The first time, to my knowledge,
that an effort was made to collect all possible information about the many cold
neutron sources (CNS) in the world,
was by Guy Gistau (then L'Air
Liquide) at the IGORR6 meeting in
Taejon (now Daejeon), Korea. Guy’s findings, however, have never been really
divulged.
Having been involved in the
gestation and birth of quite a number of CNS myself, I decided to compile, from
both my own files and Guy Gistau's data base, a first version of the
"World Directory of CNS".
In view of the growing activity in
the field of ultra-cold neutrons (UCN), I have renamed the “World
Directory of CNS” (from version 3) to:
"World
Directory of Cold and Ultra-cold Neutron Sources".
The CNS are presented in
alphabetical order of the sites.
As of today (2007), I have
identified 36 operating CNS, 6 under construction and about 6 planned. Some of
the planned CNS are mentioned at sites which are already in the list for other
reasons, like ISIS Second Target Station at Chilton, PIK at Gatchina and IBR-2M
at Dubna.
The
following sites that had used a CNS have since been shut down (with the year of
shut down):
Grenoble (Siloette) 1970 Saclay (EL3) 1977 Helsinki 1984
(?) Harwell 1990 Brookhaven 1999 Garching (FRM) 2000 Juelich 2005 |
Argonne (ZING-P) 1975 Argonne (ZING-P') 1980 Karlsruhe 1981 Aldermaston 1988 Beijing (HWRR) 1995
(?) Risoe 2000 Cornell 2001 |
Dedicated existing or planned sources of UCN have been included in the
site list below. Most have been
developed until now essentially at places which also exploit a classical cold
source. However, in future this
may no longer be true (e.g. Mainz, CERN, PSI, LANL).
The last pages
contain a Glossary of used and useful terms, and a list of people
mentioned in this document.
To access useful
links (site information, proceedings and transactions of conferences,
workshops, meetings), click on the underlined blue text.
On the site www.ottosix.com, you can also find an
extended bibliography on CNS and UCN sources.
The following site also lists some interesting
neutron sources (not CNS!):
http://neutron.neutron-eu.net/n_about/n_where/worldwide.
I wish to thank
all former colleagues and all others, who contributed and helped me with their comments
to write and edit this directory.
Klaus H. Gobrecht, HYERES, France, (e-mail: klaus@ottosix.com),
June 2007