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Newsletter=========================================================== CLS-News Vol. 2 No. 7 April 20, 2004 www.lightsource.ca University of Saskatchewan, Canada ====================================================================
*************************************************************************** 1- CLS recognized as a powerful tool to track environmental arsenic (Contact: sandra.ribeiro@lightsource.ca ) The CLS has been awarded a federal Environmental Technology Verification (ETV) certificate which recognizes the synchrotron’s value in testing arsenic quickly and with unprecedented accuracy, an advance that will help protect the environment. Federal Environment Minister David Anderson made the announcement at the Globe 2004 Environmental Conference in Vancouver, on March April 2nd. “The Government of Canada is proud to recognize Canadian Light Source as a recipient of the ETV Awards,” Anderson said. “The technology developed by Canadian Light Source demonstrates how the innovation of industry can make a difference to protect the environment and improve the health and quality of life for all Canadians.” For example, COGEMA Resources Inc. is using synchrotron analytical techniques to prove arsenic in their tailings treatment facility in northern Saskatchewan is properly bound in mineral form. John Rowson, director of McClean Regulatory Affairs for the uranium mining company, says the synchrotron provided the data they needed to demonstrate that the company’s process was working as planned. For the full story please go to: http://www.lightsource.ca/media/powerful_tool.php *************************************************************************** 2- Research Director Posting – CLS Scientific Leader (Contact: bill.thomlinson@lightsource.ca) In co-operation with the University of Saskatchewan, the CLS is continuing the recruitment process to hire a Research Director to lead scientific programs at the facility. Consideration of applications will continue until a suitable candidate is found. Interested applicants are encouraged to contact Bill Thomlinson, Executive Director. For more information please go to: http://www.lightsource.ca/careers/researchdirector.php *************************************************************************** 3- Commissioning progress (Contact: mark.dejong@lightsource.ca) Stored current and lifetime: we have reached the operating goal of 100 mA. This current can now be reached in less than 5 minutes as injection efficiencies approach our design goal of 80%. Beam lifetime, while currently approximately 0.5 hours, will improve to 10s of hours as more beam is circulated and the vacuum chamber is "conditioned". Tunes: Tunes are adjusted with the three quadrupole families. The storage ring is now operating at the design tunes: 3.26 vertical and 10.22 horizontal. These tunes establish the source sizes for which the photon beamlines have been designed. Small adjustments to the tune may be done in the future to maximize beam lifetime, stability and dynamic aperture. Emittance: At the design tunes the horizontal emittance should be approximately 20 nm-rad. Preliminary estimates, as observed in the Optical Synchrotron Radiation (OSR) beamline, indicate that this emittance is closer to 30 nm-rad in the stored beam. Further fine adjustment of the control system and the lattice is expected to reduce this to the design value. The vertical emittance is determined by the amount of coupling between the horizontal and vertical motion. As observed on the OSR the coupling is less than 3% resulting in a vertical emittance of less than 1 nm-rad. Beam size and position stability: Our 2004 design goal is to have the beam stability be less than 10% of the beam size. With 10-20 micron stability the horizontal motion just meets this goal. The vertical motion stability is under 5 microns, which is very close to meeting our goal as well. As we reduce the coupling, the vertical size is reduced and the vertical stability will have to be improved. Brightness: In our storage ring the brightness of the beam is proportional to the stored current and inversely proportional to the beam sizes. In the future brightness will be increased by increasing the current to (eventually) 500 mA and reducing the vertical beam size by reducing the vertical coupling. *************************************************************************** 4- Experimental facilities update (Contact: emil.hallin@lightsource.ca) Tremendous progress has been made in the last months in the installation of the SGM and VLS-PGM beamlines at the CLS. It is anticipated that the vacuum systems will be complete (except for a scienta sized hole in the SGM) before the end of April. The SGM insertion device has been operated, and first light from an insertion device has been demonstrated in the primary Optical Enclosure for these beamlines. The VLS-PGM insertion device will be operated during the next run (in May) and it is hoped that synchrotron light will be brought to the PGM endstation some time during the May run! The team is to be congratulated for bringing us this close to first light! Special thanks to the CLS Engineering and technical services group and to the CLS Controls and instrumentation group for their outstanding efforts, and to the dedicated science team (Ian Coulthard, Yongfeng Hu, Lucia Zuin and Tom Regier) for theirs! We look forward to many years of productive and exciting science from these beamlines; hopefully beginning next month. Rapid progress is being made on the other beamlines as well, with the primary Optical Enclosure for the Soft X-ray Spectromicroscopy beamline nearing completion. The design of the STXM endstation will be finalized soon, and with that, nearly all of the outstanding issues on this beamline will have been put to rest. Thanks to the engineering and controls groups and to Konstantine Kaznacheev and Pavel Doudine. The design of the IR beamlines has been “frozen” and all outstanding technical issues have been solved. Congratulations to Tim May and the engineering staff on a job well done. Work has begun on the primary Optical Enclosure for the protein crystallography beamline, and Pawel Grochulski and Alan Duffy have, with lots of help from engineering and controls, resolved all of the remaining technical issues regarding the endstation. Most of the optical components will be in house by the end of next month, and they’ll have a place to live on the floor by August. The micro-XAFS core beam team has done a tremendous job in directing Kohzu engineering staff to a solution of a heat transfer problem that threatened to make one of Kohzu’s first crystal cages (they expanded their excellent monochromators to include crystal cages in part at our request) not be thermally acceptable. De-Tong