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determination_of_angles_and_momentum [2013/10/17 21:37] pereira |
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===== Ion-optic coordinates in the S800 ===== | ===== Ion-optic coordinates in the S800 ===== | ||
- | The optical coordinates used in the S800 are described in relation to a central trajectory passing through the center of the S800 magnets, and with the reference momentum given by // | + | The optical coordinates used in the S800 are described in relation to a central trajectory passing through the center of the S800 magnets, and with the reference momentum given by // |
- | The coordinates used in ion-optics are the longitudinal distance //z// along the reference path, and the transversal distances //x// and //y// (perpendicular to z) with respect to the reference trajectory in the dispersive and non-dispersive directions, respectively((Note that since the S800 bending dipoles are oriented vertically, the coordinate //x// corresponds to the vertical direction, while //y// refers to the horizontal direction)). The dispersive and non-dispersive angles a and b are referred with respect to the z axis in the xz-plane and yz-plane, respectively. The momentum coordinate is defined according to the equation + 1 = p / p0 where p is the momentum of the particle. The energy coordinate d is defined as d= E-E0)/E0, where E is the energy of the particle and E0 is the energy equivalent to p0. | + | The coordinates used in ion-optics are the longitudinal distance //z// along the reference path, and the transversal distances //x// and //y// (perpendicular to z) with respect to the reference trajectory in the dispersive and non-dispersive directions, respectively. ((Note that since the S800 bending dipoles are oriented vertically, the coordinate //x// corresponds to the vertical direction, while //y// refers to the horizontal direction)) The dispersive and non-dispersive angles a and b are referred with respect to the z axis in the xz-plane and yz-plane, respectively. The momentum coordinate is defined according to the equation + 1 = p / p0 where p is the momentum of the particle. The energy coordinate d is defined as d= E-E0)/E0, where E is the energy of the particle and E0 is the energy equivalent to p0. |
Reconstruction method | Reconstruction method |