[Neutron] ORNL 2016-B neutron scattering proposal call: updated information for the Quantum Condensed Matter instruments at the HFIR

[Aczel, Adam A.]

Dear Quantum Condensed Matter 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 relevant instruments for quantum condensed matter science at the High Flux Isotope Reactor (HFIR):
1. The QCMD sponsored workshop on Magnetic Structure Determination from Neutron Diffraction is still accepting applicants. Please go to https://conference.sns.gov/event/22/ for more details.
2. IPTS is now open to accept proposals for cycle 2016-B, with an April 13th deadline at noon:  http://www.ornl.gov/sci/iums/ipts/
3. Instruments used for quantum condensed matter science at HFIR include:
(i) HB-1A: fixed incident energy thermal triple axis spectrometer. Excellent signal-to-noise ratio and large Q-coverage makes 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>) or Daniel Pajerowski (pajerowskidm at ornl.gov<mailto:pajerowskidm 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 - 6 T), and applied pressures up to 2 GPa. 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 (WAND). This instrument is used for measurements of medium-resolution powder diffraction patterns. Its high flux allows fast data sampling and makes it useful in studies of kinetics in phase transitions. Additionally, the 1-dimensional linear position sensitive detector allows the mapping of reciprocal space, making WAND useful to search for fundamental magnetic propagation vectors or measurements of diffuse scattering in single crystals. These measurements can be done at a variety of different temperatures (0.3 K - 1800 K), magnetic fields (0 - 5 T) and pressures up to 2 GPa. For more information, please contact Matthias Frontzek (frontzekmd at ornl.gov<mailto:frontzekmd 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 - 8 T). For more information, please contact Songxue Chi (chis at ornl.gov<mailto:chis at ornl.gov>) or Daniel Pajerowski (pajerowskidm at ornl.gov<mailto:pajerowskidm at ornl.gov>).
(vi) HB-3A: four-circle single crystal diffractometer. This instrument is equipped with a two-dimensional area detector. It is used for single crystal diffraction measurements (both structural and magnetic) over a temperature range 4 - 800 K. Additional sample environment options include high pressures up to 2 GPa, electric fields (voltages up to 1100 V), and magnetic fields up to 1 T. For more information, please contact Huibo Cao (caoh at ornl.gov<mailto:caoh at ornl.gov>), Matthias Frontzek (frontzekmd at ornl.gov<mailto:frontzekmd 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 -2 to 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). The instrument analyzer has fixed vertical focusing, while the geometry in the horizontal direction can be either flat or focused. This option allows one to have the flexibility of sacrificing Q-resolution for additional intensity. 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>).
(viii) GP-SANS: general-purpose small angle neutron scattering diffractometer. This instrument is used to probe magnetic structures on the order of 0.5 nm to 200 nm length scales (q = 0.0007 to ~ 1 Å).  These measurements can be done at a variety of different temperatures (0.03 K - 1300 K) and magnetic fields. Vertical fields up to 8 T can be applied, while the new 11 T horizontal field magnet will be commissioned in June 2016. Barring any issues that arise during commissioning, this new magnet will also be available for the general user program. For more information, please contact Lisa DeBeer-Schmitt (debeerschmlm at ornl.gov<mailto:debeerschmlm at ornl.gov>).

More details for all of these instruments can be found at the following link:
http://neutrons.ornl.gov/instruments/
We look forward to receiving your neutron proposals this spring, before the April 13th deadline.

Regards,
Your instrument team at the HFIR for quantum condensed matter science

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