Measurement of Sharpness and Noise Characteristics of X-ray Image Intensifiers

1975 ◽  
Vol 22 (4) ◽  
pp. 301-315 ◽  
Author(s):  
J.A.J. van Leunen ◽  
J.C. Pennings
Keyword(s):  
X Ray ◽  
Noise Characteristics ◽  
Image Intensifiers

Background Generation at Input Screens of X-Ray Image Intensifiers

1985 ◽  
Vol 24 (Part 1, No. 8) ◽  
pp. 1087-1094
Author(s):  
Motohisa Tsuda ◽  
Yutaro Kimura
Keyword(s):  
X Ray ◽  
Image Intensifiers

scholarly journals Innovative Techniques for X-ray Calorimetry

1990 ◽  
Vol 115 ◽  
pp. 357-360
Author(s):  
S. Labov ◽  
E. Silver ◽  
D. Landis ◽  
N. Madden ◽  
F. Goulding ◽  
...  
Keyword(s):  
Detection System ◽  
Light Emitting Diode ◽  
Thermal Response ◽  
Diagnostic Procedures ◽  
Resolving Power ◽  
Infrared Light ◽  
Temperature Control System ◽  
Thermal Detector ◽  
X Ray ◽  
Noise Characteristics

AbstractIn our x-ray calorimetry effort, we have developed several techniques which may be helpful to other groups working in this field. We are studying several different monolithic and composite calorimeter designs. In our readout configuration, the preamplifier circuit employs negative voltage feedback which allows us to accurately measure the temporal profile of the thermal pulse produced by an x-ray absorbed in a micro-calorimeter. Rise times of less than two microseconds have been observed in monolithic devices operating at .3 K. Furthermore, the feedback preamplifier can be configured for either positive or negative electro-thermal feedback. This preamplifier system is followed by an analog pulse shaping amplifier with a frequency response that can be adjusted to yield the maximum signal to noise ratio for a given thermal response of the calorimeter. In addition, we have developed several diagnostic procedures which have been useful in determining the operating and noise characteristics of our devices. These include an infrared light-emitting diode which flashes a discrete amount of energy on to the calorimeter, and a capacitively coupled test input to the preamplifier which allows us to directly determine the total noise in the thermal detection system. Finally, we are developing an adiabatic demagnetization refrigerator with a temperature control system that is designed to stabilize the 0.1 K cold stage to better than 8 μK. This is required for a resistive thermal detector with resolving power of 1000.

The influence of contact material and its fabrication on X-ray HR-GaAs:Cr sensor noise characteristics

2019 ◽  
Vol 14 (01) ◽  
pp. C01026-C01026 ◽  
Author(s):  
I. Chsherbakov ◽  
P. Chsherbakov ◽  
I. Kolesnikova ◽  
A. Lozinskaya ◽  
T. Mihaylov ◽  
...  
Keyword(s):  
Contact Material ◽  
Sensor Noise ◽  
X Ray ◽  
Noise Characteristics

X-ray image intensifiers with digital output

1998 ◽  
Vol 32 (6) ◽  
pp. 316-319
Author(s):  
Yu. A. Veip ◽  
A. I. Mazurov ◽  
M. B. Elinson
Keyword(s):  
Digital Output ◽  
X Ray ◽  
Image Intensifiers
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