Neil Armstrong with the Lunar Excursion Module simulator at NASA Langley's Lunar Landing Research Facility. The simulator used a gantry system to cancel all but one-sixth of the simulated craft's weight.
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Neil Armstrong with the Lunar Excursion Module simulator at NASA Langley's Lunar Landing Research Facility. The simulator used a gantry system to cancel all but one-sixth of the simulated craft's weight.

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AD EED LLRF Electronic Engineer
AD EED LLRF Electronic Engineer
SLAC National Accelerator Laboratory is one of 17 Department of Energy (DOE) National Laboratories, and operated by Stanford University on behalf of the DOE. SLAC develops and operates some of the world’s premier science facilities, including the first hard X-ray free-electron laser. Research at SLAC explores the structure and function of matter and the properties of energy, space and time, at…
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Low level Radio Frequency (LLRF)
What is LLRF doing?
Control and maintain the specified phase and amplitude stability of accelerating field in RF cavity during beam traveling. Also maintain the filling stage of the RF pulse.
The stability requirement varies in different accelerators, determined by specific application. e.g. XFEL:0.01% and 0.01° ; SARAF: 0.1% and 0.1° ; SNS: 0.5% and 0.5° ; JPARC: 1% and 1°.
Why need LLRF?
Bec…
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