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C953P PDF даташит

Спецификация C953P изготовлена ​​​​«PerkinElmer Optoelectronics» и имеет функцию, называемую «CHANNEL PHOTO MULTIPLIER».

Детали детали

Номер произв C953P
Описание CHANNEL PHOTO MULTIPLIER
Производители PerkinElmer Optoelectronics
логотип PerkinElmer Optoelectronics логотип 

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C953P Даташит, Описание, Даташиты
Lighting
Imaging
Telecom
Sensors
Channel Photomultipliers
Channel Photomultipliers
Overview and Specifications
.









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C953P Даташит, Описание, Даташиты
CHANNEL PHOTOMULTIPLIER
Features
• Ultra high anode sensitivity
up to 107 A/W
• Extremely low dark current,
typically 3pA @ 106 gain
• Very low equivalent
noise input (down to 10 -17 W)
• Very high stability in dark current
(no ”bursts”)
• High gain exceeding 108
• Very high dynamic range
• Compact dimensions
• Wide spectral response through
multiple window materials
• High resolution
• Fast response time
• High immunity to magnetic fields
• Rugged design
Description
PerkinElmer Optoelectronics, for-
merly EG&G Optoelectronics, is
pleased to introduce the Channel
Photomultiplier (CPM), a new ultra
high sensitivity optical detector
which replaces conventional photo-
multipliers (PMTs) and avalanche
photo diodes (APDs). This device
uses a unique detector principle, re-
sulting in a compact design with ul-
tra high gain, high dynamic range,
extremely low dark current, and fast
response.
This high-performance detector offers
fundamental advantages for analytical
instrumentation applications such as
emission spectroscopy, flourescence,
atomic absorption spectroscopy, and
bio and chemo luminescence. The
CPM also delivers important advan-
tages in life science products, indus-
trial and medical equipment, and high-
energy physics.
When compared to conventional
PMTs, the CPM improves anode
sensitivity by one order of magni-
tude, while lowering dark current by
one to two orders of magnitude. The
noise level shows extreme stability
over time, with no ”bursts.” The
extremely low dark current results in
a higher dynamic range than con-
ventional PMTs and extends detec-
table limits for many applications.
The CPM can be used in analog-DC
mode, single photon counting mode,
and in nuclear spectroscopy (when
coupled to scintillation materials like
BGO, LSO, Nal, etc.). PerkinElmer
Optoelectronics offers a choice of
window materials and photocatho-
des to cover the spectrum from
115 nm (UV range) to 900 nm (NIR).
The new detector is a small, head-on
type with a total diameter of 10.5 mm
including encapsulation. PerkinElmer
Optoelectronics also offers custom
configurations for specific applica-
tions.
PRINCIPLE OF OPERATION
Principle of Operation
The CPM, like conventional photo-
multiplier tubes, converts a very low
light level into photoelectrons by a
semitransparent photocathode de-
posited on the inner surface of the
entrance window. On their way from
the cathode to the anode the photo-
electrons pass through a narrow, se-
miconductive channel. Each time the
electrons hit the inner wall of the
curved channel, multiple secondary
electrons are emitted. This effect oc-
curs multiple times along the path,
leading to an avalanche effect with a
gain exceeding 108. The curved sha-
pe of the glass tube improves the
multiplication effect.
Physical Specification
Cathode Channel-Entrance
Channel-End Anode
-HV -HV +50…+300 V
red blue
-20…-50 V
black
100 V
1 Mohm
-HV
Proposal for Power Supply
Coax









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C953P Даташит, Описание, Даташиты
MAIN FEATURES
Unpotted /1 3 inch Channel Photomultiplier
Fig. 1: Typical current amplification
1 E+09
1 E+08
1 E+07
1 E+06
1 E+05
1 E+04
1 E+03
1 E+02
1000
1500
2000
Bias Voltage (V)
2500
Compact Size
The CPM is one of the smallest head-
on type detectors, with a 10.5 mm
diameter including encapsulation. The
photocathode has a useful diameter
of more than 5 mm. The tube is smal-
ler, easier to use, and more rugged
than discrete dynode types. Only a
single high voltage supply of up to
3000 volts is necessary; no external
voltage divider network is required.
A variety of different sizes will be avai-
lable soon (1/2” and 3/4”).
Ultra high anode sensitivity
At the maximum bias voltage of 3000 V,
gains can exceed 108. At 2400 V, an-
ode sensitivity is typically 3 x 106 A/W
at a wavelength of 410 nm with a bi-
alkali photocathode. This performan-
ce surpasses conventional PMTs by
one to two orders of magnitude and
beats APDs by approximately five or-
ders of magnitude (Fig. 1).
3000
Fig. 2: Typical anode dark current
1 E-05
1 E-06
1 E-07
1 E-08
1 E-09
1 E-10
1 E-11
1 E-12
1000
C 972 C 962 C 952
C 942
C 922
1500
2000
Bias Voltage (V)
C 911
2500
Extremely low dark current
The electron multiplication in the
channel is virtually silent, so dark cur-
rent depends only on the photoca-
thode material, leakage currents are
negligible. Bialkali photocathodes ex-
hibit typical dark count rates of 10
cps at a gain of 3 x 108, while UV ca-
thodes have dark count rates below 1
cps. In analog DC mode, the typical
dark noise for a bialkali photocathode
is 20 pA at a gain of 107. In general,
the noise level of the PerkinElmer
Optoelectronics CPM is one to two
orders of magnitude lower than dyn-
ode PMTs, resulting in a significant-
ly higher dynamic range (Fig.2).
3000










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