News
New Sample-changing Robot for Powder Diffractometers
21 July 2008
Today, for the first time, we successfully tested a new sample-changer robot on the ECHIDNA high-resolution powder diffractometer. The robot proved vastly superior to the old sample changer used at HIFAR and it can handle 50-100 samples, depending on the configuration.
Operating Licences for Powder Diffractometers
15 July 2008
The operating licences for the two powder diffractometers ECHIDNA and WOMBAT were issued today by ARPANSA, our nuclear regulator.
Margaret Elcombe Retired after 41 years
11 July 2008
After 41 years and 6 ½ months service, Dr. Margaret Elcombe has retired. Margaret's research career was strongly connected with HIFAR: she gave a great deal of herself to promote neutron scattering and was always very enthusiastic with users. Trained in Cambridge, Edinburgh and Chalk River in crystallography and lattice dynamics she came to ANSTO, then the Australian Atomic Energy Commission, in 1967. We wish Margaret all the best for the future, but we are sure that we will see her back as one of our users on our new neutron instruments.
First Structural Refinement on KOALA
2 July 2008
We have successfully completed our first structural refinement using data taken on the KOALA quasi-Laue diffractometer, on a crystal of potassium permanganate. This was the second commissioning sample used on KOALA. Six exposures each of 10 minutes were taken, giving 2400 reflections of which 500 were unique.
First Diffraction Pattern measured on KOALA
19 June 2008
Today we successfully measured our first single-crystal diffraction pattern on our new KOALA Quasi-Laue Diffractometer. The sample was a salt crystal, the same material as used by Wiliam and Lawrence Bragg in their first x-ray diffraction experiments almost a century ago. This brings the number of instruments at OPAL, with observations from a sample into the main detector, to five out of seven instruments.
First Strain Scan on KOWARI
17 June 2008
Today, as part of instrument commissioning, we completed our first full strain scan on the KOWARI Strain Scanner. The scan was a 60-mm scan across a weld in steel, using the Fe(211) Bragg reflection and a gauge volume of 2 x 2 x 20 mm3.
Our Safety Interlock System wins another prize
17 June 2008
Our safety interlock system, designed by Dr. Frank Darmann and his team of engineers and technicians, has won the 2008 PACE Zenith Award.
First Reflection on PLATYPUS
13 June 2008
Today, for the first time, we reflected a neutron beam from a solid sample (silicon in air) in our PLATYPUS neutron reflectometer and observed the reflected neutrons in the area detector. In the figure shown above, the instrument was not completely characterised and no background has been subtracted.
Research Meeting with CSIRO Materials Science & Engineering
11 June 2008
Today we held a joint workshop with CSIRO at its Linfield site in Sydney to explore ways in which we might collaborate on problems of mutual interest.
OPAL is back to 20MW
23 May 2007
We are very pleased to announce that the OPAL reactor came back to full power today, that the shutters on all seven instruments were opened for radiation survey, and that commissioning of the seven initial instruments has resumed. The cold neutron source continues to run well. During the last ten months of the OPAL shutdown, we have also successfully tested most of the new sample-environment apparatus on the two powder diffractometers. Before scheduling user experiments, we still need (a) operating licences from our nuclear regulator, ARPANSA, and (b) a published schedule from Reactor Operations at ANSTO. Requests for operating licences on the ECHIDNA and WOMBAT powder diffractometers will likely be submitted within the next month, with the other submissions to follow, depending on our progress with commissioning.
First Neutrons into QUOKKA and TAIPAN
20 May 2008
Today, for the first time, we opened the shutters at low reactor power on the QUOKKA small-angle neutron scattering instrument and the TAIPAN 3-axis spectrometer. This brings the number of instruments in the "hot-commissioning" state to seven.
Small-angle Scattering Detector installed in QUOKKA
9 May 2008
Today, for the first time, the 1m2 two-dimensional position-sensitive detector was installed in the QUOKKA small-angle neutron scattering instrument.
