Introduction:
blah blah physics stuff.
Safety:
Operations of the EIO involve high voltages, currents, and microwave irradiation, and some heating of waveguides. The high voltage exists both in the powers supply and the EIO connector box. If the EIO is not properly grounded the water lines can carry charge, therefore caution must be taken to properly connect and install the EIO. When dealing with microwaves, caution must be taken to ensure that no microwaves are leaking from any connections and that the outgoing microwaves are being properly terminated. Microwaves can damage skin but eyes are particularly sensitive if not properly connected or routed. The EIO must maintain a distance at least a distance of 2 feet from the magnet to avoid danger.
Mitigation:
With no power to the system, confirm that all connections are secure inside the connector box, primary the ground connections in the bus 2B.
Keep away from the system when powered and maintain 12" from the magnet.
Use RF protective eye wear.
Installation:
Transformer:
The transformer connects to a 120 volt 20 Amp L620 Locking Connector. The transformer job is condition the line and to protect against power surges.
Power Supply:
The power supply, supplies the power, readout, and limited control for the EIO. The power supply is powered by the transformer and delivers power to the connector box.
The current and frequency of the EIO can be tuned slightly via the back of power supply.
The Sub System Interface "Interlock" in the back of the power supply has a D15 connector that shorts pin 12 and 13. This interlock is for the flow monitor connected to the cooling system.
Connector Box:
The Connector Box distribute the power to the EIO and insure the ground connection. The Connector Box is a high voltage zone! Do not touch while powered and insure that the proper connections are secured!
The layout of the connector box is detailed below going left to right of the bus. "A" is the top bus and "B" is the lower bus.
Connection 1A and 1B connects to a safety switch in the top left corner. This switch is to insure the box is closed when powered.
Connection 2A and 2B are connected to the box chassis and ground connection of the EIO. The Ground connection of the EIO are the Brown and Purple wire.
The Purple wire connects to the Body of the EIO, this is located under the cooling inlet Tee #2. The Brown wire is the Ground Wire for the EIO in the same spot as the body.
Connection 4A connects to the collector, Blue Wire, which leads to the top of the EIO. The collector collects the charge from the tube. A voltage drop is created in 4B using two nominal 250 ohm resistors mounted in the lower side of the box.
Connection 7A is the Anode, Red wire, of the EIO which comes from the base of the EIO. 7B delivers power to the anode line via the white and green wire.
Connection 10A is the cathaode, White wire from the base of the EIO, which carries power from 7B brown wire.
There is an auxiliary jumper from 10B to 11B.
There is a diaode from 10B to 12B for the filament.
Connection 12A is the filament which provides the charge in the tube. It is a yellow wire coming from the base of the EIO. It is powered by 12B green wire.
Chiller:
The cooling system provides 21C, 30 psi of water through a flow meter, shown below, to the EIO. The flow is open 95% of the way. The Adjusted nob on the neslab chiller to change the temperature.
The inlet is at inlet is at the top of the EIO and outlet is at the side.
EIO Tube:
The microwave connections are shown below. From the tube, the first attenuator is a splitter that splits into a second attenuator, this reduces the power before the mixer. The mixer mix the signals coming from the tube and frequency counter.
From the splitter, the waveguide leads to a stop or to the target insert. Each connection must be properly tighten to avoid RF leaks. RF leaks can cause skin and eye damage!
The frequency counter is set to Band3, on the input panel you would hit B 3 8 to tune to the proper frequency.
Operations:
Once everything is properly setup and confirmed. Turn on the cooling water from the chiller. Turn on and set the frequency counter. Switch on the Power supply and wait until the yellow light on filament delay turns green. Once green click the button under standby to switch from standby mode to transmit mode. Confirm that the frequency is correct by looking at the frequency counter, it should be around 140 Ghz.
To turn off switch back to standby and turn off the power supply.