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Initial Dual-Sweep Streak Camera Measurements on the Duke Storage Ring OK-4 UV/Visible FEL

Publication ,  Journal Article
Lumpkin, AH; Yang, BX; Litvinenko, V; Burnham, B; Park, S; Wang, P; Wu, Y
Published in: Nuclear Instruments and Methods in Physics Research Section A
1998

Initial measurements at the Duke storage ring free electron laser (FEL) of both spontaneous emission radiation (SER) from the OK-4 and FEL radiation outcoupled from the oscillator cavity have been done with a dual-sweep streak camera. In the SER case, ANLÕs Hamamatsu C5680 streak camera was used to characterize stored electron-beam bunch lengths versus rf gap voltage and single-bunch current. Electron-beam bunch lengths were observed in a range from 50 to 300 ps (FWHM). Particle beam energies of 270 and 500 MeV in the storage ring (SR) were used with the OK-4 to generate SER from 500 nm to less than 200 nm. Sensitivity to single-bunch, single-turn SER was shown down to&4 lA beam current at j"450 nm. By operating in the synchroscan mode and at bunch currents less than 1 mA, beam orbit length vs. the resonator round-trip time was investigated by detecting the relative arrival time of the second pass outcoupled from the resonator at j+200 nm. These measurements were used in support of Þrst lasing in the UV-visible regime in November 1996. The dual-sweep streak mode was then used to monitor lasing intensity variations on the 1 and 50 ms time scales, to measure a lasing pulse length as short as&3 ps (p) at j"388 nm at low beam current, and to track the orbit length detuning curve.

Duke Scholars

Published In

Nuclear Instruments and Methods in Physics Research Section A

Publication Date

1998

Volume

407

Start / End Page

338 / 342

Related Subject Headings

  • Nuclear & Particles Physics
  • 5106 Nuclear and plasma physics
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

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Lumpkin, A. H., Yang, B. X., Litvinenko, V., Burnham, B., Park, S., Wang, P., & Wu, Y. (1998). Initial Dual-Sweep Streak Camera Measurements on the Duke Storage Ring OK-4 UV/Visible FEL. Nuclear Instruments and Methods in  Physics Research Section A, 407, 338–342.
Lumpkin, A. H., B. X. Yang, V. Litvinenko, B. Burnham, S. Park, P. Wang, and Y. Wu. “Initial Dual-Sweep Streak Camera Measurements on the Duke Storage Ring OK-4 UV/Visible FEL.” Nuclear Instruments and Methods in  Physics Research Section A 407 (1998): 338–42.
Lumpkin AH, Yang BX, Litvinenko V, Burnham B, Park S, Wang P, et al. Initial Dual-Sweep Streak Camera Measurements on the Duke Storage Ring OK-4 UV/Visible FEL. Nuclear Instruments and Methods in  Physics Research Section A. 1998;407:338–42.
Lumpkin, A. H., et al. “Initial Dual-Sweep Streak Camera Measurements on the Duke Storage Ring OK-4 UV/Visible FEL.” Nuclear Instruments and Methods in  Physics Research Section A, vol. 407, 1998, pp. 338–42.
Lumpkin AH, Yang BX, Litvinenko V, Burnham B, Park S, Wang P, Wu Y. Initial Dual-Sweep Streak Camera Measurements on the Duke Storage Ring OK-4 UV/Visible FEL. Nuclear Instruments and Methods in  Physics Research Section A. 1998;407:338–342.

Published In

Nuclear Instruments and Methods in Physics Research Section A

Publication Date

1998

Volume

407

Start / End Page

338 / 342

Related Subject Headings

  • Nuclear & Particles Physics
  • 5106 Nuclear and plasma physics
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences