Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download A new measurement of the anomalous magnetic moment of muon at
Document related concepts
Transcript
A new measurement of the anomalous magnetic moment of muon at Fermilab. Ivan Logashenko on behalf of Muon G-2 Collaboration Budker Institute of Nuclear Physics Novosibirsk State University Novosibirsk, 630090, Russia The anomalous magnetic moment of the muon, one of the most precisely measured quantities in experimental particle physics, allows for a sensitive test of the Standard Model. The most precise measurement of ππ has been done at Brookhaven National Laboratory and the result deviates from the SM expectation by 3-4 standard deviations. A new experiment E989 at Fermilab, now under construction, aims for 4-fold improvement in measurement precision to reach the relative experimental uncertainty of ππ of 140 ppb. The design of experiment follows the concept of the muon storage ring at βmagicβ momentum, invented at CERN-III experiment and improved at BNL. This concept is further developed at Fermilab in nearly all aspects including the muon beam preparation, detectors hardware and electronics, magnet shimming and field measurement. The experiment is now being assembled and the first beam is expected to reach the ring in 2017. Iβll discuss the main design features of the experiment and the current status.
