Jungfrau
The Jungfrau is a fast, large dynamic-range X-ray camera deployed at LCLS for hard to tender X-ray in-air applications since run 15.
The in-air camera dimensions are approximately 38 x 9 x 10 cm3 (38 x 13 x 10 cm3) including connectors and tubing for the 0.5 M (1 M).
Beginning in Run18, the CSPAD2.3M in the CXI/SC1 chamber will be replaced by the Jungfrau 4M detector, which will allow for higher signal and spatial resolution, as well as a larger dynamic range for hard X-ray experiments. The detector is made up of 8 modules arranged around a 9mm beamhole.
Jungfrau characteristics and measured performance
Specifications | Jungfrau 0.5M | Jungfrau 1M | Jungfrau 4M (in CXI) |
|---|---|---|---|
Number of modules | 1 | 2 | 8 |
Number of pixels per module | 1024 x 512 | 1024 x 512 | 1024 x 512 |
Application | Air only | Air only | Vacuum only |
Pixel size (μm) | 75 | 75 | 75 |
Noise r.m.s. (eV) | 180-270 | 180-270 | 180-270 |
Max signal (8 keV photons equivalent) | 15,000 | 15,000 | 15,000 |
Frame rate (Hz) | up to 2k | up to 2k | up to 2k |
Sensor thickness (μm) | 320 | 320 | 320 |
Weight (kg) | 2-3 | 2-3 | 2-3 |
