Resolution limitations and optimization of the LLNL streak camera focus

Conference · Tue Sep 01 04:00:00 EDT 1987

OSTI ID:5949703

Lerche, R A; Griffith, R L

The RCA C73435 image tube is biased at voltages far from its original design in the LLNL ultrafast (10 ps) streak camera. Its output resolution at streak camera operating potentials has been measured as a function of input slit width, incident-light wavelength, and focus-grid voltage. The temporal resolution is insensitive to focus-grid voltage for a narrow (100 ..mu..m) input slit, but is very sensitive to focus-grid voltage for a wide (2 mm) input slit. At the optimum wide-slit focus voltage, temporal resolution is insensitive to slit width. Spatial resolution is nearly independent of focus-grid voltage for values that give good temporal resolution. Both temporal and spatial resolution depend on the incident-light wavelength. Data for 1.06-..mu..m light show significantly better focusing than for 0.53-..mu..m light. Streak camera operation is simulated with a computer program that calculates photoelectron trajectories. Electron ray tracing describes all of the observed effects of slit width, incident-light wavelength, and focus-grid voltage on output resolution. 7 refs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5949703
• Report Number(s): UCRL-96519; CONF-8708110-23; ON: DE88001633
• Country of Publication: United States
• Language: English

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CAMERAS
CATHODES
ELECTRIC POTENTIAL
ELECTRODES
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
FOCUSING
LEPTONS
MEASURING INSTRUMENTS
OPTIMIZATION
PHOTOCATHODES
RADIATION DETECTORS
RESOLUTION
SPATIAL RESOLUTION
STREAK CAMERAS
TIME RESOLUTION
TIMING PROPERTIES
TRAJECTORIES