Users Manual Part 7

Clinical User’s Guide IBA | H-9|
Volume 1 - Treatment Session
Glossary of Terms |
Graphical User Interface (GUI)
See also: User Interface.
Half-wave Rectifier
A rectifier using only one-half of each cycle to change ac into pulsating dc.
Hand-Pendant (HP)
A Hardware hand-pendant is present in each TR to enable positioning any of the
devices that may require positioning.
See also: Patient Positioning Device, Treatment Room, Gantry, Patient Positioning
System, Nozzle.
Heating, Ventilation, & Air Conditioning (HVAC)
A generic description of the heating, ventilation, and air conditioning system installed
in the PTS. See also: Proton Therapy System.
High-Voltage (HV)
Having, carrying, or operating under a high-voltage.
Horizontal Steering Magnet
A small, separate, air cooled, dipole magnet deflecting the beam in the horizontal
plane providing minor trajectory adjustment. The amplitude of deflection is relatively
small compared to a full-sized dipole magnet. See also: Trim Coil.
Input/output (I/O)
An abbreviation used on PTS electrical and computer equipment.
Insulated Gate Bipolar Transistor (IGBT)
An electrical device used in the PTS power supplies. See also: Power Supply.
Intermediate Power Amplifier (IMPA)
A component of the radio frequency system located in the Power Supply Room (PSR)
upstream of the Final Power Amplifier. See also: Final Power Amplifier.
International Standards Organization (ISO)
A worldwide federation of national standards bodies promoting standardization with
a view to facilitating the international exchange of goods and services.
Ion Source (IS)
Inserted through the bottom of the cyclotron. Delivers ions to the accelerator
(cyclotron) enabling beam production. See also: Accelerator.