Sydor Keck Pixel Array Detector (SK-PAD)
The SK-PAD is a single photon sensitive, wide dynamic range, low noise, direct imaging detector. With these qualities, the SKPAD meets the demanding temporal resolution requirements of research experiments at modern light sources.
SK-PAD can acquire up to 8 sequential frames at MHz rates with 100 Hz readout speed, making it ideally suited for irreversible or single shot experiments. In addition, each of the 8 frames can be individually configured and triggered.
The SK-PAD is composed of eight 1x2 submodules of 256x128 pixels and a pixel pitch of 150 µm. The resulting standard 2x4 detector array is a 512x512 format; custom array sizes may be available upon request. Sensor materials are available in Si (2-20 keV) or CdTe (20-00 keV). With the Si sensor, the SK-PAD has a dynamic range of 8x103 photons/ pixel/frame at 8 keV.
Detector read noise is < 0.5 photons/pixel and dark current is 2 photons/pixel/second at 8 keV x-rays. A Peltier cooling system is included with the SK-PAD system to minimize dark current. Cooling and other detector functions are controlled through an ethernet connection to the user PC.
Features:
The fastest imaging at up to 9.1 MHz with options for Si or CdTe for maximum QE
Acquire up to 8 individually triggered images, ideal for single shot experiments, shock, and EOS
Dynamic range of 8x103 photons/ pixel/frame
Tilable design for unique geometry requirements across 80 mm, or larger upon request
Applications:
Material in extreme conditions with X-ray and/or laser probes
Diamond Anvil experiments with X-ray density probe
Shock Physics and EOS phase capture
Single modules for tabletop microscopic analysis
Product Specifications
Specifications
Sensor Material:
500 µm thick Si or 750 µm CdTe Sensor Format:
Eight 1x2 submodules of 256x128 pixels. Sydor's standard 2x4 detector array is a 512x512 format Pixel Pitch:
150 µm Dynamic Range:
8000 @ 8 keV photons Read Noise:
~0.5 photons/pixel @ 8 keV Dark Current:
2 photons/pixel/second @ 8 keV
Frame Rate (up to 8 frames):
Up to 10 MHz, see timing diagram
Minimum Frame Time:
110 ns
Maximum Continuous Frame Rate:
Up to 1 KHz
Spectral Range:
2-20 keV (Si) or 20-100 (CdTe)
Cooling Method:
Peltier cooler with water waste heat removal
Physical Dimensions:
200x220x300 mm, 10 kg
User Interface:
EPICS and Proprietary GUI providing images in RAW format
QE curve for Si or CdTe options
Keck Timing Modes and Examples
Sample Experiment: The user wants to acquire data at the fastest possible rates. All 8 exposures are triggered with the minimum 110 ns between frames. After 8 frames are acquired, the data is readout from the chip and a new set of 8 frames can be initiated.
Sample Experiment: The fastest rates are required to resolve the very dynamic events at the start of a process. The first three frames are triggered with 110 ns frame times. To extend the total available acquisition time the following frames are triggered with progressively longer frame times (500 ns, 1 µs and 100 µs). The data is read out and the sequence of 8 frames can restart.
Sample Experiment: A more standard experiment is planned where constant acquisition is required at ~1 kHz. The same detector can be utilized and setup to acquire 1 internal frame that is readout directly after acquisition, resulting in a continuous frame rate of 1 kHz.
Note: Timing diagrams provided are for example purposes only. Noise levels and other performance factors may change depending on rates and triggering configuration selected.
商品属性 [Dark current] 2 photons/pixel/second @ 8 keV [CCD format] Eight 1x2 submodules of 256x128 pixels. Standard 2x4 detector array is a 512x512 format