In House Diagnostics

In house diagnostics on the Texas Petawatt can be made available to Users. The User will need to request the diagnostics in both the proposal and the six-month Readiness Review.

Diagnostics that can be made available for Petawatt experiments

(Created 2012-05-04; updated 2013-06-17)

Optical/NIR

• Fourier domain interferometer. Self-referencing Michelson interferometer imaged to slit of high resolution spectrometer. Designed for 1omega probe light.
• Hamamatsu C7700 High Dynamic Range Streak camera with S20 photocathode. Sensitive below 900nm wavelength. Temporal resolution of ~3ps.
• Probe line: 10 mJ 1057 nm or up to 3 mJ at 528 nm pulse duration 200 fs to 3 ps, chirped using air compressor.
• 12 bit 640x480 firewire cameras (1-2) and 8 bit 640x480 USB cameras (2-3)
• Apogee Ascent 8050 high resolution, high dynamic range CCD (S/N ~ 3300)
• FLI 1024x1024 CCD with Marconi 16 bit CCD (S/N ~ 7000)
• Horiba Spectromter — operational — Detects light giving 1 d spatial and spectral information. ~30 nm of bandwidth, with increased resolution. Primarily used at 532 nm.
• Calibrated NIST traceable (5% accurate) photodiode: 350-1100 nm; 10 ns rise
• Ophir fiber spectrometer for 900–1300nm
• Questar QM1 and Infinity K2 long working distance microscopes
• For TC1: Backscatter imaging of the target using the focusing parabola and a 10 m spherical mirror, and/or a 8 m focusing lens. Magnification ~ 13 x.

X-Ray/XUV

• Scintillation + PMT X ray detectors (5)
• Von Hamos PET spectrometer assembly for Ti Kalpha
• Compact X-ray pinhole camera
• Filter stack gamma ray spectrometers (2). 2.5 inch active area; Energy range 1keV to 100 MeV with resolution ~ 10% E.
• Grating Spectrograph for 30–70nm
• Calibrated XUV photodiode for 30–70 nm

Ion detection

• Thomson parabola spectrometer. Utilizing image plates. Capable of 4 shots per vacuum cycle. External can for independent pumping of diagnostic. Ion energy range ~.6–20 MeV
• Flange mounted ion spectrometer with MCP or scintillator screen
• Magnetic proton spectrometer utilizing CR39 (prototype). Energy range variable from .1–5 MeV or 1–20 MeV (protons).
• Radiochromic Film (RCF). Scanned using 35mm slide- or flatbed scanner
• CR-39: Ion track detection. Facilities available for NaOH etching.
• Cu stack activation detection of protons, as an alternative to RCF. Digitized using timed image plate exposure and IP scanner.

Electron/positron detection

• (6) Image plate based e+/e- simultaneous detectors. Energy range 0.1–6.5 MeV.