scholarly journals CG2 general-purpose high-flux SANS instrument at HFIR at Oak Ridge National Laboratory

2008 ◽  
Vol 64 (a1) ◽  
pp. C188-C188
Author(s):  
K.C. Littrell ◽  
W.T. Heller ◽  
V.S. Urban ◽  
G.W. Lynn ◽  
K.M. Atchley ◽  
...  
2014 ◽  
Vol 47 (4) ◽  
pp. 1238-1246 ◽  
Author(s):  
William T. Heller ◽  
Volker S. Urban ◽  
Gary W. Lynn ◽  
Kevin L. Weiss ◽  
Hugh M. O'Neill ◽  
...  

Small-angle neutron scattering (SANS) is a powerful tool for characterizing complex disordered materials, including biological materials. The Bio-SANS instrument of the High Flux Isotope Reactor of Oak Ridge National Laboratory (ORNL) is a high-flux low-background SANS instrument that is, uniquely among SANS instruments, dedicated to serving the needs of the structural biology and biomaterials communities as an open-access user facility. Here, the technical specifications and performance of the Bio-SANS are presented. Sample environments developed to address the needs of the user program of the instrument are also presented. Further, the isotopic labeling and sample preparation capabilities available in the Bio-Deuteration Laboratory for users of the Bio-SANS and other neutron scattering instruments at ORNL are described. Finally, a brief survey of research performed using the Bio-SANS is presented, which demonstrates the breadth of the research that the instrument's user community engages in.


2015 ◽  
Vol 69 ◽  
pp. 104-108 ◽  
Author(s):  
Lou Santodonato ◽  
Hassina Bilheux ◽  
Barton Bailey ◽  
Jean Bilheux ◽  
Phong Nguyen ◽  
...  

2018 ◽  
Vol 51 (2) ◽  
pp. 242-248 ◽  
Author(s):  
William T. Heller ◽  
Matthew Cuneo ◽  
Lisa Debeer-Schmitt ◽  
Changwoo Do ◽  
Lilin He ◽  
...  

Oak Ridge National Laboratory is home to the High Flux Isotope Reactor (HFIR), a high-flux research reactor, and the Spallation Neutron Source (SNS), the world's most intense source of pulsed neutron beams. The unique co-localization of these two sources provided an opportunity to develop a suite of complementary small-angle neutron scattering instruments for studies of large-scale structures: the GP-SANS and Bio-SANS instruments at the HFIR and the EQ-SANS and TOF-USANS instruments at the SNS. This article provides an overview of the capabilities of the suite of instruments, with specific emphasis on how they complement each other. A description of the plans for future developments including greater integration of the suite into a single point of entry for neutron scattering studies of large-scale structures is also provided.


Author(s):  
Gustavo A. Aramayo

The support assembly of the Oak Ridge National Laboratory High Flux Isotope Reactor (HFIR) was modeled to determine the assembly’s response to a seismic excitation. The compliance of this structural component to established U. S. Department of Energy (USDOE) standards [1, 2] is evaluated.


2017 ◽  
Vol 88 (9) ◽  
pp. 095103 ◽  
Author(s):  
I. Dhiman ◽  
Ralf Ziesche ◽  
Tianhao Wang ◽  
Hassina Bilheux ◽  
Lou Santodonato ◽  
...  

2019 ◽  
Vol 219 ◽  
pp. 07002
Author(s):  
L.J. Broussard ◽  
K.M. Bailey ◽  
W.B. Bailey ◽  
J.L. Barrow ◽  
K. Berry ◽  
...  

The possibility of relatively fast neutron oscillations into a mirror neutron state is not excluded experimentally when a mirror magnetic field is considered. Direct searches for the disappearance of neutrons into mirror neutrons in a controlled magnetic field have previously been performed using ultracold neutrons, with some anomalous results reported. We describe a technique using cold neutrons to perform a disappearance and regeneration search, which would allow us to unambiguously identify a possible oscillation signal. An experiment using the existing General Purpose-Small Angle Neutron Scattering instrument at the High Flux Isotope Reactor at Oak Ridge National Laboratory will have the sensitivity to fully explore the parameter space of prior ultracold neutron searches and confirm or refute previous claims of observation. This instrument can also conclusively test the validity of recently suggested oscillation-based explanations for the neutron lifetime anomaly.


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