Neutron physical properties of a multiblade neutron velocity selector

✍ Scribed by L Rosta; J Füzi; L Hományi

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 353 KB
• Volume: 350
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2004.03.190

✦ Synopsis

The prototype of a mechanical velocity selector for neutron beam monochromatization Physica B 174 (1991) 562; Nucl. Instrum. Methods A 321 (1992) 275 in the 0.2-2.5 nm wavelength range has been realized. The theoretical background of the multiblade rotor system is presented, together with a geometry optimization procedure. The output wavelength and resolution with respect to rotation speed and horizontal tilt angle are computed as well as measured. Measurements are performed on a cold neutron beam at the Budapest Neutron Centre, using a 2D position-sensitive detector in time-of-flight regime. Thus, the effects of the incoming beam divergence are also evaluated.