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An electron tube with a tube voltage of more than 10 kV will generate X-rays. X-ray
generation increases as the voltage and current are increased.
(1) Perform thorough evaluation for X-ray leakage for the equipment used in combination
with this electron tube. Add shielding appropriate for the installation and operating
conditions as required. Checks for X-ray generation must be performed both when high
(X-ray radiation)
frequency output operation is performed and when it is not performed.
(2) If an X-ray shield is already mounted, do not remove or modify it.
(3) Since the amount of X-ray generation may change over time, perform X-ray checks
periodically.
About 0.3-tesla intense magnetic field is used for this electron tube. The ion pump magnet
used in this electron tube generates 0.13-tesla intense magnetic field.
(1) Persons with cardiac pacemakers must not engage in the handling, operation, or
maintenance of this electron tube.
(2) The magnetic field of the focusing coil has been precisely adjusted.
permanent magnets or magnetic objects to come near the electron tube or focusing coil.
(Magnetic field)
They will be attracted by the magnetic field, possibly resulting in personal injury or
damage to the electron tube.
(3) Do not place magnetic cards, hard disk drives, etc. near the electron tube.
Only qualified engineers or persons who have received the specialized training listed below
are permitted to handle this electron tube.
The types of specialized training required are as follows:
(Handling)
Read the operation manual carefully and fully understand the contents before handling the
electron tube.
The following sections of the electron tube become very hot during operation:
(1) Do not touch any of the sections listed above during operation or immediately after
operation. (After operation is stopped, the above parts will remain hot for a while.) The
(Temperature,
high temperature of these sections may cause a burn.
Heat)
(2) In tubes with evaporative cooling, the cooling water in the cooling-water tank is very
hot, reaching temperatures near 100 degrees centigrade.
Be extremely careful when handling it. Before disconnecting tubing, confirm that the
cooling water has cooled sufficiently.
WARNING
CAUTION
(1) High-voltage work
(2) X-ray work
(3) High-frequency work
Surface of the output waveguide : about 60 degrees centigrade
Surface of the focusing magnet : about 60 degrees centigrade
－ 4 －
E3730A OPERATING INSTRUCTIONS
(4) Slinging work
(5) Crane operation
(6) Electrical device work
(Room temperature of 20 degrees centigrade)
Do not allow any
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