dorsal/arxiv
View SchemaOrbit and Optics Improvement by Evaluating the Nonlinear BPM Response in CESR
| Authors | Richard W. Helms, Georg H. Hoffstaetter |
|---|---|
| Categories | |
| ArXiv ID | physics/0406145 |
| URL | https://arxiv.org/abs/physics/0406145 |
| DOI | 10.1103/PhysRevSTAB.8.062802 |
| Journal | Phys.Rev.ST Accel.Beams 8:062802,2005 |
Abstract
We present an improved system for orbit and betatron phase measurement utilizing nonlinear models of BPM pickup response. We first describe the calculation of the BPM pickup signals as nonlinear functions of beam position using Green's reciprocity theorem with a two-dimensional formalism. We then describe the incorporation of these calculations in our beam position measurements by inverting the nonlinear functions, giving us beam position as a function of the pickup signals, and how this is also used to improve our measurement of the betatron phase advance. Measurements are presented comparing this system with the linearized pickup response used historically at CESR.
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"abstract": "We present an improved system for orbit and betatron phase measurement\nutilizing nonlinear models of BPM pickup response. We first describe the\ncalculation of the BPM pickup signals as nonlinear functions of beam position\nusing Green\u0027s reciprocity theorem with a two-dimensional formalism. We then\ndescribe the incorporation of these calculations in our beam position\nmeasurements by inverting the nonlinear functions, giving us beam position as a\nfunction of the pickup signals, and how this is also used to improve our\nmeasurement of the betatron phase advance. Measurements are presented comparing\nthis system with the linearized pickup response used historically at CESR.",
"arxiv_id": "physics/0406145",
"authors": [
"Richard W. Helms",
"Georg H. Hoffstaetter"
],
"categories": [
"physics.acc-ph"
],
"doi": "10.1103/PhysRevSTAB.8.062802",
"journal_ref": "Phys.Rev.ST Accel.Beams 8:062802,2005",
"title": "Orbit and Optics Improvement by Evaluating the Nonlinear BPM Response in CESR",
"url": "https://arxiv.org/abs/physics/0406145"
},
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