Complementary advances in synchrotron sources, x-ray optics, fast area detectors, IR lasers and adaptable remote pressure controls have recently made possible many time-resolved experimental techniques for studying materials at extreme pressure and temperature conditions. The High Pressure Collaborative Access Team (HPCAT) at the Advanced Photon Source has made a sustained effort over the past several years to assemble a powerful collection of high pressure apparatus aimed at time-resolved studies of materials, and considerable time has been invested in developing techniques for collecting high-quality time-resolved x-ray scattering data.
Techniques currently available or under development include (but are not limited to): pulsed/ramp laser-heating for thermal equation of state and melting experiments; rapid, controlled uni-directional or cyclic sample compression/decompression—with rates ranging from less than a GPa per second to extreme compression in excess of a TPa per second—for synthesis/observation of metastable high pressure phases, phase transition kinetics and fast rheology; high speed imaging for measuring viscosity at high pressure and temperature; and Laue (white beam) measurements to study phase transitions as they unfold.
Given these recently emerging technology developments at HPCAT and other synchrotron and dynamic experimental facilities, it is an opportune time for the static high pressure community to come together and exchange ideas, report first results, and discuss future plans. Thus, HPCAT will present a two and half day workshop dedicated to time-resolved x-ray scattering techniques.
Ideas will be exchanged through invited and contributed talks, discussion periods, and an evening poster session. We expect a diverse group of researchers in high pressure and time resolved techniques, with a significant number of young researchers attending, and we anticipate the outcome will have a significant impact in understanding matter at extreme conditions.
Welcome to HPCAT workshop on high-pressure time-resolved synchrotron techniques 2014!
Workshop Purpose and Goals:
- Introduce time-resolved apparatus and techniques currently available at HPCAT and other synchrotron facilities
- Present the results of time-resolved high pressure research carried out at HPCAT and other facilities
- Motivate students and early career researchers to pursue time-resolved research programs
- Demonstrate available facilities and software during hands-on practical sessions
- Identify scientific goals and associated technical challenges for future time-resolved studies
- Anticipate the expanded scope of time-resolved high-pressure research that will be enabled by the proposed APS MBA upgrade
The workshop contents:
- Plenary sessions (mainly invited speakers with possible few contributed talks)
- General overview session
- Time-resolved high-pressure x-ray imaging
- X-ray micro-diffraction with fast compression and decompression
- Pulsed/ramped laser heating and x-ray micro-diffraction
- New time-resolved high-pressure X-ray techniques and directions and related topics
- A poster session for all participants (contributed, topics are not limited). The session will take place in the first evening and will have some allocated time after lunch on both Thursday and Friday.
- 2-3 hours split session for demonstrations and hands-on learning: three or four parallel practical sub-sessions on data reduction and analysis, fast compression-decompressions and cyclic pressure generation and control in DAC, pulsed and ramped laser heating in DAC, and fast imaging (the workshop is scheduled during the facility maintenance period therefore all experimental demonstrations and exercises will be performed without x-ray beam).
- Tours of APS experimental facilities.
$150 registration fee will be assessed to all attendees, which includes the cost of meals, coffee breaks, and an abstract volume.
Reimbursement-based, limited financial support for young-career scientists (student and post-docs) is available through generous sponsor contributions (COMPRES and CDAC). The grants will cover transportation, lodging, and registration. The grants can be used to support young applicants at ~$300-$650 per applicant with $650 cap per person. Travel support is available on a first-come first-serve basis and is limited. Grant applications should be submitted to HPCAT before September 1st. A short recommendation letter from supervisor/advisor is required.