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X-ray power and yield measurements at the refurbished Z machine
M C Jones1, D J Ampleford1, M E Cuneo1
1Sandia National Laboratories, Albuquerque, New Mexico 87185, USA.
The Review of Scientific Instruments
|September 1, 2014
Summary
Accurate measurement of x-ray power from Z machine experiments is crucial. Comparing diagnostic techniques revealed that the total power and energy diagnostic provides a more accurate interpretation of z-pinch x-ray emission power.
Area of Science:
- Plasma Physics
- High-Energy-Density Physics
- X-ray Diagnostics
Background:
- The Z machine generates significant x-ray yields and power, necessitating accurate measurement for experimental validation.
- Z-pinch implosion experiments require precise quantification of radiated x-ray energy and power.
Purpose of the Study:
- To advance diagnostic techniques for accurately measuring total radiated x-ray yield and power from Z machine z-pinch experiments.
- To compare the accuracy of different diagnostic methods for inferring z-pinch x-ray power.
Main Methods:
- Development and improvement of x-ray diagnostics.
- Implementation of automated data analysis routines.
- Conducting controlled experiments on the Z machine with consistent load and machine configurations.
Main Results:
- Two common techniques for inferring x-ray power yielded different results: 449 TW (Kimfol filtered x-ray diode) and 323 TW (total power and energy diagnostic).
- Analysis indicated the total power and energy diagnostic provided a more accurate measurement of z-pinch x-ray emission power.
Conclusions:
- The total power and energy diagnostic is a more accurate method for inferring x-ray power in z-pinch experiments.
- Accurate x-ray power determination requires careful consideration of spectral response and field of view for z-pinch sources.