Jiang and Ning Chen have put in an enormous number of hours working through this technical problem, and they’ve been working odd schedules as well to better coordinate with Kohzu staff in Japan. Earlier this month, the prototype of the CLS superconducting wiggler has been completed and tested at the Budker Inst., Russia. The maximum magnetic field reached without quenching was well-beyond the design specification. The construction has since proceeded to build the full length wiggler. *************************************************************************** 5- Outreach at the CLS: A sampling of typical tours (Contact:tracy.walker@lightsource.ca) The Canadian Light Source is becoming increasingly popular with many different groups hoping to tour our facility. In March there were a total of 788 people touring our facility. Groups included: 1. Walter Murray Collegiate grade 10 Science class of 20 students, “My students are particularly bright and wondering about how we can know something like electrons are there if we can't see or touch them. They have asked several times what the Synchrotron does.” 2. The 9th National Congress on Rural Education prompted 125 school administrators, trustees, teachers, and parents to tour our facility. 3. Farm Credit Corporation Executives included the CLS in their busy tour of campus agriculture-related research facilities. Visit the Outreach WebPages at http://www.lightsource.ca or request a tour at http://www.lightsource.ca/tour/education/request_form.php *************************************************************************** 6- IUCr 2004- August 18-21- Registration Now Open! (Contact: john.tse@nrc-cnrc.gc.ca) You are invited to present an oral or poster contribution at the 2004 International Union of Crystallography - High Pressure Commission Workshop to be held at the newly commissioned Canadian Light Source on the campus of University of Saskatoon, Saskatchewan, Canada during 18th-21st August, 2004. This international workshop will focus on recent advances in high pressure sciences and techniques. The workshop will consist of a series of Keynote lectures highlighting the state-of-the-art of High Pressure Research and invited presentations covering New Materials and Chemistry, Mineral and Geophysics, Liquids, Single Crystals Metals and Alloys, Theory and Computation and the latest of techniques development. We encourage young scientists and graduate students to attend this conference. A small bursary will be available to support the travel of eligible attendances. We hope that you will be able to attend the workshop and contribute a paper. Details of the programme and invited speakers can be found on http://www.lightsource.ca/iucr2004 Yours sincerely, *************************************************************************** 7- CNSC holds public hearing on CLSI operating licence (Contact: mohamed.benmerrouche@lightsource.ca) The Canadian Nuclear Safety Commission (CNSC) has confirmed that it will hold a one-day public hearing on June 8, 2004, on our CLSI application for an amendment to our particle accelerator operating licence which would authorize routine operation of the facility. The Public Hearing will be held at the Delta Bessborough, Battleford Room, 601 Spadina Crescent East, Saskatoon, Saskatchewan, and will begin at 8:30 a.m. The agenda will be published prior to the hearing date. To read the announcement please click here: http://www.nuclearsafety.gc.ca/eng/commission/pdf/04H-8(e)-CLS.pdf *************************************************************************** 8- New Staff and Now Hiring (Contact: nancy.fetch@lightsource.ca) Ian Berry and Jeff Wetzel joined CLS in March as Mechanical Technicians in the Engineering and Technical Services Department. Marie Knowles has been hired as Research Administrative Assistant, taking on the position left vacant by Betty Harper, who is now the Executive Assistant in the Executive Director's office. In the Business Development office, Jeff Warner is our newest Research Associate, working with our industrial clients. Jeff left sunny California, Berkeley National Laboratory specifically, to join us in even sunnier Saskatoon! Summer student recruitment is almost completed, with many departments looking forward to having a student assist them with special projects or general facility operations during the summer. For more information please go to: http://www.lightsource.ca/careers/ *************************************************************************** 9- In memoriam: Dr. Leon Katz (Contact: clsi@lightsource.ca) Saskatchewan lost one of its founding fathers of nuclear science with the passing of Leon Katz on March 1. He was 94. Scientist, teacher and mentor, Katz was the driving force that brought the Saskatchewan Accelerator Laboratory (SAL) to the U of S campus in 1963. The SAL and its core of specialized expertise would be critical more than 30 years later in bringing the Canadian Light Source (CLS) synchrotron project to Saskatoon. Katz’s reputation was founded on groundbreaking work done with a betatron at the U of S, a sort of office-sized “mini-synchrotron” used for cancer treatment research and nuclear physics. Katz’s team worked to describe the structure and characteristics of the atomic nucleus. During his career, he would be honoured as a member of the Order of Canada and inducted as a Fellow of the Royal Society of Canada. SAL, at the time one of fewer than a dozen linear accelerators (linacs) in the world, became a beacon for international scientists working in subatomic physics. It lured Bergstrom back from his post in Washington, D.C., together with physicist Dennis Skopik, who would become one of the prime movers behind the CLS project. This was Katz’s talent, according to Bergstrom: the ability to take an idea, build a team, and get things done. While he retired before the CLS got started, he was on hand for every major event, from the groundbreaking in 1999 to the dedication of a room in his honour with Prime Minister Jean Chrétien in November 2000. For the full story please click here: http://www.usask.ca/communications/ocn/04-mar-19/news13.shtml ==================================================================== CLS E-News is an electronic newsletter designed to keep users informed about developments at the Canadian Light Source, the national synchrotron user facility located at the University of Saskatchewan, Saskatoon, SK. Current and past issues of CLS E-News are available on the CLS web site: http://www.lightsource.ca/enews/archives.php To unsubscribe please go to http://www.lightsource.ca/enews/signup.php. We welcome suggestions for topics and content. =========================================================== Last modified: 2008-07-29 14:07:29 |
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