The General User Proposal Call 2021-A will close at Noon (EDT) on September 16. Proposals awarded beam time will be scheduled to run January - June 2021. In this proposal call, we are soliciting only proposals that can be run with remote participation. This call is strictly limited to experiments for which samples will be available during the award period (no postponements due to sample unavailability will be allowed). Each participating instrument has provided a list of experiment conditions that can be supported in remote access mode. In addition to reviewing the limitations listed below, proposers are highly encouraged to consult with the instrument team on their experiment plan.
Due to experiment carryover and COVID-19 research, the following instruments will not be available in the 2021-A call: BL-4A MAGREF, BL-4B LIQREF, and CG-3 Bio-SANS.
Previously awarded proposals that cannot run in remote access mode will still be honored when the onsite GUP resumes. All awarded users should be aware that we anticipate more frequent schedule changes during this cycle than usual, to deal with unscheduled unavailability of staff or other support.
SNS Instruments:
| Beamline | Experiment Conditions that CAN be supported | Experiment 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 | A survey of a sample at pressure and room temperature, or a coarse scan over pressure and temperature ranges. | Experiments that require frequent monitoring of experimental parameters: gas above 3 KBar, some DAC experiments requiring frequent gasket and pressure monitoring (fluorescence); 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). |
| BL-4A MAGREF | N/A (not available for 2021-A call) | N/A (not available for 2021-A call) |
| BL-4B LIQREF | N/A (not available for 2021-A call) | N/A (not available for 2021-A call) |
| 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. | Experiments requiring the use of dilution refrigerator inserts and levitators. Discuss the use of pressure cells with the instrument team in advance. |
| BL-6 EQ-SANS | Stable fully prepared samples that can be run with standard sample environment (banjo cells, ti-demountable cells) using moderate temperature range. | |
| 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, cryomagnets, furnaces. | Experiments requiring the use of dilution refrigerator inserts or 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). Number of manualsample changes per day is limited, contact the instrument team. Regular mail-in proposals will be supported. | Experiments using the AGES system |
| 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 temperature range 90 K - 450 K. | User provided equipment; experiments that involve complex setups requiring frequent monitoring. |
| 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. | Experiments requiring the 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. | |
| 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 user supplied equipment, high pressure gas cells, or furnaces. Experiments that involve complex setups requiring frequent monitoring. |
| BL-17 SEQUOIA | 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. | Experiments requiring the 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. | Experiments requiring the use of dilution refrigerator inserts or levitators. 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 | CT scans, 2D radiography with NO complex setup. Potentiostat for battery cycling may be supported on a case by case basis. | Sample environments such as CCR and furnaces |
| 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, extended Q pressure cells with standard stock gasses. | EQ-SANS furnace, rheometers, dilution fridge, and user-supplied equipment |
| CG-3 Bio-SANS | N/A (not available for 2021-A call) | N/A (not available for 2021-A call) |
| CG-4C C-TAX | 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. | Experiments requiring more than two scattering plane measurements, multiple changes of samples, or complex single crystal alignment. Experiments requiring the use of dilution refrigerator inserts or pressure cells. |
| 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. Single crystal samples should be aligned in advance; for questions related to crystal alignment, contact the instrument team. | Experiments requiring more than two scattering plane measurements, multiple changes of samples, or complex single crystal alignment. Experiments requiring the use of dilution refrigerator inserts or pressure cells. |
| HB-1A FIE-TAX | 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. | Experiments requiring daily sample changes or complex single crystal alignment. Experiments requiring the use of dilution refrigerator inserts or pressure cells. |
| HB-2A Powder | Standard HB-2A sample environments. Proposals with non-standard set-ups or multiple samples should be discussed with the instrument team before submission. | Experiments requiring the use of dilution refrigerator inserts or pressure cells. |
| 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. | |
| HB-3 TAX | 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. | Experiments requiring more than two scattering plane measurements, multiple changes of samples, or complex single crystal alignment. Experiments requiring the use of dilution refrigerator inserts or pressure cells. |
| HB-3A DEMAND | CCR experiments only with one sample per proposal. Limited availability due to high carryover. |
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