SNF Issue No. 48, April 2020

In this Issue:

  • SCIENCE AND TECHNOLOGY HIGHLIGHT
  • INTERNATIONAL SYMPOSIUM ON APPLIED SUPERCONDUCTIVITY (ISS 2019): Selected Plenary and Invited Presentations

  • ASIAN CRYOGENIC AND APPLIED SUPERCONDUCTIVITY CONFERENCE/INTERNATIONAL CRYOGENIC MATERIALS CONFERENCE IN ASIA JOINT CONFERENCE (ACASC/ASIAN-ICMC/CSSJ JOINT CONFERENCE): Selected Plenary and Topical Presentations

Measuring Fundamental Nuclear Data Using Metallic Magnetic Calorimeters: The European “Metrommc” Project

Metallic Magnetic Calorimeter image

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.

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Submitted by The MetroMMC collaboration

 

A Tribute to Archie Campbell

Archie Campbell PA46

January 11, 2020 (PA46).  Archie was a Cambridge ‘lifer’. As we’ve heard, he came up to Cambridge in October 1959 and stayed. After graduating in Natural Sciences in 1962, Archie joined Jan Evetts and Anant Narlikar in David Dew-Hughes’ group in Materials Science and Metallurgy. Archie and Jan were to become life-long friends and colleagues and to make a joint contribution to the field of superconductivity that was to be internationally acclaimed and never surpassed. Both Archie and Jan were towering intellects in their own right, so together they were, quite simply, unstoppable.
 
On completion of their PhDs, Archie and Jan were on temporary contracts in Materials Science and Metallurgy until Jan was awarded a Lectureship in the Department. Archie was a Royal Society Fellow for a while, during which period the classic Campbell and Evetts monograph on Critical Currents in Superconductors was written. This extraordinary work, which was even translated into Russian, is considered to be the bible of applied superconductivity and has guided literally thousands of researchers, both young and old, in the subject now for almost 50 years.

 


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