Triple-Axis Spectrometer
TAX | HB-3 | HFIR
Shipping address for samples:
Please visit the ORNL User Facilities Sample Handling and Shipping page for the correct address https://neutrons.ornl.gov/users/shipping-guide.
Access to HB-3 data:
All data can be accessed through ONCat or the analysis cluster.
Sample Environments:
HB-3 can accommodate a wide variety of sample environments. For more information, please visit the following page: https://neutrons.ornl.gov/sample/subpage/equipment.
Scheduling of your experiment:
Once you are notified of an approved proposal, please update your impossible dates in IPTS as soon as possible to ensure that they are accommodated in our instrument schedule. Note that there will be limited scheduling flexibility for experiments requiring sample environments other than closed cycle refrigerators.
Neutron alignment station (CG-1B):
If you need to align a single crystal with neutrons before your HB-3 experiment begins, please email the HB-3 instrument team well in advance so alignment time can be reserved for you on CG-1B. Note that we have a first come, first served scheduling system for this instrument. If you need a quick introduction to single-crystal alignment using SPICE, here is a helpful link.
Links Related to Neutron Scattering and Crystallography:
a. Neutron scattering lengths and cross sections (http://www.ncnr.nist.gov/resources/n-lengths/index.html)
b. Calculate absorption, basic activation calculation (http://www.ncnr.nist.gov/resources/activation/)
c. Inorganic Crystallographic Structure Database (ICSD) (https://icsd.fiz-karlsruhe.de/search/basic.xhtml)
Experiment planning:
Several widely used software packages are available to help users simulate spectrometer geometry, plan scan trajectories, and evaluate resolution. Useful tools include DAVE, Takin, and vTAS, and links to these programs are provided below for your convenience:
DAVE: https://www.ncnr.nist.gov/dave/. ScanMapper is embedded in DAVE and can be found under TAS Tools in the Planning section. Here is a link to its quick start guidance.
Takin: https://github.com/ILLGrenoble/takin
vTAS: https://www.ill.eu/for-ill-users/support-infrastructures/software-scientific-tools/vtas
User publications:
a. As a condition for performing nonproprietary research, the US Department of Energy requires users to publish results from their research. Authorship of publications based on research from these facilities should reflect the normal considerations of recognizing collaborations. It is also important to take into account the considerable efforts of the instrument scientists in their role of designing, constructing, and/or operating the instrument and related facilities. Results are typically published in peer-reviewed journals, proceedings, or presentations at technical conferences. Proprietary users are not required to publish.
b. Credit line: The HB-3 Triple Axis Spectrometer should be acknowledged with this required statement:
"This research [or, A portion of this research] used resources at the High Flux Isotope Reactor [and/or Spallation Neutron Source, as appropriate], a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. [If applicable: The beam time was allocated to [Instrument] on proposal number IPTS-XXXXX.X.]"
c. Publication Record: Please submit publications, thesis, patents, etc., to PuSH (Publications of SNS and HFIR) to assist us in recording your contribution. Both the credit statement and links to PuSH are on the Neutron Sciences Publications website.
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