Electromagnetic pulse protective shielding for digital x-ray detectors.

Area of Science:

• High-energy physics
• X-ray imaging technology
• Electromagnetic pulse (EMP) shielding

Background:

• Laser-driven x-ray backlighting images dynamic processes like shock waves.
• Direct detecting x-ray detectors are sensitive to electromagnetic interference.
• Pump-probe experiments at high-power laser facilities generate extreme electromagnetic pulses.

Purpose of the Study:

• To evaluate the feasibility of operating the JUNGFRAU detector in extreme electromagnetic pulse environments.
• To develop and test an electromagnetic pulse-protective housing for the JUNGFRAU detector.
• To ensure reliable operation of digital x-ray detectors in high-energy laser experiments.

Main Methods:

• Designed and implemented an electromagnetic pulse-protective housing for the JUNGFRAU detector.
• Optimized the housing for pump-probe experiments at the PHELIX facility.
• Utilized a beryllium x-ray entrance window with high transmission (94% at 8 keV).
• Measured electromagnetic field damping within the housing across a wide frequency range (100 MHz to 5 GHz).

Main Results:

• The protective housing demonstrated high x-ray transmission, crucial for imaging.
• Relative electromagnetic field damping exceeded 1000 on average within the specified frequency range.
• The JUNGFRAU detector successfully operated within the shielded environment.

Conclusions:

• The developed electromagnetic pulse-protective housing enables the operation of the JUNGFRAU detector in extreme electromagnetic pulse environments.
• This technology is vital for advancing pump-probe experiments using laser-driven x-ray backlighting.
• Digital x-ray detectors can reliably function in challenging electromagnetic conditions.