PRELIMINARY DATA
MAY 1998
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 subject
to change without notice. No patent rights are granted to any of the circuits described herein.
1998 Hamamatsu Photonics K.K.
The F4655-01 is a very compact MCP assembly developed for
helium leak detector as well as mass spectrometer. It uses a
wide dynamic range MCP for extracting a high output current of
10
A* with high stability.
* : At an MCP resistance of 20M
APPLICATIONS
Helium leak detector
Mass spectrometer
FEATURES
Wide dynamic range
Compact and lightweight
Good cost performance
Compact MCP assembly optimized for helium leak detector and
mass spectrometer using a wide dynamic range MCP
WIDE DYNAMIC RANGE
MCP ASSEMBLY
FOR HELIUM LEAK DETECTOR
F4655-01
Figure 1: MCP Output Linearity Characteristiscs
10
-7
10
-8
0
50
100
150
10
-6
10
-5
OUTPUT CURRENT (A)
RELATIVE GAIN (%)
10
-4
CONVENTIONAL
MCP (2 stage)
Wide Dynamic Range
MCP (2 stage)
Wide Dynamic Range
MCP (1 stage)
TMCPB0080EA
SPECIFICATIONS
GENERAL
Param eter
Value
Unit
Assembly Outer Diameter
30.0
mm
Effective Diameter
14.5
mm
Maximum Height
8.5
mm
MCP Channel Diameter
12
m
Number of MCP Stages
1
-
Two-stage MCP type is also available on request.
MAXIMUM RATINGS (Absolute Values)
MCP Supply Voltage (In-Out)
1
kV
MCP-Out to Anode Voltage
0.5
kV
Electric Potential at Each
Terminal
MCP-In: -1.5
MCP-Out: -0.5
Anode: GND
kV
Operating Vacuum Condition
6.7
10
-4
(5
10
-6
)
Pa (Torr)
Baking Temperature
-
C
Baking Time
-
h
Baking Vacuum Condition
-
Pa (Torr)
Baking cannot be performed.
CHARACTERISTICS (at 1.3
10
- 4
Pa (1
10
- 6
Torr), Ta=+25
C)
Gain
1
10
4
-
Plate Resistance
5 to 50
M
Dark Current
0.5
pA/cm
2
A
A
B
B
B
B
TMCPF0089
HAMAMATSU PHOTONICS K.K., Electron Tube Center
314-5, Shimokanzo, Toyooka-village, Iwata-gun, Shizuoka-ken, 438-0193 Japan, Telephone: (81)539/62-5248, Fax: (81)539/62-2205
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone:(1)908-231-0960, Fax:(1)908-231-1218
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone:(49)8152-375-0, Fax:(49)8152-2658
France: Hamamatsu Photonics France: S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone:(33)1 69 53 71 00, Fax:(33)1 69 53 71 10
United Kingdom: Hamamatsu Photonics UK Limited: Lough Point, 2 Gladbeck Way, Windmill Hill, Enfield, Middlesex EN2 7JA, United Kingdom, