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Measuring Fundamental Nuclear Data Using Metallic Magnetic Calorimeters: The European “Metrommc” Project
June 17, 2020 (HP141). Metallic magnetic calorimeters (MMCs) are low-energy radiation detectors, operated usually below 100 mK, and consisting of an energy absorber in thermal contact with a metallic paramagnetic temperature sensor. The sensor is in a region where a weak magnetic field is applied, so that a temperature increase due to radiation absorption produces a change in the sensor magnetization detectable by a superconducting quantum interference device (SQUID) as a change of magnetic flux. These detectors have shown in recent years to possess the unique combination of high-resolution, low energy threshold, and high degree of linearity, all of which are needed for precise measurement of low-energy nuclear and atomic radiation. Several projects worldwide are currently ongoing to exploit MMCs in a variety of fields including nuclear, particle physics and astrophysics, medical, nuclear safeguard, and nuclear forensics.
Submitted by The MetroMMC collaboration