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Study of a large solid angle π⁰ detector for the test experiment of symmetry charge dd→απ⁰

Pignault, G.
Paris-11 Univ., 91 - Orsay (France). Inst. de Physique Nucleaire; Paris-11 Univ., 91 - Orsay (France)1984

[en] This thesis presents the study of a large solid angle π⁰ detector, designed primarily for a charge-symmetry testing experiment (dd→απ⁰). It is a cylindrical multishell Cerenkov counter. In a first part, we review the experimental and theoretical situation of the studies about charge symmetry; past and experiments are listed, in connection with their theoretical interpretation. In a second part, we present first the principle and general design of the detector; after that, we reckon the performances of the various versions that are considered using computer-simulations. The results of tests with an electron beam is then compared with the simulations in order to assess their reliability. Finally, the arguments favouring the final choice are explained and some future experiments described

[fr]

Cette these presente l'etude d'un detecteur de π⁰ a grand angle solide destine a une experience de test de la symetrie de charge. Il s'agit d'un detecteur a effet Cerenkov, cylindrique, constitue de plusieurs couches. Dans une premiere partie, nous examinons la situation experimentale et theorique des etudes concernant la symetrie de charge; les experiences realisees ou en projet sont passees en revue, ainsi que leur interpretation theorique. Dans une deuxieme partie, nous presentons d'abord le principe et la conception generale du detecteur; ensuite nous evaluons les performances des diverses versions envisagees a partir de simulations informatiques. Le resultat de tests sur faisceau d'electrons est ensuite compare aux simulations pour en determiner leur fiabilite. Finalement, les arguments en faveur du choix final sont exposes et les quelques experiences realisables sont envisagees

Original Title

Etude d'un detecteur de π⁰ a grand angle solide destine a l'experience de test de la symetrie de charge dd→απ⁰

Primary Subject

INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY (E4130)

Source

1984; 248 p; These (D. Ing.).

Record Type

Report

Literature Type

Thesis/Dissertation

Report Number

IPNO-T--84-07

Country of publication

France

Descriptors (DEI)

ALPHA PARTICLES, BEAM ACCEPTANCE, CHARGE INDEPENDENCE, CHERENKOV COUNTERS, COMPUTERIZED SIMULATION, DEUTERIUM TARGET, DEUTERON REACTIONS, FEASIBILITY STUDIES, FOUR-PI COUNTING, GAMMA RADIATION, MEV RANGE 100-1000, PERFORMANCE, PION DETECTION, PIONS NEUTRAL, SHOWER COUNTERS, SYMMETRY

LanguageLanguage

French

Reference NumberReference Number

17089796

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

Aπ⁰ and γ detector with wide solid angle, the π⁰-4π

Pignault, G.; Berthet, P.; Didelez, J.P.
3. Saturne meeting1983

AbstractAbstract

[en] The π⁰ detector with 4π solid angle is described; the technical problems and its characteristics are presented. The existing π⁰ detectors are reviewed

[fr]

Le detecteur de π⁰ d'angle solide 4π est decrit; les problemes techniques et ses caracteristiques sont presentees. Les detecteurs de π⁰ existant sont passes en revue

Original Title

Un detecteur de π⁰ et de γ a grand angle solide, le π⁰-4π

Primary Subject

INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY (E4130)

Source

Laboratoire National Saturne, Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France); 748 p; ISBN 2-7272-0085-4;

; 1983; p. 331-342; Commissariat a l'Energie Atomique; Saclay (France); 3. Saturne meeting; Fontevraud (France); 25-29 Apr 1983; Available from Laboratoire National Saturne, CEN Saclay, 91 - Gif-sur-Yvette (France)

Record Type

Book

Literature Type

Conference

Country of publication

France

Descriptors (DEI)

FOUR-PI COUNTING, GAMMA DETECTION, PION DETECTION, PIONS NEUTRAL, RADIATION DETECTORS

Descriptors (DEC)

BOSONS, COUNTING TECHNIQUES, DETECTION, ELEMENTARY PARTICLES, HADRONS, MEASURING INSTRUMENTS, MESONS, PIONS, PSEUDOSCALAR MESONS, RADIATION DETECTION

