

dark matter News Archive

A partial view of the apparatus used at Jefferson Lab to measure the weak charge of the proton. The electron beam travelled down a vacuum pipe from left to right. Electrons scattered from the liquid hydrogen target were selected by a contoured shielding system and deflected radially outwards by an 8-fold symmetric magnetic spectrometer in the center of the figure; they were detected by an array of quartz Cerenkov bars forming the black octagonal structure at the far right. The Canadian group designed and constructed the magnetic field coils with support from NSERC and TRIUMF. U of M students and scientists played a key role in building and operating the electron detector array, which was surrounded by a heavy concrete shielding structure (not shown) during data taking.

Faculty of Science

The weak side of the proton

May 9, 2018 — 
An international team, including several university of Manitoba researchers, have gained new insight into the most elusive of the four fundamental forces in nature

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