[Neutron] New polarized cold-beam reflectometer beamline at the Budapest Neutron Centre - call for proposals

[Bottyán László]

GINA, the "Grazing Incidence Neutron Apparatus" has been recently 
installed on a cold-neutron guide in the Budapest Neutron Centre. GINA is 
dedicated to studies of magnetic films and heterostructures, but 
unpolarized options for non-magnetic films, membranes, and other surfaces 
are also provided.

GINA is a dance-floor-type, constant-energy, angle-dispersive 
reflectometer equipped with a 2D position-sensitive detector to study 
specular and off-specular scattering.

Wavelength options between 3.2 and 5.7 angstrom are available for 
unpolarized and polarized neutrons. The beam is vertically focused by a 
five-element double layer pyrolytic graphite monochromator. Spin 
polarization and analysis are achieved by magnetized transmission 
supermirrors and radio-frequency adiabatic spin flippers, respectively.

The setup, capabilities, and operation parameters of the GINA neutron 
reflectometer have been recently reported in detail in the Rev. Sci. 
Instrum. 84, 015112 (2013) 
(http://rsi.aip.org/resource/1/rsinak/v84/i1/p015112_s1) and can also be 
found on the web pages of the instrument (http://mffo.rmki.kfki.hu/gina).

The GINA reflectometer is operated by the Functional Nanostructures 
Research Group (http://mffo.rmki.kfki.hu/nucssp_new) of the Wigner 
Reaearch Centre for Physics (http://www.kfki.hu/?language=en) and the 
group also offers thin film preparation services by their molecular beam 
epitaxy (MBE) laboratory including, beside many other metals, 
isotope-selective depositions of Fe (natural and Fe-57) and Ni (natural 
and Ni-62). A complete list of available targets is available at 
http://mffo.rmki.kfki.hu/MBE.

The GINA reflectometer is part of the User Program of the Budapest neutron 
Centre (BNC) (http://www.bnc.hu). The next proposal deadline is extended 
to 1 June, 2013 (for experiments in the reactor cycles August-December). 
Should you be interested in performing experiments on the GINA 
reflectometer, please contact: László Bottyán (bottyan at bnc.hu) or please 
apply for beamtime via the BNC proposal submission procedure.

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   László Bottyán	Wigner Research Center for Physics
      head of 		Laboratory of Functional Nanostructures
    laboratory		Konkoly Thege Miklós út 29-33.
 			1525 Budapest, pf. 49
 			Phone: +361 392 2761  Fax:+361 395 9151
 			Mobile: +3630 256 9853
 			e-mail: bottyan.laszlo at wigner.mta.hu
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