We have established a new Sample Environment Development lab in Lab 38. Supported by a Sample Environment Support Scientist the lab will be the first port of call for all users who wish to incorporate their sample environment into the data acquisition system on I22. This infrastructure capability includes a cut down mock-up of the essential beamline equipment including breadboards, motorised stages, geobricks and some of the data acquisition infrastructure as well as a dedicated, fully featured, GDA and EPICS environment.
We are finalising the infrastructure for the lab and would welcome ideas for potential consortia for collaboration on sample environment development. Please contact I22@diamond.ac.uk or your local contact to discuss further.
The I22 SAXS/WAXS beamline took a partnership in the recently-awarded MRC Programme Grant to develop a dedicated mechanical testing facility.
As part of the grant, I22 will be working with their partners at Cardiff University to build a facility, which will allow biological tissue and other soft matter to be mechanically tested in a variety of ways, whilst being imaged using I22's SAXS and WAXS capabilities. The facility will be designed to be as versatile as possible, by providing a variety of motors, transducers and loading platens/arms/chambers, as well as the ability to swap in bespoke parts. Here are a few examples of experiments the facility will be capable of carrying out:
To maximise utility, I22 beamline and Cardiff University have set up a network of users with an interest in biomechanics/materials mechanics that can provide feedback about the desired capabilities of the facility.
Scientists and engineers of Diamond with a specific interest in described or similar areas of research are very welcome to join the network. Please, contact Olga Shebanova (I22, firstname.lastname@example.org).
We are planning to include a robotic sample changer in a future upgrade to I22. Anyone who might have an interest should contact Olga Shebanova to discuss requirements
The beam conditioning section for I22, just upstream of the sample, had grown organically since first designed. The I22 BCO upgrade Project, planned to improve the performance and usability of the experimental hutch beamline components, to deliver quality, versatile beam to the sample area is now complete. The upgrade moved I22's microfocus capability from a drop-in endstation to a permanently installed solution that can be driven in and out of the beam dramatically reducing swap-over time between these two modes of operation (days to minutes) and improving data quality.
We have included a number of additional or improved components that will enhance the capability of this section of the beamline.
This project, to sequentially repolish the two bimorph mirrors of I22 while keeping the beamline operational with Diamond’s spare bimorph mirror, is now complete.
I22’s bimorph mirrors were in the first batch of bimorph mirrors received by Diamond. They appear to have suffered from surface damage at the piezo ceramic junctions during their early life cycle. As such it was initially impossible to fully optimise the performance of the I22 beamline to deliver the variable focus expected. It also prevented full exploitation of the Micro Focus end station on I22. Repolishing of the two I22 mirrors has seen significant improvements for I22 with this modest upgrade.
Both mirrors have now been repolished and have lead to significantly improved focusing capability. The results for the VFM are shown below
This upgrade enables I22 to work in grazing incidence mode for thin film materials and includes a hexapod sample platform and environmental chamber together with a remodelled SAXS detector platform with multiple beamstops for direct, reflected and specular beams.
This project has now delivered a replacment Silicon pixel based system for the final gas based detector on I22, HOTWAXS. I22 has purchased a 21 module device in L shaped geometry with P3 technology from Dectris. This gives I22 some 2D capability in simultaneous 2D SAXS/WAXS measurements.
The project has included the purchase of the detector and infrastructural changes to I22 to accommodate the new in vacuum detector shape.
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