Elliptical X-Ray Spot Measurement
| dc.creator | Richardson, Roger A. | |
| dc.creator | Sampayan, Stephen | |
| dc.creator | Weir, John T. | |
| dc.date | 2000-08-11 | |
| dc.date.accessioned | 2026-07-07T05:44:24Z | |
| dc.date.available | 2026-07-07T05:44:24Z | |
| dc.description | The so-called roll bar measurement uses a heavy metal material, optically thick to x-rays, to form a shadow of the x-ray origination spot. This spot is where an energetic electron beam interacts with a high Z target. The material (the "roll bar") is slightly curved to avoid alignment problems. The roll bar is constructed and positioned so that the x-rays are shadowed in the horizontal and vertical directions, so information is obtained in two dimensions. If a beam profile is assumed (or measured by other means), the equivalent x-ray spot size can be calculated from the x-ray shadow cast by the roll bar. Thus the ellipticity of the beam can be calculated, assuming the ellipse of the x-ray spot is aligned with the roll bar. The data is recorded using a scintillator and gated camera. Data will be presented from measurements using the ETA II induction LINAC. The accuracy of the measurement is checked using small elliptical targets. | |
| dc.description | Postscript file, for LINAC2000 conference | |
| dc.identifier | https://arxiv.org/abs/physics/0008037 | |
| dc.identifier | http://arxiv.org/abs/physics/0008037 | |
| dc.identifier | eConf C000821 (2000) MOc07 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/83627 | |
| dc.subject | Instrumentation and Detectors | |
| dc.title | Elliptical X-Ray Spot Measurement | |
| dc.type | text |