Proposal Calls

The General User Proposal Call 2022-A closed on Wednesday, September 22, 2021. Proposals awarded beam time will be scheduled to run January - June 2022. Instrument-specific detail and applicable restrictions for 2022-A are posted below.

Remote instrument control capabilities are available for some experiments and can be requested in proposal submission. Proposals will be reviewed for feasibility, safety, and potential for high impact science. Proposal teams will be notified of the results by November 17.

Update (9/21/2021): The Spallation Neutron Source (SNS) and the High Flux Isotope Reactor (HFIR) have now received permission to begin allowing onsite access to vaccinated users.

Submission deadline for General User Proposal Call 2022-B will be Wednesday, March 23, 2022.

SNS Instruments

Beamline

Conditions that CAN be supported

Conditions that CANNOT be supported

BL-1A USANS

Only standard cells without temperature control or Peltier cell with moderate temperature control. No other sample environments can be supported.

 

BL-1B NOMAD

Standard NOMAD sample environments (Shifter, cryostat, furnace). Number of manual sample changes per day is limited, contact the instrument team to discuss. Regular mail-in proposals will be supported.

Experiments needing gas flow (utube), in situ battery capabilities, levitator experiments

BL-2 BASIS

Standard BASIS sample environment equipment: closed cycle refrigerators or furnaces. Discuss complex or time-sensitive sample preparation with the instrument team in advance.

Non-standard BASIS sample environments including cryomagnets, orange cryostats, low temperature inserts, or pressure cells.

BL-3 SNAP

Surveys of pressure and temperature, on good scattering samples. Proof of principle feasibility studies for more challenging problems.

Experiments where the signal is expected to be weak or that require expert sample processing or alignment (e.g. single crystal measurements on DAC’s or Paris Edinburgh-Press). Prior discussions with beamline staff is highly recommended to discuss the feasibility of experiments that require frequent monitoring of experimental parameters (e.g. gas above 3 KBar, or DAC experiments that requiring frequent gasket and ruby fluorescence pressure monitoring)

BL-4A MAGREF

Closed cycle refrigerators, electromagnet (-1.15T - + 1.15T), cryomagnet up to 5T, 1.5 – 850K. Polarization analysis using the IPNS analyzer. Combination of various techniques (i.e. reflectometry, GISANS, WAD) and User provided equipment should be discussed with the instrument team case by case in advance.

Experiments requiring frequent sample changes, extreme temperature ranges (requiring close monitoring of experiment), complex sample preparation, and customized sample environments. Experiments that involve complex setups requiring frequent monitoring by SNS staff.

BL-4B LIQREF

Solid samples deposited onto 50mm diameter, 5 mm thick substrates. Proposals calling for the use of fluid or electrochemical cells must be discussed with the instrument team in advance.

Experiments involving free liquid surfaces or vacuum environments will generally not be supported (users can contact the instrument team to determine exceptions). User supplied sample environment.

BL-5 CNCS

Closed cycle refrigerators, orange cryostats, 3He inserts, cryomagnets, furnaces. Single crystal samples should be aligned in advance; for questions related to crystal alignment, contact the instrument team.

Operational capacity concerns may limit use of dilution refrigerator inserts. Discuss the use of pressure cells and levitators with the instrument team in advance.

BL-6 EQ-SANS

Stable fully prepared samples that can be run with either banjo cells or ti-demountable cells between 5C and 130C.

 

BL-7 VULCAN

Required: contact the instrument team to discuss experiment before submitting. Use of the load frame may be requested but for safety reasons, the load frame must be remotely controlled by our staff, so acceptance of proposals may be limited by staff time availability.

Frequent sample changes (i.e. many samples in one proposal), extreme temperature ranges (requiring close monitoring of experiment), complex sample preparation, and customized sample environments.

BL-9 CORELLI

Closed cycle refrigerators, orange cryostats, 3He inserts, Dilution refrigerator inserts, cryomagnets (5 Tesla), furnaces.

Frequent sample changes (i.e., many samples in one proposal). High-pressure cell. Combination of various techniques should be discussed with the instrument team in advance.

BL-11A POWGEN

Standard POWGEN sample environments (PAC, OC, JANIS, MICAS, AGES). Please discuss the use of AGES with the instrument team in advance. Number of manual sample changes per day is limited, contact the instrument team. For Regular mail-in proposals will be supported.

Slim Sam Magnet.

BL-11B MaNDi

Experiments for which protein crystals can be shipped, or protein sample can be shipped to ORNL for crystal growth, or protein can be deuterated and crystals grown on site.

 

BL-12 TOPAZ

Experiments using the ambient goniometer in the temperature range 90 K – 450 K, and cryogenic goniometer in the temperature range 5 K – 300 K.

User provided equipment; Experiments that involve complex setups requiring frequent monitoring by SNS staff.

BL-14B HYSPEC

Closed cycle refrigerators, orange cryostats, 3He inserts, cryomagnets, furnaces. Single crystal samples should be aligned in advance; for questions related to crystal alignment, contact the instrument team.

Operational capacity concerns may limit use of dilution refrigerator inserts. Discuss the use of pressure cells with the instrument team in advance

BL-15 NSE

Samples must be prepared at user's own institution and stable enough to be mailed to SNS. IS and SA can occasionally help with sample preparation, if materials and protocols for preparation are provided. Discuss complex or sensitive sample preparation with the instrument team in advance.

