Aachen T 2003 – scientific programme

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T: Teilchenphysik

T 606: CP-Verletzung

T 606.1: Talk

Thursday, March 13, 2003, 10:30–10:45, SFO9

An intense ultra-cold neutron source at PSI — •M. Daum¹, F. Atchison¹, K. Bodek², B. van den Brandt¹, T. Brys¹, P. Fierlinger¹, A. Fomin³, P. Geltenbort⁴, M. Giersch⁵, W. Gloor¹, P. Hautle¹, G. Heidenreich¹, R. Henneck¹, St. Joray¹, S. Kalcheva³, A. Kharitonov³, K. Kirch¹, S. Kistryn², K. Kohlik¹, J. A. Konter¹, G. Kühne¹, M. Lasakov³, A. Magiera³, S. Mango¹, V. Mityukhlaev³, H. Obermaier¹, Ch. Perret¹, A. Pichlmaier¹, I. Potatpov³, U. Rohrer¹, M. Sazhin³, A. P. Serebrov^1,3, G. Shmelev³, I. Shoka³, V. Shustov³, R. Taldaev³, H. J. Temnitzer¹, D. Tytz³, V. Varlamov³, A. Vasiliev³, A. Zakharov³, and H. Zmeskal⁵ — ¹Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland — ²Jagellonian University, Cracow, Poland — ³Petersburg Nuclear Physics Institute, Gatchina, Russia — ⁴Institute Laue-Langevin, Grenoble, France — ⁵Österreichische Akademie der Wissenschaften, Wien, Austria

A new high intensity source for ultra-cold neutrons (UCN) is being built at PSI. It uses the full intensity proton beam of the PSI ring cyclotron (2 mA, 590 MeV) in macro pulses of a few seconds length. Spallation neutrons are produced on a heavy metal target, moderated in D₂O, cooled and partially down-scattered into UCN in solid D₂. The UCN are extracted into a storage volume, where we expect UCN densities of 3000 cm⁻³ on average in a 2 m³ volume. The primary aim for the source is to provide UCN for a new precision search for a neutron electric dipole moment. We aim for an improvement of two orders of magnitude over the current best limit.