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Linac test 03.03.23
00002: power supply
Step | Step description | Expected result | Result |
Precondition | System is Off | ||
Switch On the system | turn on the power supply (P1) | Get continuous power (6 V) | positive |
Switch Off the system | turn Off the power supply (P1) | Continuous power stops | positive |
Postcondition | System is Off |
00003: Get electrons
Step | Step description | Expected Result | Result |
Precondition | System is Off | ||
Switch On the pump | turn On the pump | 95% vacuum | positive |
Switch on the power supply | Turn on the power supply | Get continuous power (6 V) | positive |
Burning the Tungsten ( or use a electron Gun) | Burn the Tungsten by supplying it with 6 V power |
Get electrons around the Tungsten ( the lamp will light) |
negative (the lamp turned off) but we got electrons because of HV |
Switch Off the power supply | turn Off the power supply |
the lamp will turn Off |
positive |
Switch Off the pump | turn Off the pump |
the pump stops pulling out the air |
positive |
Postcondition | System is Off |
00004:High voltage
Step | Step description | Expected Result | Result |
Precondition | System is Off | ||
Switch On the system | Turn On the HV | Get continuous power ( between 5 Kv and 60 Kv ) | positive |
Switch Off the system | Turn Off the HV | Continuous power stops | positive |
Postcondition | System is Off |
00005: Acceleration of electrons
Step | Step description | Expected Result | Result |
Precondition | System is Off | ||
Switch On the pump | turn On the pump | 95% vacuum | positive |
Switch On the power supply | turn On the power supply | Get continuous power (6 V) | positive |
Switch on the High voltage | Turn on the HV power supply | Get continuous power ( between 5 Kv and 60 Kv ) | positive |
electrons acceleration | Connecting the high voltage to the anode and the cathode (while controlling the change of force until we see the passage of electrons and their acceleration) | Electrons leaving the anode accelerate towards the cathode and collide with it | positive ( light appears ) |
Switch Off the HV | Turn Off The HV power supply | Electrons acceleration Stop | positive |
Switch Off the power supply | turn Off the power supply | the lamp will turn Off | positive |
Switch Off the pump | Turn Off the pump | the pump stops pulling out the air | positive |
Postcondition | System is Off |
Analysis of the test results:
With the pump running:
we used a lamp wrapped in its glass.
Then we supplied the lamp with a power of 6 V; it lit up for a bit and then burned out. which indicates that we don't get a continuous exit of the electrons through the heater (6 V) .
After this stage, we turned on the high voltage, and we saw a violet light path, which indicates that we get electrons through the HV, and these electrons are moving.
But this path didn't complete its way towards the anode, its path ended at the cylinder. Sometimes it hits the opening of the cylinder, and sometimes it crosses the cylinder from its beginning, then it deviates and hits the outer part of the cylinder.
The lamp:
The cylinder in order to center the path of electrons:
For safety:
the outer part of the cylinder: