8 Multianode, Small Dead Space, Fast Time Response
APPLICATIONS
G
Small Animal Imaging
G
Compact Gamma Camera
G
Scinti-mammography
G
2D Radiation Monitor
SPECIFICATIONS
GENERAL
Parameter
Spectral Response
Peak Wavelength
Photocathode Material
Window
Dynode
Material
Thickness
Structure
Number of Stages
Description / Value
300 to 650
420
Bialkali
Borosilicate glass
1.5
Metal channel dynode
12
64 (8
×
8 matrix)
5.8
×
5.8 / 6.08
49
×
49
52
×
52
×
28
89
140 (H8500), 117 (H8500B)
0 to +50
-15 to +50
Left: H8500, Right: H8500B
Number of Anode Pixels
Pixel Size / Pitch at Center
Effective Area
Dimensional Outline (W
×
H
×
D)
Packing Density (Effective Area / External Size)
Weight
Operating Ambient Temperature
Storage Temperature
Unit
nm
nm
—
—
mm
—
—
—
mm
mm
mm
%
g
°C
°C
MAXIMUM RATINGS (Absolute Maximum Values)
Parameter
Supply Voltage (Between Anode to Cathode)
Average Anode Output Current in Total
Divider Current at -1100 V
Value
-1100
100
180
Unit
V
µA
µA
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are
The light source is a tungsten filament lamp operated at a distribution temperature of 2856 K. Supply voltage is 150 volts between the cathode and
all other electrodes connected together as anode.
B:
The value is cathode output current when a blue filter(corning CS 5-58 polished to 1/2 stock thickness) is interposed between the light source and
the tube under the same condition as Note
A.
C:
Measured with the same light source as Note
A
and with the anode-to-cathode supply voltage and voltage distribution ratio shown in Table 1 below.
D:
Measured with the same supply voltage and voltage distribution ratio as Note
C
after 30 minute storage in darkness.
E:
Those are test data when a signal from a central channel of 64 anodes is used, while all photocathode are illuminated by pulsed light source.
F:
The rise time is the time for the output pulse to rise from 10 % to 90 % of the peak amplitude when the whole photocathode is illuminated by a delta
function light pulse.
G:
The electron transit time is the interval between the arrival of delta function light pulse at the entrance window of the tube and the time when the
anode output reaches the peak amplitude. In measurement, the whole photocathode is illuminated.
H:
Also called transit time jitter. This is the fluctuation in electron transit time between individual pulses in the single photoelectron event, and defined
as the FWHM of the frequency distribution of electron transit time.
Table 1: Voltage Distribution Ratio and Supply Voltage
编译自semiengineering 业界越来越关注人工智能的功耗问题，但这个问题并没有简单的解决方案。这需要深入了解应用、半导体和系统层面的软件和硬件架构，以及所有这些的设计和实现方式。每个环节都会影响总功耗和提供的效用。这是最终必须做出的权衡。 但首先，必须解决效用问题。电力是否被浪费了？“我们将电力用于有价值的用途，”Ansys（现为新思科技旗下公司）产品营销总监 Marc Swi...[详细]
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