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Measurement of pair-production by high energy photons in an aligned tungsten crystal
A new measurement has been made of the rate of pair production in a 3.2 mm thick tungsten crystal, exposed to photons with energies in the range 10 to 150 GeV, for angles of incidence up to 10 mrad from the crystal axis. A strong enhancement of the pair-production rate is observed when the beam is a...
| Autores principales: | , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
1995
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/0168-583X(96)00347-3 http://cds.cern.ch/record/290965 |
| _version_ | 1780888622033010688 |
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| author | Moore, R Parker, M A Baurichter, A Kirsebom, K Medenwaldt, R Mikkelsen, U Møller, S P Uggerhøj, Erik Worm, T Doble, Niels T Elsener, K Ballestrero, S Sona, P Strakhovenko, V M Biino, C Vilakazi, Z Z |
| author_facet | Moore, R Parker, M A Baurichter, A Kirsebom, K Medenwaldt, R Mikkelsen, U Møller, S P Uggerhøj, Erik Worm, T Doble, Niels T Elsener, K Ballestrero, S Sona, P Strakhovenko, V M Biino, C Vilakazi, Z Z |
| author_sort | Moore, R |
| collection | CERN |
| description | A new measurement has been made of the rate of pair production in a 3.2 mm thick tungsten crystal, exposed to photons with energies in the range 10 to 150 GeV, for angles of incidence up to 10 mrad from the crystal axis. A strong enhancement of the pair-production rate is observed when the beam is aligned along the <100> crystal axis, as compared to a random orientation. This effect can be exploited in the NA48 CP- violation experiment by using a thin crystal rather than an amorphous material to convert photons, thus minimising the scattering of kaons in the converter. |
| id | cern-290965 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 1995 |
| record_format | invenio |
| spelling | cern-2909652023-05-05T12:57:20Zdoi:10.1016/0168-583X(96)00347-3http://cds.cern.ch/record/290965engMoore, RParker, M ABaurichter, AKirsebom, KMedenwaldt, RMikkelsen, UMøller, S PUggerhøj, ErikWorm, TDoble, Niels TElsener, KBallestrero, SSona, PStrakhovenko, V MBiino, CVilakazi, Z ZMeasurement of pair-production by high energy photons in an aligned tungsten crystalAccelerators and Storage RingsA new measurement has been made of the rate of pair production in a 3.2 mm thick tungsten crystal, exposed to photons with energies in the range 10 to 150 GeV, for angles of incidence up to 10 mrad from the crystal axis. A strong enhancement of the pair-production rate is observed when the beam is aligned along the <100> crystal axis, as compared to a random orientation. This effect can be exploited in the NA48 CP- violation experiment by using a thin crystal rather than an amorphous material to convert photons, thus minimising the scattering of kaons in the converter.CERN-SL-95-79-EAoai:cds.cern.ch:2909651995-10-30 |
| spellingShingle | Accelerators and Storage Rings Moore, R Parker, M A Baurichter, A Kirsebom, K Medenwaldt, R Mikkelsen, U Møller, S P Uggerhøj, Erik Worm, T Doble, Niels T Elsener, K Ballestrero, S Sona, P Strakhovenko, V M Biino, C Vilakazi, Z Z Measurement of pair-production by high energy photons in an aligned tungsten crystal |
| title | Measurement of pair-production by high energy photons in an aligned tungsten crystal |
| title_full | Measurement of pair-production by high energy photons in an aligned tungsten crystal |
| title_fullStr | Measurement of pair-production by high energy photons in an aligned tungsten crystal |
| title_full_unstemmed | Measurement of pair-production by high energy photons in an aligned tungsten crystal |
| title_short | Measurement of pair-production by high energy photons in an aligned tungsten crystal |
| title_sort | measurement of pair-production by high energy photons in an aligned tungsten crystal |
| topic | Accelerators and Storage Rings |
| url | https://dx.doi.org/10.1016/0168-583X(96)00347-3 http://cds.cern.ch/record/290965 |
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