Recoil polarization measurements
Polarization observables in photon-induced meson production off nucleons have long been recognized to hold the promise of a detailed understanding of the excited states in the excitation spectrum of the nucleon. Photon beam and proton target polarization are routinely used at the ELSA facility in th...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2017-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://doi.org/10.1051/epjconf/201713403007 |
| _version_ | 1818456159950995456 |
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| author | Brinkmann Kai-Thomas |
| author_facet | Brinkmann Kai-Thomas |
| author_sort | Brinkmann Kai-Thomas |
| collection | DOAJ |
| description | Polarization observables in photon-induced meson production off nucleons have long been recognized to hold the promise of a detailed understanding of the excited states in the excitation spectrum of the nucleon. Photon beam and proton target polarization are routinely used at the ELSA facility in the Crystal Barrel/TAPS experiment and have yielded a wealth of data on contributing partial waves and nucleon resonances. A detector study on how to complement these ongoing studies by recoil polarization measurements that offer an orthogonal approach with otherwise unmeasurable observables in the field of non-strange meson photoproduction has been performed.
Building on experience with silicon detectors operated in the photon beamline environment, first possible layouts of Si detector telescopes for recoil protons were developed. Various geometries, e.g. Archimedean spiral design of annular sensors, sector shapes and rectangular sensors were studied and have been used during test measurements. A prototype for the recoil polarimeter was built and subjected to performance tests in protonproton scattering at the COSY-accelerator in Jülich. |
| first_indexed | 2024-12-14T22:22:15Z |
| format | Article |
| id | doaj.art-7743789d5d664003895cf3cd634521ff |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-14T22:22:15Z |
| publishDate | 2017-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-7743789d5d664003895cf3cd634521ff2022-12-21T22:45:29ZengEDP SciencesEPJ Web of Conferences2100-014X2017-01-011340300710.1051/epjconf/201713403007epjconf_sfbtr2017_03007Recoil polarization measurementsBrinkmann Kai-Thomas0II. Physikalisches Institut, Justus-Liebig-Universität GießenPolarization observables in photon-induced meson production off nucleons have long been recognized to hold the promise of a detailed understanding of the excited states in the excitation spectrum of the nucleon. Photon beam and proton target polarization are routinely used at the ELSA facility in the Crystal Barrel/TAPS experiment and have yielded a wealth of data on contributing partial waves and nucleon resonances. A detector study on how to complement these ongoing studies by recoil polarization measurements that offer an orthogonal approach with otherwise unmeasurable observables in the field of non-strange meson photoproduction has been performed. Building on experience with silicon detectors operated in the photon beamline environment, first possible layouts of Si detector telescopes for recoil protons were developed. Various geometries, e.g. Archimedean spiral design of annular sensors, sector shapes and rectangular sensors were studied and have been used during test measurements. A prototype for the recoil polarimeter was built and subjected to performance tests in protonproton scattering at the COSY-accelerator in Jülich.https://doi.org/10.1051/epjconf/201713403007 |
| spellingShingle | Brinkmann Kai-Thomas Recoil polarization measurements EPJ Web of Conferences |
| title | Recoil polarization measurements |
| title_full | Recoil polarization measurements |
| title_fullStr | Recoil polarization measurements |
| title_full_unstemmed | Recoil polarization measurements |
| title_short | Recoil polarization measurements |
| title_sort | recoil polarization measurements |
| url | https://doi.org/10.1051/epjconf/201713403007 |
| work_keys_str_mv | AT brinkmannkaithomas recoilpolarizationmeasurements |