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Abstract
The International Union of Pure and Applied Physics (IUPAP) has been concerned since 1998 about the “future of neutrons,” and the socalled “neutron gap” that may arise as older sources are shut down before the newer sources come on line. To address that issue IUPAE charged a committee to look into the manner, and previous meetings have been held in Los Angeles (1998) and Budapest (1999) and now in Mito, in November 2000, to consider setting up a working group for the “future of neutron sources.” The one and a half day meeting heard reports from many (but not all) of the presently operating facilities, from representatives of the societies (e.g. NSSA of the US, ENSA of Europe, and NSAJ of Japan) and from operators of sources either in construction at Oak Ridge (SNS), Munich (FRM), and Australia, or proposed new ones at JAERI (the Joint Project) and in Europe (ESS).