News Archive

First Results of the Q-weak Experiment

Image: (September 19, 2013) First results of the Q-weak experiment at Jefferson Lab, indicated by "This Experiment". Our group built the Focal Plane Scanner for the main spectrometer, and the diamond strip tracker for electron detection in the Compton polarimeter. Dr. Jie Pan completed her PhD on the experiment last year.

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First Scan for Q-weak Scanner

Image: (August 2, Jefferson Lab, Newport News, Virginia) The first successful scan for the Q-weak scanner. The scanner was completed and commissioned by Ms. Jie Pan and Mr. Peiqing Wang. The stripe of events across the top of the image are elastic electrons passing through the main detector and then being sensed by our Q-weak scanner. The data show the first successful scan taken by the Q-weak scanner. The scanner was constructed in our laboratory at the University of Winnipeg. Data were taken with our 0.89 mm Al target with a beam current of 5 microAmperes, and with the QTOR spectrometer magnet at full current (8937 Amperes).

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Ultracold Neutron Collaboration Meeting at TRIUMF

Image: Attendees at the UCN Collaboration Meeting, held Jan 20-22, 2010 at TRIUMF, Vancouver.

Left to right: Jeff Martin (Winnipeg), Yasuhiro Masuda (KEK, Japan), Wim van Oers (Manitoba), Kichiji Hatanaka (RCNP, Osaka, Japan), Elie Korkmaz (UNBC), Des Ramsay (Manitoba/TRIUMF), Chuck Davis (TRIUMF), Akira Konaka (TRIUMF), Ken Matsuta (Osaka, Japan), Larry Lee (Manitoba/TRIUMF).

First measurement of the beta-asymmetry using ultracold neutrons

Image: schematic diagram of the UCNA experiment at Los Alamos National Laboratory. Ultracold Neutrons (UCN) are produced in the source and diffuse out to the spectrometer magnet where they decay. Detectors placed at either end of the magnet sense the betas from the decay.

Ultracold Neutron Workshop

The University of Winnipeg Subatomic Physics Group is organizing the "International Workshop, Ultracold Neutron Sources and Experiments".

Inaugural University of Winnipeg Science Summer Student Poster Session

Photo: Physics student Vince Bagnulo describes his progress on the muon veto at Los Alamos this summer to judges.

Many of The University of Winnipeg staff, students and guests spent Monday, September 11, 2006 viewing the results of undergraduate student research over the past year in a unique Natural Sciences and Engineering Research Council (NSERC) Prairies sponsored competition that is destined to become an annual event. Called The Undergraduate Science Poster Session, the competition featured 23 posters representing the work of 25 undergraduate students.

The session featured three presentations related to nuclear physics:

• David Harrison, ``Gain-monitoring system for UCNA'' on his work related to the UCNA experiment at Los Alamos, performed in the new University of Winnipeg subatomic physics detector lab this summer.
• Vince Bagnulo, ``A Muon Veto for the Ultracold Neutron Asymmetry Experiment'' on his work done at Los Alamos on UCNA this summer on a cosmic muon rejection system.
• Peter Winslow, ``A Study of the Quality of Data for TWIST'' on his work done on the TRIUMF Weak Interaction Symmetry Test as a TRIUMF summer student from UWinnipeg selected to represent the prairies region.

Also featured were several posters from the fields of physics, chemistry, biology, psychology, and geography.

Contact Jeff Martin for more information.