo codes were coupled with a one-dimentional S{sub n} transport code to treat deep penetration problems in a reasonable computer CPU-time. For this purpose a new high energy neutron-{gamma} transport library was evaluated taking into account the upper energy limit of COSY with 2.8GeV. The needed cross sections have been calculated by using the physical models of one of the HERMES-codes. Several Fortran-routines were developed to get an automatically procedure,  More>>
Authors:
Publication Date:
Jan 01, 1991
Product Type:
Thesis/Dissertation
Report Number:
Juel-2435
Reference Number:
SCA: 663620; PA: DEN-92:000311; SN: 92000645190
Resource Relation:
Other Information: TH: Diss. Thesis; PBD: Jan 1991
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ACCELERATORS; RADIATION TRANSPORT; COMPUTERIZED SIMULATION; GEV RANGE 01-10; HEAVY ION ACCELERATORS; SYNCHROTRONS; BEAM COOLING; BEAM TRANSPORT; ION BEAMS; PROTON BEAMS; LEGENDRE POLYNOMIALS; MONTE CARLO METHOD; COMPUTER CALCULATIONS; H CODES; GEOMETRY; SHIELDING; ANGULAR DISTRIBUTION; DIFFERENTIAL CROSS SECTIONS; PARTICLE PRODUCTION; RADIATION PROTECTION; CYLINDRICAL CONFIGURATION; NEUTRONS; PROTONS; PIONS MINUS; PIONS PLUS; MUONS MINUS; MUONS PLUS; PHOTONS; GAMMA RADIATION; 663620; PHYSICS OF RADIATIONS OTHER THAN NEUTRONS
OSTI ID:
10112642
Research Organizations:
Forschungszentrum Juelich GmbH (Germany). Inst. fuer Kernphysik; Wuppertal Univ. (Gesamthochschule) (Germany)
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Other: ON: DE92758892; TRN: DE9200311
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
DEN
Size:
108 p.
Announcement Date:
Jun 30, 2005

Thesis/Dissertation:

Citation Formats

Moll, J. The preparation of computer-supported methods for the analysis of radiation situation at particle accelerators and their exemplary application to the cooler synchrotron COSY; Die Bereitstellung computerunterstuetzter Methoden zur Analyse der Strahlungssituation an Teilchenbeschleunigern und deren exemplarische Anwendung auf das Cooler-Synchrotron COSY. Germany: N. p., 1991. Web.
Moll, J. The preparation of computer-supported methods for the analysis of radiation situation at particle accelerators and their exemplary application to the cooler synchrotron COSY; Die Bereitstellung computerunterstuetzter Methoden zur Analyse der Strahlungssituation an Teilchenbeschleunigern und deren exemplarische Anwendung auf das Cooler-Synchrotron COSY. Germany.
Moll, J. 1991. "The preparation of computer-supported methods for the analysis of radiation situation at particle accelerators and their exemplary application to the cooler synchrotron COSY; Die Bereitstellung computerunterstuetzter Methoden zur Analyse der Strahlungssituation an Teilchenbeschleunigern und deren exemplarische Anwendung auf das Cooler-Synchrotron COSY." Germany.
@misc{etde_10112642,
title = {The preparation of computer-supported methods for the analysis of radiation situation at particle accelerators and their exemplary application to the cooler synchrotron COSY; Die Bereitstellung computerunterstuetzter Methoden zur Analyse der Strahlungssituation an Teilchenbeschleunigern und deren exemplarische Anwendung auf das Cooler-Synchrotron COSY}
author = {Moll, J}
abstractNote = {In this thesis the applicability of modern particle transport programs for the radiation protection of the new cooler synchrotron COSY has been investigated. Monte Carlo codes as the program system HERMES offer a large flexibility in geometry simulation and a wide spread applicability up to the GeV energy region because of its implemented physical models. These codes are very suitable for detailed analysis of radiation sources within the accelerator and for dose rate estimations behind radiation shields. Detailed calculations of double differentional flux spectra and surface dose rate distributions at a cylindrical standard target for different materials (iron, copper and lead) were done for 2.5GeV protons incident. In case of deep penetration problems it turns out, that the CPU-time requirement of the Monte Carlo codes increases rapidely. Therefore the Monte Carlo codes were coupled with a one-dimentional S{sub n} transport code to treat deep penetration problems in a reasonable computer CPU-time. For this purpose a new high energy neutron-{gamma} transport library was evaluated taking into account the upper energy limit of COSY with 2.8GeV. The needed cross sections have been calculated by using the physical models of one of the HERMES-codes. Several Fortran-routines were developed to get an automatically procedure, which is used to evaluate the results and determine Legendre polynominals of order P3, which had to be inserted as coefficients into the library. The coupling procedure between the programs has been automated by means of several Fortran-routines, which does transformation, normalisation and formatting of the flux-data. (orig./HST). [Deutsch] Im Rahmen dieser Arbeit wurde die Anwendbarkeit von Teilchen-Transport-Programmen auf Strahlenschutzbetrachtungen an Teilchenbeschleunigern am Beispiel des neuen Cooler-Synchrotrons COSY untersucht. Die im Programm-System HERMES zusammengefassten Monto-Carlo-Transport-Programme bieten eine hohe Flexibilitaet bei der Geometriesimulation und sind aufgrund der implementierten physikalischen Modelle bis in den GeV-Bereich anwendbar. Sie erweisen sich als gut geeignet fuer die detaillierte Analyse von Strahlungsquellen innerhalb des Beschleunigers, sowie Dosisabschaetzungen innerhalb und ausserhalb duenner Abschirmungen. Intensive Rechnungen an einem Standard-Target lieferten doppelt-differentielle Ausflussspektren und Dosisoberflaechenverteilungen an Blei, Eisen und Kupfer. Da fuer die Untersuchung dicker Abschirmungen die Monte-Carlo Methode zu extremen Rechenzeitbedarf fuehrt, wurden fuer diese Anwendung Kopplungsrechnungen mit einem eindimensionalen S{sub n}-Transportprogramm durchgefuehrt. Die dafuer erforderliche Wirkungsquerschnitts-Bibliothek LAHI musste im Hinblick auf das konkrete COSY-Projekt und fuer spaetere Anwendungen im Energiebreich zwischen 800MeV und 2800MeV neu erstellt werden. Zur Ermittlung der bislang unbekannten Wirkungsquerschnitte wurden die physikalischen Modelle eines der HERMES-Programme genutzt und die fehlenden Daten in Monte-Carlo-Simulationen errechnet. Zur Auswertung, Entwicklung in Legendre-Polynome und Uebertragung der Daten wurden verschiedene Fortran-Routinen entwickelt, die eine systematische Erweiterung der LAHI-Bibliothek erlauben. Die Kopplungsprozedur konnte hinsichtlich der Transformation (Normierung, Formattierung) der zu uebergebenen Stromspektren durch die Entwicklung von Fortran-Service-Routinen weitgehend automatisiert werden. (orig./HSI).}
place = {Germany}
year = {1991}
month = {Jan}
}