Comparison of specularly-reflecting mirrors for GRANIT

V.V. Nesvizhevsky; G. Pignol; K.V. Protasov; G. Quéméner; D. Forest; P. Ganau; J.M. Mackowski; C. Michel; J.L. Montorio; N. Morgado; L. Pinard; A. Remillieux

HAL : in2p3-00153118, version 1

DOI : 10.1016/j.nima.2007.05.319

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Nuclear Instruments and Methods in Physics Research Research: Accelerators, Spectrometers, Detectors and Associated Equipment A578 (2007) 435-438

Comparison of specularly-reflecting mirrors for GRANIT

V.V. Nesvizhevsky¹, G. Pignol², K.V. Protasov², G. Quéméner², D. Forest³, P. Ganau³, J.M. Mackowski³, C. Michel³, J.L. Montorio³, N. Morgado³, L. Pinard³, A. Remillieux³

GRANIT Collaboration(s)

(2007)

The specularity of ultracold neutron reflection was compared for different “promising” surfaces, including sapphire, silica, silica with carbon (diamond-like), and copper coatings with very small roughness. The probability of total losses of ultracold neutrons (UCN) from a specular trajectory was dominated by diffusive (non-specular) elastic scattering of UCN. In all the cases considered the quality of reflection was sufficiently high for storage of UCN at specular trajectories for the first stage of GRANIT experiment.

1 :	ILL - Institut Laue-Langevin

2 :	LPSC - Laboratoire de Physique Subatomique et de Cosmologie

3 :	LMA - Laboratoire des matériaux avancés

Thème(s)

Physique/Physique/Instrumentations et Détecteurs

Mot(s)-clé(s) : Ultracold neutrons – Specular reflection – Coatings


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Contributeur : Dominique Girod <>
Soumis le : Vendredi 8 Juin 2007, 13:15:22
Dernière modification le : Mercredi 21 Novembre 2007, 09:49:45