Pulsed neutron fields measurements around a synchrotron storage ring

Marco Caresana; Marcello Ballerini; David Garf Ulfbeck; Niels Hertel; Giacomo Paolo Manessi; Carsten Søgaard

doi:10.1051/epjconf/201715301007

Pulsed neutron fields measurements around a synchrotron storage ring

Marco Caresana, Marcello Ballerini, David Garf Ulfbeck, Niels Hertel, Giacomo Paolo Manessi, Carsten Søgaard

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Abstract

A measurement campaign was performed for characterizing the neutron ambient dose equivalent, H∗(10), in selected positions at ISA, Aarhus, Denmark, around the ASTRID and ASTRID2 storage rings. The neutron stray radiation field is characterized here by very intense radiation bursts with a low repetition rate, which result in a comparatively low average H∗(10) rate. As a consequence, devices specifically conceived for operating in pulsed neutron fields must be employed for efficiently measuring in this radiation environment, in order to avoid severe underestimations of the H∗(10) rate. The measurements were performed with the ELSE NUCLEAR LUPIN 5401 BF3-NP rem counter, a detector characterized by an innovative working principle that is not affected by dead time losses. This allowed characterizing both the H∗(10) and the time structure of the radiation field in the pre-selected positions.

Original language	English
Article number	01007
Journal	E P J Web of Conferences
Volume	153
ISSN	2100-014X
DOIs	https://doi.org/10.1051/epjconf/201715301007
Publication status	Published - 25 Sept 2017

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title = "Pulsed neutron fields measurements around a synchrotron storage ring",

abstract = "A measurement campaign was performed for characterizing the neutron ambient dose equivalent, H∗(10), in selected positions at ISA, Aarhus, Denmark, around the ASTRID and ASTRID2 storage rings. The neutron stray radiation field is characterized here by very intense radiation bursts with a low repetition rate, which result in a comparatively low average H∗(10) rate. As a consequence, devices specifically conceived for operating in pulsed neutron fields must be employed for efficiently measuring in this radiation environment, in order to avoid severe underestimations of the H∗(10) rate. The measurements were performed with the ELSE NUCLEAR LUPIN 5401 BF3-NP rem counter, a detector characterized by an innovative working principle that is not affected by dead time losses. This allowed characterizing both the H∗(10) and the time structure of the radiation field in the pre-selected positions.",

author = "Marco Caresana and Marcello Ballerini and Ulfbeck, {David Garf} and Niels Hertel and Manessi, {Giacomo Paolo} and Carsten S{\o}gaard",

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T1 - Pulsed neutron fields measurements around a synchrotron storage ring

AU - Caresana, Marco

AU - Ballerini, Marcello

AU - Ulfbeck, David Garf

AU - Hertel, Niels

AU - Manessi, Giacomo Paolo

AU - Søgaard, Carsten

PY - 2017/9/25

Y1 - 2017/9/25

N2 - A measurement campaign was performed for characterizing the neutron ambient dose equivalent, H∗(10), in selected positions at ISA, Aarhus, Denmark, around the ASTRID and ASTRID2 storage rings. The neutron stray radiation field is characterized here by very intense radiation bursts with a low repetition rate, which result in a comparatively low average H∗(10) rate. As a consequence, devices specifically conceived for operating in pulsed neutron fields must be employed for efficiently measuring in this radiation environment, in order to avoid severe underestimations of the H∗(10) rate. The measurements were performed with the ELSE NUCLEAR LUPIN 5401 BF3-NP rem counter, a detector characterized by an innovative working principle that is not affected by dead time losses. This allowed characterizing both the H∗(10) and the time structure of the radiation field in the pre-selected positions.

AB - A measurement campaign was performed for characterizing the neutron ambient dose equivalent, H∗(10), in selected positions at ISA, Aarhus, Denmark, around the ASTRID and ASTRID2 storage rings. The neutron stray radiation field is characterized here by very intense radiation bursts with a low repetition rate, which result in a comparatively low average H∗(10) rate. As a consequence, devices specifically conceived for operating in pulsed neutron fields must be employed for efficiently measuring in this radiation environment, in order to avoid severe underestimations of the H∗(10) rate. The measurements were performed with the ELSE NUCLEAR LUPIN 5401 BF3-NP rem counter, a detector characterized by an innovative working principle that is not affected by dead time losses. This allowed characterizing both the H∗(10) and the time structure of the radiation field in the pre-selected positions.

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DO - 10.1051/epjconf/201715301007

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JO - EPJ Web of Conferences

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Pulsed neutron fields measurements around a synchrotron storage ring

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