title: Development and characterization of two-dimensional metallic magnetic calorimeter arrays for the high-resolution X-ray spectroscopy
creator: Hengstler, Daniel
subject: ddc-530
subject: 530 Physics
description: In the framework of this thesis the new two-dimensional detector array maXs30 was developed, fabricated and characterized. It is optimized for high-resolution X-ray  spectroscopy in the energy range up to 30 keV and consists of 8x8 individual metallic magnetic calorimeters. These detectors combine the good energy resolution of crystal spectrometers and the large energy bandwidth of semiconductor detectors and measure the energy of each absorbed photon by the resulting temperature change. This change is converted to a change of magnetization by the paramagnetic alloy Ag:Er, which is read out by sensitive SQUID magnetometers. The detector can be mounted on the side arm of a mobile dry dilution refrigerator and a new 32 channel acquisition system has been developed for this array. The intrinsic energy resolution of the maXs30 detector was measured to be 7.9 eV (FWHM) and a resolving power of almost 3000 was achieved for X-rays with an energy of 60 keV. The complete maXs system was successfully tested during several experiments at the heavy ion storage ring ESR at the GSI, where the Lyman series of Xe53+ and the Balmer series of U89+ were investigated.
date: 2017
type: Dissertation
type: info:eu-repo/semantics/doctoralThesis
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/23815/1/Dissertation.pdf
identifier: DOI:10.11588/heidok.00023815
identifier: urn:nbn:de:bsz:16-heidok-238154
identifier:   Hengstler, Daniel  (2017) Development and characterization of two-dimensional metallic magnetic calorimeter arrays for the high-resolution X-ray spectroscopy.  [Dissertation]     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/23815/
rights: info:eu-repo/semantics/openAccess
rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html
language: eng