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Time domain analysis of coherent terahertz synchrotron radiation
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View: Figures


Image of FIG. 1.
FIG. 1.

Experimental setup and simplified geometry of the diagnostic port for terahertz radiation (1: cryostat with HEB, 2: bias voltage supply, 3: bias-tee, 4: microwave amplifier, and 5: sampling oscilloscope).

Image of FIG. 2.
FIG. 2.

Example of a fill pattern measured with a HEB at terahertz frequencies and with an APD at x-ray energies. The total current in the ring is and the maximum current in a bunch is .

Image of FIG. 3.
FIG. 3.

Terahertz signal as a function of the bunch current. The transition from stable to bursting CSR occurs at about /bunch. The solid line is a fit of Eq. (1) while the dashed line is a guide for the eye.

Image of FIG. 4.
FIG. 4.

CSR pulse from a single electron bunch with current ( corresponding to a rms bunch length of ).

Image of FIG. 5.
FIG. 5.

Spectrum of CSR measured with a HEB and a Fourier transform spectrometer which was placed in front of mirror M3 (see Fig. 1). The inset shows the corresponding interferogram. Note that the maximum mirror displacement corresponds to a pulse length larger than .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Time domain analysis of coherent terahertz synchrotron radiation