Canadian Light Source Inc.

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CLS E-News Vol. 8 No. 2
www.lightsource.ca January 27, 2011
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CLS-Led Team Aims to Produce Medical Isotopes without Nuclear Reactor
Call For Proposals Opens Tuesday February 1, 2011
CMCF - New Proposals, Mail-In and Beam Time Requests Available Online
Accepting applications for the 2010 G. Michael Bancroft PhD. Thesis award
CLS Graduate Student Travel Support Program
Research Highlight: Molybdenum Speciation in Uranium Mine Tailings...
CLS 14th Annual Users' Meeting (AUM), June 24-25, 2011
Canadian Synchrotron Summer School, June 19 - 22, 2011, Saskatoon
Synchrotron Environmental Science V (SESV) - June 23, 2011, Saskatoon

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1. CLS-LED TEAM AIMS TO PRODUCE MEDICAL ISOTOPES WITHOUT NUCLEAR REACTOR

Producing medical isotopes safely, cheaply and reliably without using a nuclear reactor or weapons-grade uranium is the aim of a research project led by the Canadian Light Source (CLS) along with the National Research Council of Canada (NRC), NorthStar Medical Radioisotopes and medical researchers from the University of Ottawa Heart Institute and Toronto's University Health Network.

The Canadian Medical Isotope Project will receive $10 million from the Government of Canada and $2 million from the Province of Saskatchewan to study the technical and economic feasibility of producing medical isotopes using high energy X-rays from a particle accelerator.

The project, one of four being funded by Natural Resources Canada's Non-reactor-based Isotope Supply Contribution Program (NISP), was announced January 24 by Minister of Natural Resources Christian Paradis at an event in Sherbrooke, QC and by Mr. Brad Trost, M.P. for Saskatoon-Humboldt, and Saskatchewan Innovation Minister Rob Norris at the CLS in Saskatoon.

For the full press release, please go to: http://www.lightsource.ca/media/media_release_20110124.php
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2. CALL FOR PROPOSALS OPENS TUESDAY FEBRUARY 1, 2011
Contact: mailto:clsuo@lightsource.ca

The Call for Proposals will open on Tuesday, February 1, for scheduling of beam time for the July-December, 2011 period. The schedule can be viewed at http://www.lightsource.ca/operations/schedule.php

***THE DEADLINE FOR PROPOSALS IS MARCH 1, 2011***

GENERAL USER PROPOSALS received for operational beamlines are reviewed for safety and technical feasibility, and then scored for scientific merit by an external review committee. Research time obtained through this competitive peer review process takes place twice per year. General User research should result in the publication of scientific results.

You have the option of submitting a NEW proposal or submitting a Beam Time Request against an Active Proposal. Allocation of shifts for July-December, 2011 will be based on the highest ranked proposals (both new and active). The evaluation criteria include quality of science, suitability of CLS resources and quality and capability of the researchers. To view evaluation criteria used in reviewing and rating proposals see http://www.lightsource.ca/uso/peer_reviews.php or to compare your score to others on the same beamline, please visit http://www.lightsource.ca/uso/results_of_call.php

View participating Phase I and Phase II beamlines participating in the Call at http://www.lightsource.ca/uso/beamline_status.php

In addition to normal mode operations at 250 mA, shifts are available for Single Bunch Mode and Coherent Synchrotron Radiation studies. These shifts must be applied for through the General User program.

For more information, please visit our website: http://www.lightsource.ca/uso/call_proposals.php
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3. CANADIAN MACROMOLECULAR CRYSTALLOGRAPHY FACILITY (CMCF) - NEW PROPOSALS, MAIL-IN AND BEAM TIME REQUESTS AVAILABLE ONLINE
Contact: mailto:clsuo@lightsource.ca

New proposals are being accepted for the Canadian Macromolecular Crystallography Facility starting Tuesday, February 1. The deadline for proposal submission is March 1, 2011. General User beam time is obtained by competitive peer review twice per year, emphasizing the excellence of science where there is intent to publish scientific results.

Proposals which are approved for safety and technical feasibility, ethics ( if applicable), and receive a score between 1 and 4, will be considered ACTIVE and remain active for 2 years (four cycles). Active proposals are not re-evaluated and may request shifts as required throughout the two-year timeframe.

Options for shift requests include:

Mail-In requests - data collection performed by the beamline staff on behalf of the research team. Up to three shifts per week (a total of 24 hours) are available for "Mail-In" requests. Requests are handled on a first-come, first-served basis. If simultaneous requests occur, priority shall be given to the highest peer-reviewed scoring proposal.
Beam Time Requests - data collection performed by the research team coming to CLS. All requests must be received a minimum of two weeks prior to the start of the intended beam time and no greater than six months in advance.

