[Neutron] ORNL 2015-A neutron scattering proposal call: updated information for the Quantum Condensed Matter instruments at the HFIR

[Aczel, Adam A.]

Dear current and potential users of the HFIR at ORNL:
As the deadline approaches for the next neutron scattering proposal call at ORNL, here are some quick updates about the Quantum Condensed Matter instrument suite at the High Flux Isotope Reactor (HFIR):

1. IPTS is now open to accept proposals for cycle 2015-A, with an Oct. 15th deadline at noon:  http://www.ornl.gov/sci/iums/ipts/

2. The Quantum Condensed Matter HFIR instrument suite includes:


(i)                  HB-1A: fixed incident energy thermal triple axis spectrometer. Excellent signal-to-noise ratio and large Q-coverage make this instrument ideal for magnetic diffraction studies of small single crystals (mass > 5 mg) and thin films at a variety of different temperatures (0.03 K - 1800 K), magnetic fields (0 - 8 T), and applied pressures.  For more information, please contact Wei Tian (tianwn at ornl.gov<mailto:tianwn at ornl.gov>) or Adam Aczel (aczelaa at ornl.gov<mailto:aczelaa at ornl.gov>).


(ii)                HB-1: polarized thermal triple axis spectrometer. This instrument is specifically designed for polarized beam measurements, but also highly efficient for general purpose unpolarized neutron scattering experiments. These measurements can be done at a variety of different temperatures (0.03 K - 1800 K) and magnetic fields (0 - 8 T). For more information, please contact Masaaki Matsuda (matsudam at ornl.gov<mailto:matsudam at ornl.gov>).


(iii)               HB-2A: neutron powder diffractometer. This instrument is used for crystal and magnetic structure studies of powder and ceramic samples at a variety of different temperatures (0.03 K - 1800 K), magnetic fields (0 - 8 T), and applied pressures. For more information, please contact Clarina de la Cruz (delacruzcr at ornl.gov<mailto:delacruzcr at ornl.gov>) or Stuart Calder (caldersa at ornl.gov<mailto:caldersa at ornl.gov>).


(iv)              HB-2C: wide-angle neutron diffractometer. This instrument is used for fast measurements of medium-resolution powder diffraction patterns and measurements of diffuse scattering in single crystals using flat-cone geometry. These measurements can be done at a variety of different temperatures (0.3 K - 1800 K) and magnetic fields (0 - 5 T). This instrument is available on a limited basis for this proposal call. For more information, please contact Jaime Fernandez-Baca (fernandezbja at ornl.gov<mailto:fernandezbja at ornl.gov>) or Songxue Chi (chis at ornl.gov<mailto:chis at ornl.gov>).


(v)                HB-3: general purpose thermal triple axis spectrometer. This instrument is our most intense triple axis spectrometer and is designed for inelastic measurements on single crystals over a wide range of energy and momentum transfers. These measurements can be done at a variety of different temperatures (0.03 K - 1800 K) and magnetic fields (0 - 6 T). For more information, please contact Songxue Chi (chis at ornl.gov<mailto:chis at ornl.gov>).


(vi)              HB-3A: four-circle single crystal diffractometer. This instrument is used for single crystal diffraction measurements (both structural and magnetic) over a temperature range 4 - 450 K. Additional sample environment options include high pressures up to 2 GPa, electric fields (voltages up to 300 V), and magnetic fields up to 1 T. For more information, please contact Huibo Cao (caoh at ornl.gov<mailto:caoh at ornl.gov>) or Bryan Chakoumakos (chakoumakobc at ornl.gov<mailto:chakoumakobc at ornl.gov>).


(vii)             CG-4C: cold triple axis spectrometer. This instrument is designed for inelastic measurements on single crystals, where low energy transfers between 0 - 5 meV are necessary. These measurements can be done at a variety of different temperatures (0.03 K - 1800 K) and magnetic fields (0 - 11 T). Commissioning of a new horizontally-focusing analyzer with fixed vertical focusing is currently underway. This upgrade should be available for the 2015-A beam period and significantly increase the number of scattered neutrons reaching the detector. For more information, please contact Tao Hong (hongt at ornl.gov<mailto:hongt at ornl.gov>) or Adam Aczel (aczelaa at ornl.gov<mailto:aczelaa at ornl.gov>).

More details for all of these instruments can be found at the following link:
http://neutrons.ornl.gov/instruments/HFIR/

We look forward to receiving your neutron proposals this fall, before the Oct. 15 deadline.

Regards,
The Quantum Condensed Matter Instrument Team at the HFIR
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