Dear colleagues, Apologies for cross postings. After a shutdown longer than usual , the SNS proton power upgrade is nearly completed! We are happy to announce that the 2024-B call for General User (GUP) and Collaborative Development (CD) proposals
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Dear colleagues,

 

Apologies for cross postings.

After a shutdown longer than usual , the SNS proton power upgrade is nearly completed!   

We are happy to announce that the 2024-B call for General User (GUP) and Collaborative Development (CD) proposals is now open. Requests for beamtime should be submitted via the proposal system at https://snsapp1.sns.ornl.gov/xprod/f?p=100 by Noon (EDT) on Wednesday February 28th 2024.

To learn more about the submission process, go to http://neutrons.ornl.gov/users/ A template of the statement of research, as well as tips for proposal writing are available at https://neutrons.ornl.gov/users/tips .

The beamtime for approved proposals is anticipated to be scheduled from July - November 2024.  However short proof-of-principle proposals can be entertained, depending on beam and staff availability during beam commissioning days.

As always,  early contact with the instrument team is strongly encouraged when considering a proposal.

 

We welcome long-term development ideas that are suitable for CD proposals. (further details on proposal types can be found on  https://neutrons.ornl.gov/users/proposal-types#prog-prop).

 

The use of high-pressure resources for offline measurements: Raman Scattering, High Pressure Magnetization, Gas adsorption etc. are available via a Facilities Development Proposal. Project Submissions for this type of work can be made at any time.   

 

The SNAP instrument can measure powder and single crystal samples in a variety of pressure devices and temperature ranges. Details on the available standard settings are listed in the table below. User supplied devices and pressure regimes outside the standard range may be considered, as significant improvements on the pressure cells are ongoing. Scientific success in this pressure range is highly dependent on the sample characteristics and the science case, therefore proposals outside the standard range will only be considered if previously discussed with beamline staff.   

 

 

Cell type

Temp. Range

Press. Range

Observations

Paris- Edinburgh VX-5 Low-T

90 K – 350 K

10 GPa

cBN Single-toroidal anvils - Up to 80 mm3

Paris-Edinburgh VX-5 High-T

RT – 1200 C

6 GPa

WC conical anvils - Up to 80 mm3

Paris-Edinburgh VX-3

90 K – 350 K

22 GPa

PCD Double toroidal anvils20 mm3 / Strong diamond peaks from anvils below 2Å.

Clamp cell (CuBe)

4 K -350 K

20 kbar (2 GPa)

Strong peaks from CuBe cell body. Also available with online pressure control

Gas Cell (Al)

10 K -350 K

4.8 kbar (0.48 GPa)

Scattering contribution from cell body (aluminum) can be significantly suppressed with collimation

Gas Cell TiZr

10 K -350 K

1.4 kbar (0.14 GPa)

Null-scattering – no Bragg peaks from cell, but increased background

Diamond Anvil Cell (DAC)*

*-inert gas-loading available

6 K - 350 K

30/40 GPa

30 GPa is available for general samples while 40 GPa might be possible for some systems (contact instrument team). For parameters outside the temperature and pressure regime quoted here, please contact instrument team.

 

Best regards,

The SNAP team