For additional details please see http://www.lightsource.ca/uso/macromolecular_crystallography.php
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4. ACCEPTING APPLICATIONS FOR THE 2010 G. MICHAEL BANCROFT PH.D. THESIS AWARD
Contact: mailto:BancroftAward@lightsource.ca

Applications are now being accepted for the 2010 G. Michael Bancroft Ph.D. Thesis Award. All material must be received at the CLS by March 1, 2011.

Named after one of the founders of Canadian synchrotron science, the award consists of a plaque and a cash prize of $3000. The CLS will present the award annually to the Ph.D. thesis based on CLS data judged to be the best published in the last calendar year. The award will be presented at the Annual Users Meeting, where the winner will be invited by the UAC to present their results.

For information on how to apply, please visit http://www.lightsource.ca/uso/bancroftthesisaward.php
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5. CLS GRADUATE STUDENT TRAVEL SUPPORT PROGRAM
Contact: mailto:travelsupport@lightsource.ca

The CLS places a high value on student training. The facility offers an ideal environment for graduate students to have access to world-class facilities, and to interact with scientific colleagues from around the globe. The Graduate Student Travel Support Program was developed to enhance access to the CLS by graduate students from Canadian colleges and universities.

This program will continue in Cycle 13 (January - June 2011). Each grant has a maximum value of $1500. The application process is now open and will be filled on a first come, first served basis.

For more information regarding the application process and eligibility criteria, please visit: http://www.lightsource.ca/uso/travel_support.php
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6. RESEARCH HIGHLIGHT: MOLYBDENUM SPECIATION IN URANIUM MINE TAILINGS USING X-RAY ABSORPTION SPECTROSCOPY
Contact: mailto:joe377@mail.usask.ca

Uranium (U) mill tailings in northern Saskatchewan, Canada, contain elevated concentrations of molybdenum (Mo). The potential for long-term (>10 000 years) mobilization of Mo from the tailings management facilities to regional groundwater systems is an environmental concern. To assist in characterizing long-term stability, X-ray absorption spectroscopy was used to define the chemical (redox and molecular) speciation of Mo in tailings samples from the Deilmann Tailings Management Facility (DTMF) at the Key Lake operations of Cameco Corporation. Comparison of Mo K near-edge X-ray absorption spectra of tailings samples and reference compounds of known oxidation states indicates Mo exists mainly as molybdate (+6 oxidation state). Principal component analysis of tailings samples spectra followed by linear combination fitting using spectra of reference compounds indicates that various proportions of NiMoO4 and CaMoO4 complexes, as well as molybdate adsorbed onto ferrihydrite, are the Mo species present in the U mine tailings. Tailings samples with low Fe/Mo (<708) and high Ni/Mo (>113) molar ratios are dominated by NiMoO4, whereas those with high Fe/Mo (>708) and low Ni/Mo (<113) molar ratiosare dominated by molybdate adsorbed onto ferrihydrite. This suggests that the speciation of Mo in the tailings is dependent in part on the chemistry of the original ore.

This research was conducted at the HXMA beamline by users from the University of Saskatchewan Departmental of Geological Sciences and Cameco Corporation.

Reference: Essilfie-Dughan, J.; I.J. Pickering, M.J. Hendry, G.N. George, T. Kotzer. Molybdenum Speciation in Uranium Mine Tailings Using X-ray Absorption Spectroscopy. Environmental Science and Technology, 2011, 45(2), pp. 455-460. DOI: 10.1021/es102954b
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7. CLS 14TH ANNUAL USERS' MEETING (AUM), JUNE 24-25, 2011
Contact: mailto:serge.desgreniers@uottawa.ca

The Canadian Light Source 14th Annual Users' Meeting will be held at the University of Saskatchewan in Saskatoon, June 24-25, 2011. The meeting is a great opportunity to learn about the science carried out at the Canadian Light Source, present your recent synchrotron work, and meet fellow users.

Workshops covering a wide range of topics will be held on Friday, June 24, 2011, followed by the Users' Meeting on Saturday, June 25, 2011.

More information will be posted soon on: http://www.lightsource.ca/uac/meeting2011/
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9. SYNCHROTRON ENVIRONMENTAL SCIENCE V (SESV) - JUNE 23, 2011, SASKATOON
Contact: mailto:jeff.warner@lightsource.ca

CLS will host the fifth Synchrotron Environmental Science meeting on June 23, 2011. Continuing the tradition established by previous SES conferences, SES V will bring together a diverse community of environmental and synchrotron scientists.

Please visit our webpage for continuously updated information: http://www.lightsource.ca/sesv/

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CLS E-News is an electronic newsletter designed to keep users and stakeholders informed about developments at the Canadian Light Source, the national synchrotron research facility located at the University of Saskatchewan, Saskatoon. Current and past issues of CLS E-News are available on the CLS web site: http://www.lightsource.ca/enews/archives.php
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Last modified: 2012-01-19 17:01:07

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