OPAL Reactor runs again
9 May 2008
The OPAL reactor was taken critical today at 12:15 pm. Today's criticality was the first since the reactor was shutdown in July 2007, following the identification of a number of displaced fuel plates in the reactor core. According to ANSTO's "return to service program" it is expected that full power operation will be achieved before the end of May. We would like to take this opportunity to thank: all the ANSTO staff who have been involved in the shutdown activities, fuel modification submission and the "return to service" program; people from a number of national & international organisations that assisted and supported these activities; our users and customers for their understanding and patience during this difficult period; and staff from the Australian nuclear regulator, ARPANSA, for their focus and rigour of the fuel submission.
New Sample Environment Arrives
5 May 2008
Today, another important piece of sample-environment apparatus arrived: a 100kN horizontal load frame for the KOWARI Strain Scanner. The load frame was built by Instron, and is very similar to those available at other leading neutron centres. It is primarily intended for engineering and materials-science studies involving in-situ loading and/or fatigue measurements. It will in the future be fitted with a high-temperature furnace.
OPAL Reactor re-start approved
5 May 2008
ANSTO was advised today that it now has a green light to re-start the OPAL research reactor.
ARPANSA has approved design and use of modified reactor fuel for OPAL
1 May 2008
Our independent regulator, ARPANSA, today announced approval of ANSTO's submission for a modified design of reactor fuel for the OPAL reactor. ANSTO may now undertake the first part of its Return to Service Program and load the modified fuel into the OPAL reactor. For more detail see the press releases by ARPANSA and ANSTO.
Second SAXS Instrument Ordered
30 April 2008
We have placed an order, with HECUS in Graz, Austria, for a second small-angle x-ray scattering instrument to complement our existing pin-hole SAXS machine, and our state-of-the-art QUOKKA small-angle neutron scattering instrument. The new machine is essentially a Kratky camera, and is intended to relieve some of the demand for the pinhole machine and to provide some alleviation for reliability problems.
Work by Institute Staff featured on Cover of Advanced Engineering Materials
29 April 2008
Work by Klaus-Dieter Liss, one of ANSTO's Senior Research Fellows based in the Bragg Institute, is featured on the cover of the April 2008 edition of Advanced Engineering Materials. The full reference to the research article is K.-D. Liss et al., "Directional Atomic Rearrangements During Transformations between the alpha- and gamma-Phases in Titanium Aluminides", Advanced Engineering Materials 10(4), 389-392 (2008).
New postdoctoral fellow, jointly with CSIRO, started with us
28 April 2008
Dr. Alice Klapproth joined us today as a postdoctoral fellow, funded jointly by CSIRO's Wealth from the Oceans Flagship Project and ANSTO. Alice is experienced in neutron diffraction studies on gas hydrates, having completed her Ph.D thesis in this area with Prof. Werner Kuhs at the University of Goettingen in Germany, and along the way conducting some of the most significant structural investigations on the formation of methane hydrates. During her fellowship she will be based in the Bragg Institute.
Bragg Institute Advisory Committee meets (virtually)
15 April 2008
Over the last week, the Bragg Institute Advisory Committee has conducted a vigorous debate via e-mail in order to give the Institute strategic advice. This virtual meeting was in place of the regular meeting normally held at this time of year, and it was held in this manner due to financial constraints imposed by the non-operation of the OPAL reactor for the last 9 months. We intend that the committee meet face-to-face next time in April 2009.
Funding Success for Australia-India Collaboration Meeting
11 April 2008
We learnt today that, in collaboration with the Australian Synchrotron in Melbourne, we have been successful in winning a $25k DIISR grant to organise a 2-day meeting on "Indo-Australian Collaboration in Neutron and Synchrotron Science", to be held on 23-24 August at the Tata Institute of Fundamental Research in Mumbai, India.
New postdoctoral fellow in polymers started with us
7 April 2008
Dr. Andre Heinemann joined us today as a postdoctoral fellow, working for the Cooperative Research Centre for Polymers, of which ANSTO is a member. Andre is an expert in small-angle scattering, and joins us most recently from the Hahn-Meitner Institute in Berlin.
