Performance of a microcalorimeter with a superconducting transition edge thermometer

Authors
Hoevers, HFC Bento, AC Bruijn, MP Gottardi, L Korevaar, MAN Mels, WA de Korte, PAJ
Citation
Hfc. Hoevers et al., Performance of a microcalorimeter with a superconducting transition edge thermometer, NUCL INST A, 444(1-2), 2000, pp. 192-195
Citations number
11
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
444
Issue
1-2
Year of publication
2000
Pages
192 - 195
Database
ISI
SICI code
0168-9002(20000411)444:1-2<192:POAMWA>2.0.ZU;2-M
Abstract
The performance of a single-pixel microcalorimeter is described and analyze d. The microcalorimeter has a Cu absorber which is isolated from the heat b ath by means of a SixNy membrane and is connected to a voltage-biased Ti/Au proximity bilayer thermometer with a transition temperature of about 150 m K. The measured FWHM energy resolution for 5.9 keV X-ray photons is 12.4 eV for this sensor while 2.36(k(B)T(2)C)(1/2) equals 9.1 eV. The detector tim e constant is about 1 ms. The measured current-voltage characteristic and c urrent noise spectra are analyzed in detail in the context of the energy re solution. High frequency excess noise is measured in the superconducting tr ansition and is briefly discussed. (C) 2000 Elsevier Science B.V. All right s reserved.