Sydor Mixed Mode Pixel Array Detector (SMM-PAD)
The SMM-PAD is a single photon sensitive, direct imaging detector with unprecedented full well capacity and dynamic range, an order of magnitude higher than current active gain detectors. These properties make SMM-PAD ideally suited for applications like ptychography and diffraction.
SMM-PAD’s wide dynamic range of 5x108 photons/pixel/frame is a result of the unique “mixed-mode” capabilities of the detector, taking advantage of both analog and digital data management. In-pixel electronics sense when a pixel is nearing saturation, removes the charge, and simultaneously digitally stores the number of times this occurs during each exposure. Unlike simpler photon counting detectors, there is no dead time.
Each detector head is composed of eight 256x128 pixel submodules with a pixel pitch of 150 µm. The resulting standard SMM-PAD design is arranged in a 2x4 submodule, 512x512 pixel array. Submodules are available with Si (2-20 keV) or CdTe (20-100 keV) sensors. Custom arrays may be available upon request.
The SMM-PAD has a minimum inter-frame time of 0.86 ms, and frame rates of 1 kHz with a sustained count rate of 4x108 photons/pixel/s. At 8 keV, read noise is ~0.5 photons/ pixel and dark current of 2 photons/pixel/second. A Peltier cooling system is integrated with the SMM-PAD to maintain low dark current. Cooling and general detector functions are controlled via ethernet connection to the PC based user interface.
Features:
5x108 photons/pixel single frame dynamic range or an equivalent sustained count rate of 4x108 photons/ pixel/second (for 1 s integration time)
Single photon sensitivity with Si sensor from 2-20 keV or CdTe options for higher energies
No dead time as seen in photon counting detectors
Tileable design for unique configuration requirements
Applications:
Ptychography
Diffraction
X-ray Photon Correlation Spectroscopy (XPCS)
Pink beam or diffraction limited source experiments
Specifications
Sensor Material:
500 µm thick Si or 750 µm CdTe
Sensor Format:
Eight 1x2 submodules of 256x128 pixels. Standard 2x4 detector array is a 512x512 format
Pixel Pitch:
150 µm
Single Frame Dynamic Range:
5 x108 photons/pixel @ 8 keV photons at 1 kHz
Sustained Count Rate:
4 x 109 photons/pixel/second (i.e. given 1 s integration time)
Read Noise:
~0.5 photons/pixel @ 8 keV
Dark Current:
2 photons/pixel/second @ 8 keV
Frame Rate:
Up to 1.1 kHz
Spectral Range:
2-20 keV (Si sensor) or 10-100 (CdTe sensor)
Cooling Method:
Peltier cooler with water waste heat removal
Physical Dimensions:
200x220x300 mm, 10 kg for 512x512 design
User Interface:
EPICS and Proprietary GUI providing images in RAW format
QE curve for Si or CdTe options
商品属性 [CCD format] Eight 1x2 submodules of 256x128 pixels. Standard 2x4 detector array is a 512x512 format [Dark current] 2 photons/pixel/second @ 8 keV