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and can result in blindness or other injury. Personnel must be fully protected from the microwave energy
which radiates from this device. All input and output RF connections, waveguide flanges, and gaskets must
be RF leak proof and properly engaged. Never operate this device without a microwave-energy-absorbing
load. Personnel must be prevented from looking into open waveguide or antennas while this device is
energized. Equipment must be designed to protect all the personnel from the hazards. The label and caution
notices must be provided on the equipment and tin the manuals warning clearly of these hazards.
5.3.4 Protecting instrument
The following protection interlock is necessary to protect the klystron tube from change of the power-supply
voltage, breakdown of the focusing magnet and the cooling system, and unexpected abnormal circumstances.
Item
Cathode warm-up time
Oil level
Ion pump current
Water-coolant Flow
（Collector and body）
Inlet coolant Temperature
Heater Voltage
Heater Current
Beam Voltage
Beam Current
Beam Inverse Voltage
Load Waveguide Arc
Focusing magnet current
Focusing magnet voltage
Water-coolant flow for focusing
magnet
Inlet coolant temperature for
focusing magnet
Load waveguide pressure
Protection action value
Within specified time
Oil surface is under the specified surface
level
More than a specified value（Regular
operation value plus 2μA）
Less than minimum ratings
Maximum rate more than（40℃）
Out of the specified rate ±5% for each
klystron
Out of the specified rate ±5% for each
klystron
Exceed the normal value plus 5% or the
maximum rating
Exceed the normal value plus 10% or the
maximum rating.
Exceed the rated value（100kV）
Discharge within waveguide
Out of the specified rate ±5% for each
klystron
Out of the normal value ±10%
Less than the specified value
Less than the specified value
Out of rated value
－ 14 －
E3730A OPERATING INSTRUCTIONS
Point of action
No application by high
voltage
Beam high voltage
application paused
Beam high voltage
application paused
Heater high voltage
application paused
Bean high voltage
application paused
Heater high voltage
application paused
Beam high voltage
application paused
Beam high voltage
application paused
Beam high voltage
application paused
Beam high voltage
application paused
Beam high voltage
application paused
Beam high voltage
application paused
RF application paused
Beam high voltage
application paused
Beam high voltage
application paused
Beam high voltage
application paused
Power supply for
magnet paused
Beam high voltage
application paused
Power supply for
magnet paused
RF application paused
Action Speed
－
Medium
High
Medium
Medium
Medium
Medium
High
High
High
High
High
High
Medium
Medium
High
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