Users Manual Part 7

Clinical User’s Guide IBA | H-1 |
Volume 1 - Treatment Session
Appendix H
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Glossary of Terms
Absorber
A material or device placed in the beam path to scatter, block, or degrade the beam
energy. Whether the absorber blocks some of the beam energy or all of the beam
energy depends on the amount of the material used. See also: Degrader, First
Scatterer, Second Scatterer.
Accelerator
A device that uses electric or magnetic fields to increase the speed (and thus the
energy) of charged particles. Includes those subsystems between the ion source
injection system and the beginning of the Energy Selection and Beam Transport
System. The Treatment Control System (TRCS) interfaces with the accelerator to
produce a beam at a current given by the dose rate required to treat each patient.
See also: Energy Selection and Beam Transport System, Treatment Control System.
Accelerator Control Unit (ACU)
Located in the PSR. Controls devices and systems associated with the accelerator
(cyclotron). See also: Safety Redundant Control Unit, Treatment Control Unit
Programmable Logic Controller.
adaPT insight
The software program with which the alignment corrections can be calculated that
must be applied to the PPS to ensure a correct alignment of the patient in respect to
isocenter and the coordinate system of the TR.
Adsorption
The process by which a gas or vapor accumulates on the surface of a solid or liquid.
Ampere (A)
The basic unit of electric current in the International System of Units (SI).