snail The Synchrotron Radiation Source (SRS) was the longest running synchrotron radiation source in the world. It had been running for over 28 years and continued to provide world class experiments, results and therefore science up until its closure at 13:30 18/08/2008.

At 08:00 on the 02/08/2008 Station 9.8 closed its shutter for the last time.

I had the privilege of being a station science at the SRS in charge of small molecule X-ray crystallography (SMX). During my time there I recorded the station wavelength and schedule, hosting them via my website for external users. Access to this legacy data is still available via the links below.

Last Photons

lastphotonsDuring the last shift of beamtime on Station 9.8 Dr. Peter Byrne and I undertook some very exciting high resolution diffraction experiments. We also took a little time to do something silly. From which we “X-ray imaged” a snail shell.

It would appear that some other Station Scientist had a similar idea and they made holograms using the last photons produced from the SRS. Captured for all time in projector slides.

Last Users

There has always been a bit of controversy over who were the actual “last users” of Station 9.8. The last scheduled “user” beamtime was with Dr. Sofia Pascu (University of Bath - award number: 50235). With a team consisting of myself (pink shirt), Dr. Steffi Schiffers (blue T-shirt), Dr. Mark Warren (different shade of blue T-shirt) and of course Sofia herself (pink top).

Picture left, from left to right: Steffi, Sofia, Mark and Me - N.B. I've always contested that I am so far to the right so that they could crop me off later. Picture right, from left to right: Me, Steffi and Mark

However the actual final beamtime on the station. The beamtime which saw all the active users on the SRS being called to the “main conrol room” (in joke missing the ‘T’ there) consisted of myself and Dr. Peter Byrne. We also made a few home movies of those final hours.

The beamtime which saw all the active users on the SRS being called to the "main conrol room"

Wavelengths

Over the many years of operation, Station 9.8 and to a less extent 16.2 SMX collected data at a variety of wavelengths. If you are the kind of person who would like to know a wavelength on a particular day then this function will help you. Wavelength Selector

Schedules

Beamtime was allocated to each station on a 24 hour (3 shift) basis. Each user was given an award number which linked back to their beamtime proposal. The first two digits of the award number defining the allocation period the time was first awarded to.

Station 9.8   Station 16.2 SMX
Allocation Period 50   Closed
Allocation Period 49   Allocation Period 49
Allocation Period 48   Allocation Period 48
Allocation Period 47   Allocation Period 47
Allocation Period 46   Allocation Period 46
Allocation Period 45   Allocation Period 45
Allocation Period 44   Allocation Period 44
Allocation Period 43   Allocation Period 43