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.


Table 1. 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

Download Jungfrau specifications sheet