A wire beam position monitor extracts the photo-current from a thin metallic wire as it is scanned across the beam. This gives a profile of the beam power distribution parallel to the axis of displacement of the wire. Two wires perpendicular to each other (“crossed wires”) can also be scanned on a single frame to provide additional information on beam shape.
Information from the monitor can be incorporated into a feedback system to the synchrotron ring steering magnets to control beam position, angle or provide information on beam stability.
[/vc_column_text]| Maximum beam width | 115.0mm or 70mm (single wire only) 40.0mm (cross wire) |
| Wire diameter | 50μm |
| Actuator | Stepper motor |
| Position indicator | Linear encoder |
| Parallelism | <5mm/m |
| Wire material | Tungsten |
| Regularity of linear speed | ±5% (over 40mm of travel) |
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| Wire beam position monitor, single wire 70mm | DWM0010 |
| Wire beam position monitor, single wire 115mm | DWM0011 |
| Wire beam position monitor, cross wire 40mm | DWM0012 |
| UHV vessel to suite wire beam position monitor | DWM0020 |
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