Grenoble ILL

Organisation:            Institut Laue-Langevin (ILL)

Installation:                 HFR

Type:                          pool reactor 57 MW, HEU, D2O reflector, th=15·1014 n/cms,

Address:                    6 rue Jules Horowitz, BP 156
38042 Grenoble Cedex 9, France

Home page:    

Head of reactor:            Herv Guyon

Phone / fax:               +33 476-207000, fax -961143

Secretary:                  207237


CNS:                          two, one vertical (SFV3), operating since 1985,
one horizontal (SFH), operating since 1987

moderator:                 D2                               temperature:             25 K

volume:                      27 L (SFV3), 6 L (SFH)       phase:            liquid

material: chamber:            Al99%                                    vacuum thimble:            Zircaloy

power:                        6500 W (SFV3),       3000 W (SFH)                     

refrigerator                AL, 2 turbines, 1 screw compressor         625 kWel.

heat removal:            gravity, thermal siphon (SFV3),     bubble pump (SFH)


remarks:                    reactor has to stop in case of CNS failure.
One vertical guide in SFV3 for VCN and UCN production.
SFV1 was operating from 1972 to 1985.

A third CNS is planned (H. Guyon, private communication) see also IGORR2007, session 1.


recent publications: K. Gobrecht in Proc. Workshop on Cold Sources at LANSCE, Los Alamos, 1990, p.19
H. Guyon on various workshops

UCN Group around Peter Geltenbort

Steyerl turbine + 3 UCN guides

recent publications:            ICANS-XV (Tsukuba 2000): 22.2,
V.V. Nesvizhevsky et al. in Nature 415, 297 (2002),

 P. Geltenbort at UCN_6 Workshop 2007 in Russia (see Gatchina)