Cryogenic tunable microwave cavity at 13 GHz for hyperfine spectroscopy of antiprotonic helium

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For the precise measurement of the hyperfine structure of antiprotonic helium, microwave radiation of 12.9 GHz frequency is needed, tunable over . A cylindrical microwave cavity is used whose front and rear faces are meshed to allow the antiprotons and laser beams to enter. The cavity is embedded in...

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Autores principales: Sakaguchi, J, Gilga, H, Hayano, R S, Ishikawa, T, Suzukia, K, Widmann, E, Yamaguchi, H, Caspers, Friedhelm, Eades, John, Horib, M, Barna, D, Horváth, D, Juhász, B, Torie, H A, Yamazakif, T
Lenguaje:eng
Publicado: 2004
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/811334
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author Sakaguchi, J
Gilga, H
Hayano, R S
Ishikawa, T
Suzukia, K
Widmann, E
Yamaguchi, H
Caspers, Friedhelm
Eades, John
Horib, M
Barna, D
Horváth, D
Juhász, B
Torie, H A
Yamazakif, T
author_facet Sakaguchi, J
Gilga, H
Hayano, R S
Ishikawa, T
Suzukia, K
Widmann, E
Yamaguchi, H
Caspers, Friedhelm
Eades, John
Horib, M
Barna, D
Horváth, D
Juhász, B
Torie, H A
Yamazakif, T
author_sort Sakaguchi, J
collection CERN
description For the precise measurement of the hyperfine structure of antiprotonic helium, microwave radiation of 12.9 GHz frequency is needed, tunable over . A cylindrical microwave cavity is used whose front and rear faces are meshed to allow the antiprotons and laser beams to enter. The cavity is embedded in a cryogenic helium gas target. Frequency tuning of with Q values of 2700?3000 was achieved using over-coupling and an external triple stub tuner. We also present Monte-Carlo simulations of the stopping distribution of antiprotons in the low-density helium gas using the GEANT4 package with modified energy loss routines.
id cern-811334
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2004
record_format invenio
spelling cern-8113342019-09-30T06:29:59Zhttp://cds.cern.ch/record/811334engSakaguchi, JGilga, HHayano, R SIshikawa, TSuzukia, KWidmann, EYamaguchi, HCaspers, FriedhelmEades, JohnHorib, MBarna, DHorváth, DJuhász, BTorie, H AYamazakif, TCryogenic tunable microwave cavity at 13 GHz for hyperfine spectroscopy of antiprotonic heliumDetectors and Experimental TechniquesFor the precise measurement of the hyperfine structure of antiprotonic helium, microwave radiation of 12.9 GHz frequency is needed, tunable over . A cylindrical microwave cavity is used whose front and rear faces are meshed to allow the antiprotons and laser beams to enter. The cavity is embedded in a cryogenic helium gas target. Frequency tuning of with Q values of 2700?3000 was achieved using over-coupling and an external triple stub tuner. We also present Monte-Carlo simulations of the stopping distribution of antiprotons in the low-density helium gas using the GEANT4 package with modified energy loss routines.oai:cds.cern.ch:8113342004
spellingShingle Detectors and Experimental Techniques
Sakaguchi, J
Gilga, H
Hayano, R S
Ishikawa, T
Suzukia, K
Widmann, E
Yamaguchi, H
Caspers, Friedhelm
Eades, John
Horib, M
Barna, D
Horváth, D
Juhász, B
Torie, H A
Yamazakif, T
Cryogenic tunable microwave cavity at 13 GHz for hyperfine spectroscopy of antiprotonic helium
title Cryogenic tunable microwave cavity at 13 GHz for hyperfine spectroscopy of antiprotonic helium
title_full Cryogenic tunable microwave cavity at 13 GHz for hyperfine spectroscopy of antiprotonic helium
title_fullStr Cryogenic tunable microwave cavity at 13 GHz for hyperfine spectroscopy of antiprotonic helium
title_full_unstemmed Cryogenic tunable microwave cavity at 13 GHz for hyperfine spectroscopy of antiprotonic helium
title_short Cryogenic tunable microwave cavity at 13 GHz for hyperfine spectroscopy of antiprotonic helium
title_sort cryogenic tunable microwave cavity at 13 ghz for hyperfine spectroscopy of antiprotonic helium
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/811334
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