Experiments requiring wavelength > 11A (Fourier time > 130ns )

BL-16B VISION

Standard VISION closed cycle refrigerator including basic gas loading involving small amounts of gas or liquid. Experiments using diamond anvil or clamp pressure cells.

Experiments requiring use of furnaces or user supplied equipment. Experiments that involve complex setups requiring frequent monitoring by SNS staff. For gas pressure experiments, consult with instrument staff before submitting proposal.

BL-17 SEQUOIA

Closed cycle refrigerators, orange cryostats, 3He inserts, cryomagnets, furnaces, dilution refrigerator inserts. Single crystal samples should be aligned in advance; for questions related to crystal alignment, contact the instrument team.

Operational capacity concerns may limit use of dilution refrigerator inserts. Discuss the use of pressure cells with the instrument team in advance

BL-18 ARCS

Closed cycle refrigerators, orange cryostats, 3He inserts, cryomagnets, furnaces. Single crystal samples should be aligned in advance; for questions related to crystal alignment, contact the instrument team.

Discuss the use of pressure cells with the instrument team in advance.

 

HFIR Instruments

 

Beamline

Experiment Conditions that CAN be supported

Experiment Conditions that CANNOT be supported

CG-1D Imaging

Radiography and tomography that do not require frequent sample change or constant onsite monitoring.

Measurement that requires frequent sample change. Very complex sample environment.

CG-2 GP-SANS

Samples in standard sample cells used at CG-2 (such as banjo cells); single crystal samples should be aligned at user institution; standard sample environments including magnets, furnaces, tumbler, Peltier and ambient sample changers are all available

EQ-SANS furnace, rheometers, pressure cells, cryostat and user-supplied equipment

CG-3 Bio-SANS

Samples that can be run in standard sample environments - banjo and rectangular cell sample changer, Peltier stage, Ti cell sample changer, tumbler

Pressure cell, user supplied equipment

CG-4C C-TAX

Closed cycle refrigerators, orange cryostats, 3He inserts, cryomagnets, furnaces, and limited availability for dilution refrigerator inserts. Samples must run for a minimum of two days. Single crystal samples should be aligned in advance. If this is not possible, the instrument team can align single crystal samples (one piece) if one direction is already known.

Experiments requiring daily sample changes, pressure cells, or single crystal alignments where no orientation information is known in advance or co-alignment of several pieces is required.

CG-4D IMAGINE

Experiments for which protein crystals can be shipped, or protein sample can be shipped to ORNL for crystal growth, or protein can be deuterated and crystals grown on site.

 

HB-1 PTAX

Closed cycle refrigerators, orange cryostats, 3He inserts, cryomagnets, furnaces, and limited availability for dilution refrigerator inserts. Samples must run for a minimum of two days. Single crystal samples should be aligned in advance. If this is not possible, the instrument team can align single crystal samples (one piece) if one direction is already known.

Experiments requiring daily sample changes, pressure cells, or single crystal alignments where no orientation information is known in advance or co-alignment of several pieces is required.

HB-1A FIE-TAX

Closed cycle refrigerators, orange cryostats, 3He inserts, cryomagnets, furnaces, and limited availability for dilution refrigerator inserts. Samples must run for a minimum of two days. Single crystal samples should be aligned in advance. If this is not possible, the instrument team can align single crystal samples (one piece) if one direction is already known.

Experiments requiring daily sample changes, pressure cells, or single crystal alignments where no orientation information is known in advance or co-alignment of several pieces is required.

HB-2A Powder

Standard HB-2A sample environments. Proposals with non-standard set-ups or multiple samples should contact the instrument team.

 

HB-2B HIDRA

Mapping experiments typical of HIDRA can be accommodated; acceptance of proposals may be limited due to staff time.

 

HB-2C WAND2

Standard HB-2C sample environments. The number of manual sample changes per day is limited, contact the instrument team. Single crystals should be aligned on sample holder. The use of complex sample environment (Dil-fridge, pressure cell) should be discussed with the instrument team before submitting a proposal.

 

HB-3 TAX

Closed cycle refrigerators, orange cryostats, 3He inserts, cryomagnets, furnaces, and limited availability for dilution refrigerator inserts. Samples must run for a minimum of two days. Single crystal samples should be aligned in advance. If this is not possible, the instrument team can align single crystal samples (one piece) if one direction is already known.

Experiments requiring daily sample changes, pressure cells, or single crystal alignments where no orientation information is known in advance or co-alignment of several pieces is required.

HB-3A DEMAND

Non-aligned crystals: Closed cycle refrigerators (4-700 K);

Aligned crystals: Orange cryostats (1.5 K- 300 K), 3He inserts (T >300 mK), dilution fridge (T >50 mK), Cryomagnets (H < 6 T).

For pressure experiments, half-polarized neutron diffraction experiments, and other customized experiments, please discuss with the instrument team before submitting proposals.

 

 

Option to request Experiment with Remote Control of Instrument: Remote experiment capabilities are being implemented at SNS and HFIR which enable users to conduct experiments and produce data through remote control of the instrument. This mode is distinct from our current mode of operation in which the instrument team runs the experiment with input and directions from the user. Proposals that are accepted to run through remote control of the instrument will require additional pre-experiment steps for users, including filling out sample container and loading information and watching training videos to learn about the instrument workspace and controls. Users may express interest in this option when submitting a proposal to the 2022-A proposal call. A yes/no option has been added to IPTS on the instrument selection page which states, “I am interested in running my experiment through remote control of the instrument.” Final determination of proposals to be awarded remote experiment status will be made by ORNL staff, and users will be notified of this status in their proposal award letter.