Resonant Schottky probe device and method of using same

Abstract

The present invention relates to a resonant Schottky probe device and a method of using the same. The resonant Schottky probe device is characterized by comprising a resonant Schottky probe, wherein the first coupled loop antenna of the resonant Schottky probe is connected to the input end of a power splitter via a low-noise amplifier; the first output end of the power splitter is connected to a first load or a band-pass filter; the band-pass filter is connected to a spectrum analyzer; the second output end of the power splitter is connected to a second load and an adjustable attenuator through a switch; the adjustable attenuator is connected to a low-pass filter through an adjustable phase shifter; the output end of the low-pass filter is connected to the input end of a four-port bidirectional coupler; the coupling end of the four-port bidirectional coupler is connected to a third load and a fourth load; the output end of the four-port bidirectional coupler is connected to the first port of a vector network analyzer or the second coupled loop antenna of the resonant Schottky probe; and the second port of the vector network analyzer is connected to the second coupled loop antenna of the resonant Schottky probe. The resonant Schottky probe device can be widely used in the field of beam diagnosis of heavy ion beam accelerators.

Description

technical field [0001] The invention relates to a resonant Schottky probe device and a using method thereof, and belongs to the field of heavy ion beam (including proton beam) accelerator beam current diagnosis. Background technique [0002] In 1918, the German physicist Walter Schottky first proposed the concept of Schottky noise. In 1972, physicists first observed the proton beam Schottky signal from the ISR machine of the European Nuclear Research Center (CERN). As an important non-intercepting beam diagnosis method, base noise diagnosis is widely used in various accelerator beam measurement systems. The beam current intensity, beam swirl frequency, beam energy, and beam frequency distribution width can be obtained through the Schottky signal. and momentum distribution width and other beam parameters, and the Schottky spectrometer can measure the tune value of the machine, study the stability of the machine, and observe the cooling, accumulation, attenuation and other pro...

AI Technical Summary

Problems solved by technology

Loaded Q of the resonant Schottky probe on the three machines above L The values ​​are limited below 1000, therefore, it cannot meet the demand of single proton measurement in the storage ring (requiring load Q L The value can reach more than 10000)

At the same time, the above-mentioned resonant Schottky probes all have disadvantages such as constant unloaded Q value, unadjustable, and limited sensitivity of Schottky probes.

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