- 3He polarizer used on SESAME for the first time 16 Sept., 2012: Over the past several years, Mike Snow’s group has been developing 3He-based neutron polarizers in collaboration with researches at NIST and Hamilton College. One of their most recent activities has been the development of a system that can optically pump and maintain the necessary 3He polarization in-situ on a beam line, and this device was just recently installed on the SESAME instrument at LENS. 3He polarizations of up to 70% have been demonstrated with this configuration, and experiments on nano-porous anodized alumina and silica nanospheres.
- New vertical Device Under Test assembly installed at NREF: March 2012 A new Device Under Test (DUT) holder was installed in TMR1 for the Neutron Radiation Effect Facility (NREF). This new DUT holder allows parts 4 inch by 9 inch by 18 inch to be easily installed without removing major shielding. Also this holder allows the moderating material (up to 2 inches of polyethelene ) to be easily removed facilitating changing from a MeV neutron spectrum to a thermal neutron spectrum. Please see the NREF web site for details
- LENS commissions third beam line: the Moderator Imaging Station. 2 July 2012 Working in collaboration with researchers from the Spallation Neutron Source at Oak Ridge National Lab, researchers at LENS recently installed a new instrument on NBL3 on the LENS cold neutron source. This instrument is to be used primarily for imaging test moderators during neutronics experiments, as it provides a slit imaging system which can provide information on the positional or angular dependence of the moderator spectrum). This is initially being employed for studies of the novel convoluted moderator concept. It is anticipated that in the future the instrument will also be used for pin-hole imaging of moderators and for the evaluation of novel neutron detector technologies.
- aCORN experiment installed at NIST starting in December 2009 An experiment to measure small asymmetries in neutron beta decay (the so-called “little-a” parameter) started collecting data at the NIST Center for Neutron Research in February 2013. Initial construction and testing of the main magnetic field components of this experiment, which involves measuring correlations between the momenta of the proton and electron that result from neutron decay, was carried out at CEEM from 2005 through 2011. Upon completion of these tests, further modifications were made to improve the performance of the silicon detector system and the proton acceleration stage. Testing of the improved system with beam started in the summer of 2012 with full data running in 2013. In addition to this logistical support from CEEM, important information on neutron scattering from the aluminum windows in the detector was obtained through experiments performed on the SANS instrument at LENS.
- LENS group hosts Second Meeting of the Union for Compact Accelerator-driven Neutron Sources (UCANS-II)
July 8, 2011
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IU Physics Facility Awarded $5 Million for Cooperative Neutron Research
August 26, 2010
LENS has received a $5 million grant from the National Institute for Standards and Technology. The NIST grant provides close to $1 million a year for five years to support cooperative research activities between the Low Energy Neutron Source (LENS) at IU Bloomington and NIST's National Center for Neutron Research, located in Gaithersburg, MD.
IU Announces Cooperation Agreement between LENS and Tsinghua University
September 11, 2009
The Office of the Vice President for International Affairs at Indiana University has announced "an Agreement of Friendship and Cooperation between Tsinghua University and Indiana University," starting on July 31, 2009, for two years.
- SESAME measures first neutrons
May 4, 2009
The newest LENS beamline, dubbed SESAME (Spin Echo Scattering Angle Measurement), measured its first neutrons on April 21, 2009.
Completion of LENS
October 27, 2008
The Low Energy Neutron Source (LENS) at IUCF reached two major milestones recently.
- LENS reaches target of 13MeV
The Low Energy Neutron Source at IUCF achieved its ultimate beam operating energy target in the early hours of Monday, March 31 when 13 MeV protons were successfully accelerated through the new Drift Tube Linac section.
- LENS produces first 1kW proton beam
The Low Energy Neutron Source (LENS) program at IUCF reached an important milestone on October 16, 2007, when the LENS source delivered protons to the target at a power level of 1kW for the first time.
- LENS produces first klystron-powered proton beam
December 20, 2006
A klystron-powered proton beam was produced by IUCFs Low Energy Neutron Source (LENS) accelerator for the first time on December 20, 2006.
- LENS Facility Runs for Approximately One Week
March 1, 2006
The LENS facility ran for approximately one week at the end of March.