ePix: a class of architectures for second generation LCLS cameras

Design and performance of the ePix camera system

“…The ePix x-ray hybrid pixel detectors are built on the ePix platform [3], a modular and easy to adapt platform for particular detection requirements. Each new member of the family utilizes the same serial interface for configuration and slow-control of the ASIC, and only slightly modified interfaces for triggering and data collection.…”

“…The system is developed around the ePix family of hybrid pixel detectors and ASICs [3], with a focus on modularity in mechanical, electrical, and data acquisition interfaces, allowing for a versatile system that can be quickly reconfigured and stacked.…”

“…ePix is a platform based design [3] with multiple variants optimized for different subsets of applications. The ePix detectors will expand the range of applications covered today by the CSPAD detector providing better signal to noise ratios and/or larger dynamic range.…”

Future of ePix detectors for high repetition rate FELs

“…The ePix x-ray hybrid pixel detectors are built on the ePix platform [8,9], which is modular and easy to adapt for particular detection requirements. The current ePix ASICs (ePix100, ePix10k, ePixS) have been initially developed for the LCLS requirements to expand the range of applications covered today by the CSPAD [10,4,5], providing better signal to noise ratios, larger range, reduced pixel size, and an upgrade path to high speed detection (see summary in Table 1).…”

ePix100 camera: Use and applications at LCLS

“…The chip comprises 384 x 352 pixels of 50 μm× 50 μm. Each pixel includes a low noise charge amplifier, a first order non-linear programmable low pass filter, a correlated double sampler, and a sample and hold stage followed by a column buffer [13,14]. The name of the detector is representative of the maximum signal that the frontend can handle before saturation: this is the equivalent charge generated in silicon by 100 8keV photons (ca.…”