Please read: Policy about the provision of diamond anvil cells (DACs).
DACs will be provided only to non-DAC research groups.
DACs with 50 or 60 mm outer diameter fit in our standard V-block mount (side- and top-view) on the diffractometer and micro-focus station. For low-temperature experiments with the pulse-tube cooler a mechanical cell of Holzapfel-Syassen type have to be used.
- Users intending to use DACs provided by I15 have to request the equipment explicitly in the proposal. Please read the policy about using a DAC.
- Digital pressure controllers: DPI 515 and PACE 5000 allow to remotely control the membrane via software.
- Betsa K-ring external heating systems; max temperature depending on DAC. Generally used on I15 up to 200 deg C. Inner diameter of heater sleeves is 50mm.
Pressure measurement on-line (diffractometer & micro-focus station): superhead from Horiba Jobin-Yvon with optical fibres and fibre coupled 473 nm laser.
Ruby spheres available on demand.
For internal pressure calibrants (e.g., Au, Ta, etc.) contact staff.
High-pressure gas loading system from Sanchez Technologies.
Gas loading for membrane driven DACs (Betsa type) available. Users intending to use it have to request the equipment in the proposal. Please read the following policy about using the gas loading system below.
Policy about the provision of the gas loading system
- The request of gas loading and the gas or gas-mixture should explicitly be made in the beamtime proposal.
- Users have to ensure they contact the beamline team well in advance (minimum 8 weeks) of the beamtime to discuss details of the request and the availability of the equipment.
- We cannot guarantee a successful loading and will not be liable for any damage to DACs not belonging to I15.
- Any unsuccessful loading will lead to a cancellation of the beamtime by the Users and they should resubmit the proposal. Alternatively, the beamtime can go ahead if Users are prepared for a back-up experiment.
- The gas loader is designed to accommodate membrane-Diamond Anvil Cells (mDAC) with diameter ≤ 60 mm and height ≤ 85 mm and mechanical DAC of Syassen-Holzapfel type.
- Standard pressure media are He, Ne, Ar or N2; other inert gases or gas mixtures have to be requested well in advance (minimum 10 weeks) of the beamtime.
- The equipment is available for academic Users; industrial Users should contact Elizabeth Shotton.
- The use of the equipment has to be stated in all related publications.
The equipment has to be operated under the health and safety rules provided and the advice of the beamline staff must be followed.
VX4 under construction.
Policy about the provision of diamond anvil cells (DACs)
- DACs will be provided only to non-DAC research groups.
- The need of a Diamond Anvil cell (DAC) has to be requested explicitly in the beamtime proposal, otherwise the provision of a DAC cannot be guaranteed.
- Users have to ensure they contact the beamline team as soon as possible (minimum 8 weeks) prior to the beamtime to discuss details of the experiment.
- Standard membrane-driven DACs and mechanical DACs of Syassen-Holzapfel type for low-temperature experiments are provided.
- One DAC per beamtime visit will be prepared for Users.
- Samples have to be supplied as soon as possible to make sure that the preparation of the DAC can be done well in advance of the beamtime.
- We cannot guarantee a successful preparation. Unsuccessful preparations will lead to a cancellation of the beamtime by the Users and they should resubmit the (modified) proposal. Alternatively, the beamtime can go ahead if Users are prepared for a back-up experiment.
- DACs will be provided for standard diffraction and XPDF experiments (p < 50 GPa) either at ambient temperature or for external resistively heated DACs or low temperature experiments (p < 30 GPa); glovebox preparations are excluded.
- Various pressure-transmitting media are available; gas loading has to be requested in beamtime proposal, but depends on availability (see 'Gas Loading' tab above).
- Members of beamline staff involved in the preparation of the DAC have to be co-authors of any publication resulting from the experiment.
- Any decision regarding any issue that affects the safety of the equipment ultimately lies with the beamline staff.
- The equipment has to be operated under the health and safety rules provided and the advice of the beamline staff must be followed.