Cryogenic Microcalorimeter System for Ultra-High Resolution Alpha-Particle Spectrometry

被引：5

作者：

Croce, M. P. ^{[1
]}

Bacrania, M. K. ^{[1
]}

Hoover, A. S. ^{[1
]}

Rabin, M. W. ^{[1
]}

Hoteling, N. J. ^{[1
]}

LaMont, S. P. ^{[1
]}

Plionis, A. A. ^{[1
]}

Dry, D. E. ^{[1
]}

Ullom, J. N. ^{[2
]}

Bennett, D. A. ^{[2
]}

Horansky, R. D. ^{[2
]}

Kotsubo, V. ^{[2
]}

Cantor, R. ^{[3
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[2] Natl Inst Stand & Technol, Boulder, CO 80303 USA

[3] Star Cryoelect, Santa Fe, NM USA

来源：

LOW TEMPERATURE DETECTORS LTD 13 | 2009年 / 1185卷

关键词：

microcalorimeter; alpha particle; transition-edge sensor;

D O I：

10.1063/1.3292448

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Microcalorimeters have been shown to yield unsurpassed energy resolution for alpha spectrometry, up to 1.06 keV FWHM at 5.3 MeV. These detectors use a superconducting transition-edge sensor (TES) to measure the temperature change in an absorber from energy deposited by an interacting alpha particle. Our system has four independent detectors mounted inside a liquid nitrogen/liquid helium cryostat. An adiabatic demagnetization refrigerator (ADR) cools the detector stage to its operating temperature of 80 mK. Temperature regulation with similar to 15-mu K peak-to-peak variation is achieved by PID control of the ADR. The detectors are voltage-biased, and the current signal is amplified by a commercial SQUID readout system and digitized for further analysis. This paper will discuss design and operation of our microcalorimeter alpha-particle spectrometer, and will show recent results.

引用

页码：741 / +

页数：2

共 6 条

[1]

BACRANIA MK, 2008, IEEE T NUCL SC UNPUB

[2]

HORANSKY RD, COMMUNICATION

[3] Superconducting calorimetric alpha particle sensors for nuclear nonproliferation applications [J].