Title :
Metallic Magnetic Calorimeters for X-Ray Spectroscopy
Author :
Fleischmann, Loredana ; Linck, M. ; Burck, A. ; Domesle, C. ; Kempf, S. ; Pabinger, A. ; Pies, C. ; Porst, J.P. ; Rotzinger, H. ; Schäfer, S. ; Weldle, R. ; Fleischmann, A. ; Enss, C. ; Seidel, G.M.
Author_Institution :
Kirchhoff-Inst. fur Phys., Univ. Heidelberg, Heidelberg
fDate :
4/1/2009 12:00:00 AM
Abstract :
An increasing number of experiments employ low-temperature radiation/particle detectors which are based on a calorimetric detection scheme and operate at temperatures below 100 mK. Metallic magnetic calorimeters use a metallic paramagnetic temperature sensor in tight thermal contact with the X-ray absorber. The magnetization of the sensor is used to monitor the temperature change of the detector upon the absorption of single photons, which is proportional to the absorbed energy. Low-noise high-bandwidth dc superconducting quantum interference devices read out the small changes in magnetization. An energy resolution of DeltaE FWHM = 2.7 eV was obtained for X-ray energies up to 6 keV.
Keywords :
SQUIDs; X-ray detection; X-ray spectroscopy; calorimeters; magnetic sensors; magnetisation; paramagnetism; temperature sensors; X-ray absorber; X-ray detector; X-ray spectroscopy; electron volt energy 2.7 eV; low-temperature radiation detector; metallic magnetic calorimeter; metallic paramagnetic temperature sensor; particle detector; sensor magnetization; superconducting quantum interference device; temperature change monitoring; thermal contact; Energy measurements; X-ray detectors; superconducting quantum interference devices (SQUIDs);
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2009.2012724
