A modified electron multiplier X-ray detector for synchrotron and laser plasma sources

A 129EM electron multiplier has been modified to detect soft x-rays by coating the first dynode with CsI. The prototype detector was tested at the X1a beamline of the NSLS synchrotron source at Brookhaven Lab and at the laser plasma source at the Rutherford Lab. Initial tests have shown that the detector type is suitable for use in soft x-ray microscopy.