compensator


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compensator

[kom′pənsā′tər]
a device used in radiotherapy to correct for irregularities in body surfaces by providing a differential attenuation of the x-ray beam before it reaches the patient. The result is a more uniform distribution of radiation dose in the tumor. Compensators are generally mounted on the collimator system of a teletherapy unit.
References in periodicals archive ?
Figure 11 shows response to an audio signal of the conventional converter without a frequency compensator.
To obtain better dynamic-performance characteristics, the control piston of the single-stage proportional compensator is supplemented with a bias-control piston.
The auxiliary galvanometer, thermal emf compensator, auxiliary standard-cell dial and the three keys in the circuit with the auxiliary galvanometer, all used only occasio nally, are placed behind the indicators and the main dial.
This would challenge the compensator a great deal, offering a chance to show its full potential due to the increased gas pressure.
When the lift or telescopic function is activated the orifice is closed off and the pump goes to compensator pressure.
It can eliminate residual dispersion over the entire C-band rather than needing separate compensators for each channel.
I've noticed that 12-gauge Winchester Model 12s, Browning A-5s and Remington 870s, fitted with the once popular Poly-Chokes, Lyman's Cutts Compensators, Pachmayr's Power-Pacs and Weaver Chokes, just sit there.
Note that as the compensator spring holding the cam plate at maximum angle, the piston opposes the spring.
There were bull barrels, barrel weights, expansion chamber compensators, compensators with multiple chambers and ports, titanium hammers, composite triggers, mag-loading chutes, guide rods made of steel, titanium and tungsten.
The solution is to put a good recoil compensator on the 10mm 1911.
The pressure compensator is integrated within a single cartridge housing and therefore no additional compensator element or hydrostat is needed.
Compensator Spray is sprayed onto the compensator, choke, muzzle brake, top strap, cylinder face and any-where else that fouling might adhere to.