Dr. Manfred Bitter and Dr. Kenneth Hill of Princeton Plasma Physics Laboratory (PPPL) helped install a two-crystal-on-one-substrate assembly on the poloidal X-ray crystal spectrometer at the Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP) during a visit starting on February 11, 2012.
The spectrometer allows the measurement of both helium-like and hydrogen-like spectra using a single detector. The new-added capability will provide more information for satellite spectra and the related atomic physics. They also proposed potential future cooperative activities on the deployment and flexible usage of the high-throughput X-ray detector for metal impurity spectra.
Development of X-ray crystal spectrometers for EAST is one of 19 cooperation areas between ASIPP and PPPL. Two spectrometers, which exclusively provide the measurement of ion temperature and plasma rotation velocity, have been developed and installed. And they are running on EAST now. The ensuing collaboration will be focused on improvement of the current spectrometers.
The installment was made during their two-week visit to ASIPP to further cooperation on the development of X-ray crystal spectrometers on EAST. It is their fourth visit to ASIPP since 2007 for ASIPP-PPPL cooperation program.
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