To be present in a secured laser area at ATF, a person must either
have the required laser training, or be continuously escorted by someone
who has such training:
The training consists of an eye exam, BNL general laser safety
lecture, and formal ATF laser familiarization. Untrained personnel
should not be instructed to enter interlocked areas or be escorted into
an area and left unattended. If someone without training must enter a
secured area, they must be continuously escorted, and are considered
spectators, which means they may not perform any work in the area.
At ATF, there are 3 classes of personnel authorized to enter secured
- Experimental operators may secure areas, perform
approved experiments with beams from facility lasers
(YAG + CO2) or FEL beams, and shut down the YAG system
- ATF operators may additionally turn on the YAG
system for linac operation
- Laser operators may perform any tasks with ATF
When entering a secured area, appropriate eye protection must be
Each entry into a secure area has indications as to which wavelengths
are or may be present, so that the appropriate eye protection may be
selected. Beam hazards in the area are regulated by controlled keys, and
it the responsibility of both the keyholder and any other personnel in
the room to maintain awareness of the hazards present.
- Interlocks are safety systems and may not be
defeated under any circumstances:
Any malfunctions must be reported to the C-AD interlock
group. The interlock system has a failsafe design, and
if problems arise which impede operation, only the C-AD
interlock group may modify the interlock system.
- Work which requires laser interlock in common areas
(i.e. experimental hall, FEL room) should be scheduled
ahead of time to avoid conflicts. When an area is
secured, an announcement over the PA system should be
used to notify ATF personnel.
For information contact Marcus Babzien, firstname.lastname@example.org.