Production of ultracold neutrons from cryogenic 2H2, O2, and C2H4 converters

F. Atchison, B. Blau, K. Bodek, B. Van Den Brandt, T. Bryś, M. Daum, P. Fierlinger, P. Geltenbort, P. Hautle, R. Henneck, S. Heule, A. Holley, M. Kasprzak, K. Kirch, A. Knecht, J. A. Konter, M. Kuźniak, C. Y. Liu, A. Pichlmaier, C. PlonkaY. Pokotilovski, A. Saunders, D. Tortorella, M. Wohlmuther, A. R. Young, J. Zejma, G. Zsigmond

Research output: Contribution to journalArticlepeer-review


Ultracold neutrons (UCN) have been produced using the cold neutron (CN) beam FUNSPIN at SINQ on cryogenic oxygen (O2), tetradeuteromethane (C2H4), and deuterium (2H2) targets. The target cell (40 mm long, fiducial volume about 45 cm3) was operated between room temperature and 8 K and UCN were produced from gaseous, liquid and solid targets. UCN rates have been measured as a convolution of UCN production and transport out of the target and to the detector. At least within the accessible temperature range of this experiment, deuterium outperforms the other materials.

Original languageEnglish (US)
Article number12001
Issue number1
StatePublished - Jul 2011
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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