LanguageLanguage

French

Reference NumberReference Number

15028783

Related RecordRelated Record

15013427

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

Angular distributions for /sup 16/O(/gamma/,p)/sup 15/N at intermediate energies

Adams, G.S.; Kinney, E.R.; Matthews, J.L.; Sapp, W.W.; Soos, T.; Owens, R.O.; Turley, R.S.; Pignault, G.1988

AbstractAbstract

[en] The photoproton knockout reaction on /sup 16/O leaving /sup 15/N in low-lying bound states has been observed over the photon energy range from 196 to 361 MeV. The angular distribution for the reaction populating the ground state of /sup 15/N develops sharp structure as the photon energy is increased but that for population of the excited states is smooth. The results are not explained by existing theoretical models

Primary Subject

NUCLEAR PHYSICS AND RADIATION PHYSICS (A3412)

Record Type

Journal Article

Journal

Physical Review, C; ISSN 0556-2813;

; CODEN PRVCA; v. 38(6); p. 2771-2776

Country of publication

United States

Descriptors (DEI)

ANGULAR DISTRIBUTION, CROSS SECTIONS, DISTORTED WAVE THEORY, ENERGY LEVELS, IMPULSE APPROXIMATION, KNOCK-OUT REACTIONS, MEV RANGE 100-1000, NITROGEN 15, OXYGEN 16 TARGET, PARITY, PHOTONUCLEAR REACTIONS, PHOTOPROTONS, PROTON SPECTRA, Q-VALUE, RECOILS, SPIN

Reference NumberReference Number

20021294

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

Analyzing powers for p vector+d→³He+π⁰ at 800 MeV

Adams, G.S.; Blanpied, G.S.; Mishra, C.S.; Pignault, G.; Whisnant, C.S.; Pauletta, G.1989

AbstractAbstract

[en] Analyzing powers for the exclusive pion production reaction p vector+d→³He+π⁰ have been measured at a proton beam energy of 800 MeV. The forward-angle results are in good accord with a microscopic calculation. The analyzing power is determined primarily by the Δ(1232) diagrams at this energy. Possible explanations for the large-angle discrepancies are discussed. (orig.)

Primary Subject

NUCLEAR PHYSICS AND RADIATION PHYSICS (A3411)

Record Type

Journal Article

Literature Type

Numerical Data

Journal

Physics Letters, (Section) B; ISSN 0370-2693;

; CODEN PYLBA; v. 219(4); p. 399-402

Country of publication

Netherlands

Descriptors (DEI)

CAPTURE, DEUTERIUM TARGET, EXCLUSIVE INTERACTIONS, EXPERIMENTAL DATA, HELIUM 3, MEV RANGE 100-1000, PARTICLE PRODUCTION, PIONS NEUTRAL, POLARIZATION-ASYMMETRY RATIO, POLARIZED BEAMS, PROTON REACTIONS

Reference NumberReference Number

20040224

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

Very backward π⁰ and eta⁰ production by proton projetiles on a deuterium target at intermediate energies

Berthet, P.; Frascaria, R.; Didelez, J.P.; Perdrisat, C.F.; Pignault, G.; Fabbri, F.; Picozza, P.; Satta, L.; Boivin, M.1985

AbstractAbstract

[en] The production of π⁰ and ν⁰ mesons in the reactions pd -> π⁰tau and pd -> μ⁰tau has been studied at very backward angles for kinetic proton energies Tsub(p) ranging from 0.92 to 2.6 GeV. The excitation functions at thetasub(π)=thetasub(μ)=180⁰ displays large structures which might be related to baryonic (Δ and Nsup(*)) excitations in the intermediate state. (orig.)

Primary Subject

NUCLEAR PHYSICS AND RADIATION PHYSICS (A3411)

Record Type

Journal Article

Literature Type

Numerical Data

Journal

Nuclear Physics. A; ISSN 0375-9474;

; CODEN NUPAB; v. 443(4); p. 589-600

Country of publication

Netherlands

Descriptors (DEI)

CAPTURE, DEUTERIUM TARGET, DIFFERENTIAL CROSS SECTIONS, ETA MESONS, EXCITATION FUNCTIONS, EXPERIMENTAL DATA, GEV RANGE 01-10, HELIUM 3, MEV RANGE 100-1000, PARTICLE PRODUCTION, PIONS NEUTRAL, PROTON REACTIONS, RELATIVISTIC RANGE

Reference NumberReference Number

17005626

INIS VolumeINIS Volume

INIS IssueINIS Issue

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