View in EDS

Caliste-MM: Polarimetric measurements at the Soleil facility.

Saved in:
Bibliographic Details
Title: Caliste-MM: Polarimetric measurements at the Soleil facility.
Authors: Serrano, P.1 paul.serrano@cea.fr, Da Silva, P.2 paulo.dasilva@synchrotron-soleil.fr, Ferrer-Ribas, E.1 esther.ferrer-ribas@cea.fr, Limousin, O.1 olivier.limousin@cea.fr, Mercere, P.2 pascal.mercere@synchrotron-soleil.fr, Orsini, F.2 fabienne.orsini@synchrotron-soleil.fr
Source: Nuclear Instruments & Methods in Physics Research Section A. Dec2018, Vol. 912, p274-277. 4p.
Subjects: Polarimetry, Astrophysics, Photoelectrons, Polariscope, Nuclear counters
Abstract: Abstract Performing polarimetry in the soft X-ray range, from 1 keV to 15 keV, is a topic of high interest in the astrophysical community. However, for instrumental reasons, soft X-ray polarimetry has been performed only once so far by a mission on board the OSO-8 satellite in 1975. Since the early 2000's, thanks to the development of Micro Pattern Gaseous Detectors (MPGD), it is possible to perform polarimetry by measuring the azimuthal scattering anisotropy of the photoelectrons created during the detection of soft X-rays by photoelectric effect. The Caliste-MM detector is a gaseous polarimeter, using a novel design of contactless readout electronics to read the signal developed in the resistive anode of a piggyback micromegas detector. In this paper we present polarimetry measurements obtained with the Caliste-MM detector at the Soleil synchrotron facility. Photoelectrons tracks obtained in the beamline are shown, and the reconstruction method to find the photoelectrons azimuthal angle is described. We conclude by presenting the modulation curve obtained at 8 keV, with a modulation factor of the detector reaching 88%. [ABSTRACT FROM AUTHOR]
Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:Abstract Performing polarimetry in the soft X-ray range, from 1 keV to 15 keV, is a topic of high interest in the astrophysical community. However, for instrumental reasons, soft X-ray polarimetry has been performed only once so far by a mission on board the OSO-8 satellite in 1975. Since the early 2000's, thanks to the development of Micro Pattern Gaseous Detectors (MPGD), it is possible to perform polarimetry by measuring the azimuthal scattering anisotropy of the photoelectrons created during the detection of soft X-rays by photoelectric effect. The Caliste-MM detector is a gaseous polarimeter, using a novel design of contactless readout electronics to read the signal developed in the resistive anode of a piggyback micromegas detector. In this paper we present polarimetry measurements obtained with the Caliste-MM detector at the Soleil synchrotron facility. Photoelectrons tracks obtained in the beamline are shown, and the reconstruction method to find the photoelectrons azimuthal angle is described. We conclude by presenting the modulation curve obtained at 8 keV, with a modulation factor of the detector reaching 88%. [ABSTRACT FROM AUTHOR]
ISSN:01689002
DOI:10.1016/j.nima.2017.11.079