Electron polarization measurement using a Fabry-Perot cavity at HERA

A new Compton longitudinal polarimeter currently under construction for HERA is presented. The key component of the polarimeter is a Fabry-Perot cavity located around the electron beam pipe. With such an optical cavity, a continuous laser power equivalent to 5 kW, much higher than those commercially...

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Detalles Bibliográficos
Autor principal: Zhang, Z
Lenguaje:eng
Publicado: 2002
Materias:
Accelerators and Storage Rings
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.22323/1.007.0261
http://cds.cern.ch/record/533947
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author Zhang, Z
author_facet Zhang, Z
author_sort Zhang, Z
collection CERN
description A new Compton longitudinal polarimeter currently under construction for HERA is presented. The key component of the polarimeter is a Fabry-Perot cavity located around the electron beam pipe. With such an optical cavity, a continuous laser power equivalent to 5 kW, much higher than those commercially available, can be achieved, leading to one backscattered photon per bunch crossing. This ``few-photon mode'' will allow a very precise determination of the calorimeter response with little systematic uncertainty. The electron polarization measurement at the per mill level is expected.
id cern-533947
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
record_format invenio
spelling cern-5339472019-09-30T06:29:59Zdoi:10.22323/1.007.0261http://cds.cern.ch/record/533947engZhang, ZElectron polarization measurement using a Fabry-Perot cavity at HERAAccelerators and Storage RingsDetectors and Experimental TechniquesA new Compton longitudinal polarimeter currently under construction for HERA is presented. The key component of the polarimeter is a Fabry-Perot cavity located around the electron beam pipe. With such an optical cavity, a continuous laser power equivalent to 5 kW, much higher than those commercially available, can be achieved, leading to one backscattered photon per bunch crossing. This ``few-photon mode'' will allow a very precise determination of the calorimeter response with little systematic uncertainty. The electron polarization measurement at the per mill level is expected.hep-ex/0201033LAL-2001-87oai:cds.cern.ch:5339472002-01-21
spellingShingle Accelerators and Storage Rings
Detectors and Experimental Techniques
Zhang, Z
Electron polarization measurement using a Fabry-Perot cavity at HERA
title Electron polarization measurement using a Fabry-Perot cavity at HERA
title_full Electron polarization measurement using a Fabry-Perot cavity at HERA
title_fullStr Electron polarization measurement using a Fabry-Perot cavity at HERA
title_full_unstemmed Electron polarization measurement using a Fabry-Perot cavity at HERA
title_short Electron polarization measurement using a Fabry-Perot cavity at HERA
title_sort electron polarization measurement using a fabry-perot cavity at hera
topic Accelerators and Storage Rings
Detectors and Experimental Techniques
url https://dx.doi.org/10.22323/1.007.0261
http://cds.cern.ch/record/533947
work_keys_str_mv AT zhangz electronpolarizationmeasurementusingafabryperotcavityathera

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