CRYOGUY Education in Cryogenics
Guy GISTAU BAGUER's CV and background
Guy Gistau Baguer
Born: 22 June 1940 at Génos, France.
Married to Anna, no child.

Graduated from the French “École Nationale Supérieure des Arts et Métiers“.
Professional career
2000 – Present
Education in “Basics in Cryogenics” and “Helium Refrigeration”, , more specially dedicated to the helium refrigeration and liquefaction activity.(60 sessions as of July 2019).
International cryogenic consultant/adviser.

1975 – 2000 (retirement)
In charge of the helium refrigeration activity at Air Liquide, in the Sassenage (France) premises.
Design and development of the first automatic helium refrigerator/liquefier: HELIAL (1980).
Design, building and start-up of various plants; among them:
  • Tore Supra refrigerator: 300 W at 1.8 K integrating for the first time, cryogenic centrifugal compressors,
  • Participation to the CEBAF refrigerator (5 kW at 2.0 K, design and start up of the centrifugal cryogenic compressor train).
  • CERN 6 kW at 4.5 K refrigerator,
  • CERN LEP 12/18 kW at 4.5 K refrigerator
  • CERN LHC 18 kW at 4.5 K and 2.4 kW at 1.8 K refrigerator

1972 – 1975
Adviser for sales activity in specialty gases and helium for the company subsidiaries at Air Liquide head office, Paris.

1969 – 1972
Sales activity in specialty gases and helium at Air Liquide in Le Plessis Robinson (France).

1966 – 1969
Operation of an air separation plant, cylinder gas conditioning and distribution truck fleet at Air Liquide in Le Blanc Mesnil (France).

1965 – 1966
Building small helium liquefiers (with JT expansion only, no turbine) at Air Liquide in the Sassenage (France) workshops.
Other activities
Expert in Cryogenics at the European Community.
Author for "Les techniques de l'ingénieur", France.
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 "Cryogenics" journal.
Former-member (1984 – 2008) and former-Chairman (1998 – 2006) of the International Cryogenic Engineering Committee (ICEC).
Former member of the Board of the International Cryogenic Engineering Material.
9 patents in the field of helium refrigeration, among them:
US5205134 (A) - Gas liquefaction process and refrigeration plant. 1993-04-27. This patent is related to the cold end of large helium refrigerators operating mainly in a refrigerator regime. It allows reducing the cold end mass flow rate and therefore reaching high cycle effectiveness.
US6170290 (B1) - Refrigeration process and plant using a thermal cycle of a fluid having a low boiling point. 2001-01-09. This patent is related to the cold end of large helium refrigerators operating mainly in the liquefier regime. It allows reducing the cold end mass flow rate and therefore reaching high cycle effectiveness.
DE60319699 (T2) - Method and installation for controlling at least one cryogenic centrifugal compressor, compression line. 2009-03-26. This patent is related to cryogenic centrifugal compression. It describes a control procedure for cool down and steady state operation.
US5941095 (A) - Process for the compression of a gas at low temperature and low pressure, and corresponding compression line and refrigeration installation. 1999-08-24. This patent is related to pure cryogenic centrifugal compression (no volumetric compressor downstream of the centrifugal machines). It describes an arrangement that allows processing less than half the nominal mass flow rate at same total compression ratio without hitting the surge line.
52 papers given in domestic and international conferences. Among them:
How to efficiently control the power of a tokamak cryogenic system. ICEC 23, Wroclaw, 2010
Various ways to smooth energy pulses into the cryogenic system of a tokamak. ICEC 23, Wroclaw, 2010
High power refrigeration at temperatures around 2.0 K. ICEC 16, 1996
Two large 18 kW (equivalent power at 4.5 K) helium refrigerators for CERN's LHC project, supplied by Air Liquide, CEC, 1999
A 12/18 kW at4.5 K helium refrigerator for CERN's LEP superconducting accelerating cavities. ICEC 15, 1994
Design of a large 2.0 K refrigerator for CEBAF. Supercollider 3, 1991
Design of the cryogenic system for the Tore Supra tokamak. Cryogenics, volume 26, 1986

11 publications in various technical magazines.

"Almost fifty years of cryogenics",
in Cold Facts, April 2014, Volume 30, number 2
Almost fifty years of cryogenics Download Almost fifty years of cryogenics
In the French “Techniques de l’Ingénieur”:
Épuration et liquéfaction de l'hélium, J 3 605, 2009
Liquéfaction de l'hélium et réfrigération à l'hélium de moyennes et fortes puissance, BE 9 816, 2012
The 2007 "Charles TELLIER" medal from the "Association Française du Froid".

The 2020 "Mendelssohn award" from the International Cryogenic Engineering Committee. However, due to the Covid-19 situation, the conference has been shifted to 2020; therefore, the prize will be presented at this occasion.