Here is my prelim list which gives kind of a broad outline of some of the design issues for WB-7x. This is a strictly first pass effort and is as of yet no where near exhaustive. If you have comments post them.
Three Alternative Grid supplies
Grid Power 0 - 70KV ~10V steps Capable of modulation @ 10KHz (+/- 5KVpk) for power control 25A continuous. 50A for 3 seconds at reduced or zero modulation due to core saturation (if transformer modulation is used).
Grid Power 0 - 35KV ~5V steps Capable of modulation @ 10KHz (+/- 5KVpk) for reactor power control. 15A continuous. 30A for 3 seconds at reduced or zero modulation due to core saturation (if transformer modulation is used).
Grid Power 0 - 17.5KV ~2.5V steps Capable of modulation @ 10KHz (+/- 2.5KVpk) for reactor power control. 6A continuous. 12A for 3 seconds at reduced or zero modulation due to core saturation (if transformer modulation is used).
PID control designed to keep the Modulation Transformer (if used) unsaturated. Or can be operated open loop.
Ripple less than 100 V at operating current. (that is going to be tough except at high frequencies). Ripple is bad because it spreads the energy.
Magnet power Isolated from Ground to 100 KV
Vacuum Pump Power
Electron gun filament supplies
Electron gun power supplies
Electron gun grid control
24 VDC isolated to 100 KV for the high power control bus rqmts. 1 KW (could be less)
120/240VAC 60Hz 10 KW .6 PF isolated to 100 KV for misc. reactor rqmts
Reaction Control Points:
Magnetic Grid Voltage
D-D pressure (will be used to control H in pB11 reaction)
D-D valving (will be used to control H in pB11 reaction)
Vacuum Pump power control
B11 injection control
Electron gun controls
Residual Gas Analyzer
Data Collection and control computer
Coil outlet temperatures
Coil LN2 manifold temperature
Coil LN2 flow rates
Radiation survey instruments
Calibration/Quality control materials/data:
Lab Clock for event synchronization
Coil Energy Safety
Control Bus Issues
I like CAN bus for control however, I'm open to suggestions.
No wireless. No crash buses i.e. Ethernet (except for data collection).
Stuff that has to fail safe will be on CAN.
Update: 28 June 007 2031z
Labratory Infrastructure added
Update: 30 June 007 0536z
Electron gun stuff added