Guy Gistau Baguer is a consultant in the field of cryogenics and helium refrigeration and liquefaction, with more than 50 years experience of building and operating cryogenic systems. From 1965 to 2000 he worked for Air Liquide, and since 2000 has been a consultant providing training courses in helium refrigeration engineering. He is a member of the A1/2 commission of the International Institute of Refrigeration (IIR), member of the "Association Française du Froid, Commission Cryogénie et Supraconductivité", former advisor editor for the journal Cryogenics journal, former-member (1984 - 2008) and former-Chairman (1998 - 2006) of the International Cryogenic Engineering Committee (ICEC), and former member of the Board of the International Cryogenic Engineering Material. He holds 9 patents in the field of helium refrigeration, and has presented over 50 papers in domestic and international conferences.In 2020, the International Cryogenic Engineering Committee awarded him the Mendelssohn prize.