2.0 System Scope, Topology & Modulator Package Design:

2.1 System Scope: The modulator system is to include prime power supplies (480 VAC mains), redundant switch modules, control/interlock system, and fractional-turn transformer in an oil tank with integrated klystron socket.

2.2 Modulator Topology: Inductive adder/fractional-turn transformer topology incorporating only solid state switching.

2.3 Switch modules: Transformer primary to be powered by parallel, redundant modules. Module output <4 kV.

2.4 High voltage insulation: Ambient air or solid dielectrics will provide all electrical insulation except for the transformer and klystron socket which shall use mineral oil.

2.5 Transformer Oil Containment: In the unlikely event of any tank oil leakage, the proposed modulator shall provide a secondary container tank to be mounted under the modulator frame, with sufficient volume, so as act as a full catch basin, and prevent any oil escape from the system.

2.6 Cooling: LCW (Low Conductivity Water) and/or ambient air (<30 ºC)

2.7 Klystron Heater: Transformer shall incorporate bifilar leads to power klystron cathode heater, 0.5 kW max.

2.8 Current and Voltage Diagnostics: Calibrated diagnostics to measure the klystron current and voltage are to be incorporated into the oil tank.

2.9 Operational Experience: Manufacturer must be able to demonstrate prior, successful experience with design, construction and installation of modulators to power a SLAC XL klystron.

3.0 Operational Parameters: The proposed modulator shall have the following operational output parameters.

Pulse Output:
3.1 Peak Power: 158 MW
3.2 Average Power: 55 KW
3.3 Voltage: 450 KV
3.4 Current: 350 A
3.5 Pulse Repetition Rate: 120 Hz
3.6 Pulse Width: 1.0 µs
3.7 Flatness: 0.5%
3.8 Rate of Rise: 300/420 kV/ µs (min/max)
3.9 Amplitude Stability: <50 ppm (rms)
3.10 Trig Delay: 1.2 µs
3.11 Pulse/Pulse time jitter:<10 ns (rms)
3.12 Pulse width time jitter: <10 ns (rms)

Filament Output:
3.13 Max Voltage DC: 20 VDC
3.14 Max Current DC: 30 ADC
3.15 Current Regulation: <1%

4.0 Modulator Power Efficiency (Wall Plug to Modulator Output):
The proposed modulator shall demonstrate, at the operational parameters as stated in paragraph 3.0 above, an overall power efficiency of < 70%.

THIS IS A SOURCES SOUGHT ONLY AND IS NOT A REQUEST FOR QUOTE OR OFFER TO BUY. VENDORS INTERESTED IN BEING CONSIDERED AS A POTENTIAL SOURCE SHOULD IDENTIFY THEMSELVES AS AN "INTERESTED PARTY" VIA THE FBO PORTAL. DO NOT CONTACT THE SUBCONTRACT ADMINISTRATOR.  ANY PROPOSAL THAT IS SENT AS A RESULT OF THIS POSTING WILL BE DISQUALIFIED UPON RECEIPT.  TECHNICAL QUESTIONS WILL BE ADDRESSED.