Search results for "Race track"
showing 4 items of 4 documents
A spin rotator for producing a longitudinally polarized electron beam with MAMI
1993
Abstract The design and performance characteristics of a full 4 π-space spin rotator for 100 keV electrons are described. The spin rotator was developed as part of the acceleration scheme for polarized electrons in the MAINZ race track microtron cascade MAMI [1]. It allows to orientate the polarization vector in any direction before injection. Thus it is possible to optimize the longitudinal polarization component, required for experiments with polarized high energy electrons, at target position. With this scheme various experimental halls can be supplied with longitudinally polarized electrons in the full energy range of MAMI between 180 and 855 MeV.
Beam blowup in race track microtrons
1979
Abstract Beam blowup of the special kind to be expected with race track microtrons is investigated using a simplified model. A worst case analytical estimation formula is briefly derived. Further, the results of a large number of numerical computations are communicated and it is tried to compress these results to a simple empirical estimation formula. Finally, microwave measurements of BBU shunt impedances and some methods to overcome BBU are briefly discussed.
The design of a cascaded 800 MeV normal conducting C.W. race track microtron
1976
Abstract A c.w. electron accelerator of 820 MeV maximum output energy at 100 μ A beam current is proposed to make possible a large variety of coincidence experiments with energy electrons and photons as a future possibility of new, interesting experiments. It consists of a preaccelerator and 3 cascaded race track microtons using normal conducting rf structures. The design of this accelerator, based on detailed computational investigations of its beam dynamics and some experimental studies, is communicated and partly discussed in this paper.
Intra-visual conflict in visually induced motion sickness
2011
Abstract Motion sickness (MS) can be a debilitating side-effect not just of sea travel, but also when immersed in video games or virtual environments (visually induced MS). To explore the impact of visual display parameters on motion sickness, we presented footage taken on an automobile race track to different groups of observers during three experiments. In Experiment 1, one group watched the movie wearing a head-mounted display (HMD) and a second group looked at a large projection screen with unrestricted view. Resolution and visual angle were equated. In contrast to common assumption, the projection screen produced significantly higher motion sickness scores than the HMD. To understand t…