Extracting source parameters from beam monitors on a chopper spectrometer
نویسندگان
چکیده
منابع مشابه
Atomic pair distribution function analysis from the ARCS chopper spectrometer at the Spallation Neutron Source
Neutron powder diffraction based atomic pair distribution functions (PDFs) are reported from the new wide angular-range chopper spectrometer ARCS at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL). The spectrometer was run in white-beam mode with no Fermi chopper. The PDF patterns of Ni and Al2O3 were refined using the PDFfit method and the results compared to data c...
متن کاملQuantitative structure refinement from the ARCS chopper spectrometer
The new wide angular-range chopper spectrometer ARCS at the Spallation Neutron Source at Oak Ridge National Laboratory has been successfully used in whitebeam mode, with no Fermi chopper, to obtain neutron powder diffraction based atomic pair distribution functions (PDFs). Obtained PDF patterns of Si, Ni, and Al2O3 were refined using the PDFfit method and the results compared to data collected ...
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Using a quadratic saddle-point approximation, we show how information about a particle-emitting source can be extracted from gaussian fits to twoparticle correlation data. Although the formalism is completely general, extraction of the relevant parameters is much simpler for sources within an interesting class of azimuthally symmetric models. After discussing the standard fitting procedure, we ...
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The Centro Nazionale di Adroterapia Oncologica (CNAO) located in Pavia, Italy, will be the first Italian facility for hadrontherapy of deeply sited tumours [1]. The accelerator consists of a RFQ and of an IH-type drift tube linac, both delivered by GSI [2], followed by a synchrotron built by CNAO. In the low energy beam line (LEBT), an electrostatic chopper horizontally deflects the DC ion sour...
متن کاملDesign and operation of the wide angular-range chopper spectrometer ARCS at the Spallation Neutron Source.
The wide angular-range chopper spectrometer ARCS at the Spallation Neutron Source (SNS) is optimized to provide a high neutron flux at the sample position with a large solid angle of detector coverage. The instrument incorporates modern neutron instrumentation, such as an elliptically focused neutron guide, high speed magnetic bearing choppers, and a massive array of (3)He linear position sensi...
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ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2015
ISSN: 2100-014X
DOI: 10.1051/epjconf/20158303001