Eur. Phys. J. B 58, 243-249 (2007)
https://doi.org/10.1140/epjb/e2007-00222-4

Magnetic calorimeter for registration of small energy release

¹ P.N. Lebedev Physical Institute, Russian Academy of Sciences, Leninskii prospect, 53, Moscow, 119991, Russia
² Department of Physics, Moscow Aviation Institute (State Technical University), Volokolamskoe shosse, 4, Moscow, 125872, Russia

Corresponding author: ^a golov@sci.lebedev.ru

Received: 25 May 2006
Revised: 24 May 2007
Published online: 8 September 2007

Abstract

A scheme of magnetic calorimeter for registration of rare events characterized by small energy release (cosmic rays, WIMPs, solitary X-ray quanta) is proposed. The calorimeter is brought to operation by adiabatic demagnetization, and its magnetic response is measured by a quantum interferometer (SQUID, A. Barone and G. Paterno, Physics and applications of Josephson Effect). Special consideration is given to the specific features of calorimeter operation in the ferromagnetic transition region. The trigger registration of ultrasmall energy release by a ferromagnetic system in the metastable state is described.