High-Performance Computing Cluster now fully operational
3 April 2008
Our new high-performance computing cluster, Warragamba, is now fully operational in parallel mode, and serious testing and benchmarking has now begun. The head node and all 6 compute-nodes are operational giving a total of 32 cores with 96GB of memory. There are still a good number of applications to be installed, but with the experience that we have gained so far and extra scientific support this should proceed quite rapidly. Although most applications are aimed at supporting research and instrument simulation at the Bragg Institute, there are also applications from other parts of ANSTO.
Commercialisation Success in Polymers
27 March 2008
Two Australian companies, Moldflow and Advanced Polymerik, have announced an agreement to incorporate results from work, involving Robert Knott, as part of ANSTO's involvement in the Cooperative Research Centre for Polymers, into Moldflow's injection molding software. Our distinctive contribution was to characterise the effects of different processing conditions on the resulting microstructure across moulded components, using synchrotron radiation experiments. Moldflow is the dominant supplier of software for injection moulding, a process used in roughly a third of all plastic products.
New on-line tool for Resolution & Intensity Calculations on ECHIDNA
25 March 2008
Today, we launched a new on-line widget (bottom of page) for calculations of resolution and intensity on our high-resolution powder diffractometer ECHIDNA. A similar widget will soon be available on the WOMBAT high-intensity powder diffractometer.
New postdoctoral fellow in thermo-mechanical processing started with us
19 March 2008
Dr. Ulf Garbe joined us today as a postdoctoral fellow, working in the area of thermo-mechanical processing with Dr. Klaus-Dieter Liss. Ulf is an expert on measurement of texture, and joins us most recently from the GKSS outstation at the new FRM-II research reactor in Munich, where he was responsible for the STRESS-SPEC residual stress and texture diffractometer.
Formation of Asia-Oceania Neutron Scattering Association
7 March 2008
ANSTO participated today in a meeting, held as part of the IPS08 conference in Mito Japan, to establish the Asia-Oceania Neutron Scattering Association, a federation of user groups in the Asia-Oceania region. Initial membership consists of the Japan Society for Neutron Science, the Australian Neutron Beam Users Group and the Korean Neutron Beam Users Association. An interim executive committee is currently being formed, with the formal announcement of the Association expected at the XXI Congress of the International Union of Crystallography in Osaka, Japan, in August 2008.
NOBUGS 2008 Conference
28 February 2008
We announced today the NOBUGS 2008 Conference, which focuses on collaboration amongst developers of computer techniques for scientific instrumentation, especially as employed at large-scale user facilities like neutron and synchrotron-radiation sources. The meeting will be held in Sydney between 3 and 5 November 2008. The previous meeting in the series was held at Lawrence Berkeley National Laboratory in the USA in October 2006.
Nuclear Regulator Submits Questions
21 February 2008
ANSTO today announced further news on the restart of the OPAL reactor: ARPANSA, our independent regulator, has this week submitted a series of questions, to which ANSTO will respond as quickly as possible. This is expected to take some weeks. This is in response to ANSTO's application to ARPANSA on 22 December 2007 and ARPANSA's subsequent advice on 1 February 2008 that questions and requests for clarification would be sent to ANSTO as part of the review process.
Small-Angle X-ray Scattering Instrument
21 February 2008
Our small-angle x-ray scattering instrument, completely rebuilt by the manufacturer and using a new electronic detector, has returned to ANSTO and is now undergoing commissioning tests. This follows the breakdown of the old instrument on 22 August 2007.
New Neutron News Editor
8 February 2008
Herma Buttner, our User Coordinator, has been appointed editor of the international magazine Neutron News. In this capacity, she succeeds Prof. Joel Mesot, who has been appointed Director of the Paul Scherrer Institute in Switzerland.
Fifth Edition Bragg Peaks
25 January 2008
The fifth edition of the quarterly newsletter Bragg Peaks featuring news on the OPAL reactor, our instruments, people, workshops, and science was issued today.
ARPANSA review ANSTO's Submission
11 January 2008
ARPANSA, our independant safety regulator, has commenced reviewing ANSTO's submission of 22 December 2007 in detail. ARPANSA are utilising external expertise to assist in its evaluation of the submission, particularly in areas of vibration and of reactor fuel design and manufacture. The Chief Executive Officer of ARPANSA has arranged for a briefing and discussion of the submission by the Nuclear Safety Committee to be held on 25 January 2008.