Volume VII–System Description
OMEGA EP Operations Manual
Page 32 of 35
G6872J1
OMEGA Shot
executive
OMEGA Power
conditioning
executive
OMEGA Laser
drivers
executive
OMEGA
Beamlines
executive
OMEGA
Experimental
executive
OMEGA EP Shot
executive
OMEGA EP Power
conditioning
executive
OMEGA EP Laser
sources
executive
OMEGA EP
Beamlines
executive
OMEGA EP
Experimental
executive
Ethernet
Ethernet
Figure 1.17
The top-level architecture of the Laser Control System, illustrating OMEGA as the senior system when used in joint shot
operations. The lines connecting the executives represent the LLE ethernet. Note that the Power Conditioning Executives
(PCE’s) are required to communicate with each other in order to coordinate charging of the PCU’s. In OMEGA EP, the
Shot Director also controls the PCE, unlike OMEGA.
and to communicate them to the other operators via the subsystem executives. The act of transmitting
this “master template” information marks the transition of the system from the active state to the “pre-
shot” state. The SE also transmits a “shot number,” which is the index to be used when the data from
the intended shot is logged. Each subsystem operator reviews the setup information, signals approval to
the SD, and proceeds to prepare for the shot. When a subsystem has been readied, the operator signals
the SD using a “checklist” button on the executive GUI. The SD then reviews key details of the setup
with the operator before signifying concurrence on the Shot Executive. In the special case of the power
conditioning subsystem, this process consists of the SD developing the power conditioning “template”
that details the on-line/off-line status of the power conditioning units (PCU’s) and the voltage commands
that will be sent to them for the shot.
Once the software and hardware sequencing has proceeded through the issuing of the shot
triggers, the system enters the “post-shot” state, and each of the system elements that has acquired shot-
related data proceeds to log that data to the system database. As the logging is completed, each element
effectively reverts to its “active” state. When all of the elements have completed this process, the system
is formally in the active state and ready to initiate another shot cycle.
1..1 OMEGA EP Control Room
The OMEGA EP Control Room is located on the second floor of the facility, east of the Laser Bay.
Figure 1.18 shows the layout of the operations areas including the Control Room, Operations Anteroom,
and System Scientist areas. Like OMEGA, the view from the Shot Director’s console provides an overview
of the interchangeable operations workstations and the main personnel access door into the Laser Bay.
Summary of Contents for Volume VII-System Description
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