Recent progress on the ATHENA Positron Accumulator

The Positron Accumulator for the ATHENA anti-hydrogen experiment at CERN, Geneva has recently been upgraded with a new 50 mCi /sup 22/Na beta /sup +/-radioactive source. Following this, rapid progress has been made in optimizing and characterizing the properties of the positron plasma. The rotating...

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Detalles Bibliográficos
Autores principales: Jørgensen, L V, Van der Werf, D P, Watson, T L, Charlton, M, Collier, M
Lenguaje:eng
Publicado: 2002
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.1063/1.1454265
http://cds.cern.ch/record/560336
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author Jørgensen, L V
Van der Werf, D P
Watson, T L
Charlton, M
Collier, M
author_facet Jørgensen, L V
Van der Werf, D P
Watson, T L
Charlton, M
Collier, M
author_sort Jørgensen, L V
collection CERN
description The Positron Accumulator for the ATHENA anti-hydrogen experiment at CERN, Geneva has recently been upgraded with a new 50 mCi /sup 22/Na beta /sup +/-radioactive source. Following this, rapid progress has been made in optimizing and characterizing the properties of the positron plasma. The rotating wall technique has also been implemented in the accumulation region and has been shown to lead to compression of better than a factor of 10 in density and markedly increased lifetimes, even when using the N/sub 2/ buffer gas as a cooling gas. Using these techniques we have routinely accumulated up to 2 * 10/sup 8/ positrons in a few minutes. The positron plasma has a FWHM of only 3-4 mm when using the rotating wall which compares with a FWHM of 15 mm without the rotating wall. (13 refs).
id cern-560336
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
record_format invenio
spelling cern-5603362020-08-28T08:05:20Zdoi:10.1063/1.1454265http://cds.cern.ch/record/560336engJørgensen, L VVan der Werf, D PWatson, T LCharlton, MCollier, MRecent progress on the ATHENA Positron AccumulatorAccelerators and Storage RingsThe Positron Accumulator for the ATHENA anti-hydrogen experiment at CERN, Geneva has recently been upgraded with a new 50 mCi /sup 22/Na beta /sup +/-radioactive source. Following this, rapid progress has been made in optimizing and characterizing the properties of the positron plasma. The rotating wall technique has also been implemented in the accumulation region and has been shown to lead to compression of better than a factor of 10 in density and markedly increased lifetimes, even when using the N/sub 2/ buffer gas as a cooling gas. Using these techniques we have routinely accumulated up to 2 * 10/sup 8/ positrons in a few minutes. The positron plasma has a FWHM of only 3-4 mm when using the rotating wall which compares with a FWHM of 15 mm without the rotating wall. (13 refs).oai:cds.cern.ch:5603362002
spellingShingle Accelerators and Storage Rings
Jørgensen, L V
Van der Werf, D P
Watson, T L
Charlton, M
Collier, M
Recent progress on the ATHENA Positron Accumulator
title Recent progress on the ATHENA Positron Accumulator
title_full Recent progress on the ATHENA Positron Accumulator
title_fullStr Recent progress on the ATHENA Positron Accumulator
title_full_unstemmed Recent progress on the ATHENA Positron Accumulator
title_short Recent progress on the ATHENA Positron Accumulator
title_sort recent progress on the athena positron accumulator
topic Accelerators and Storage Rings
url https://dx.doi.org/10.1063/1.1454265
http://cds.cern.ch/record/560336
work_keys_str_mv AT jørgensenlv recentprogressontheathenapositronaccumulator
AT vanderwerfdp recentprogressontheathenapositronaccumulator
AT watsontl recentprogressontheathenapositronaccumulator
AT charltonm recentprogressontheathenapositronaccumulator
AT collierm recentprogressontheathenapositronaccumulator

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