Users Manual Part 6

Clinical User’s Guide
IBA | 44-1 |
Volume 1 - Treatment Session
Chapter 44
• • • • • •
Beam Scheduling Principles
Beam generated by the cyclotron can be allocated to any TR, one TR at a time.
Therefore, beam requests coming from different TRs must be scheduled. Once
beam usage is no longer needed in a given TR, the beam must be released before it
can be allocated to another TR.
Beam scheduling can be performed manually by the Accelerator Operator or
automatically by the Beam Scheduler. The principle itself is known as Automatic
Beam Scheduling (ABS) .
ABS Automatic Mode
When ABS is working in Automatic mode, the beam request is generated when the
RTT in the TR clicks the Normal priority request or High priority request button from
the B
EAM PANEL of the EQUIPMENT PREPARATION SCREEN. All beam requests end up in
the beam request queue, without Accelerator Operator intervention.
Each beam request has a given priority corresponding to the Beam Request button
(High or Normal) that the RTT has clicked. Any request made in Service mode from
a TR also appears in the queue.
Beam is automatically allocated based on the priority and the time stamp of the
request. The Accelerator Operator in the MCR can overrule this automatic allocation.
ABS Manual Mode
When ABS is working in Manual mode, the RTT in the TR sends a beam request
from the B
EAM PANEL of the EQUIPMENT PREPARATION SCREEN to the Accelerator
Operator in the MCR. The Accelerator Operator subsequently allocates the beam,
based on the priority.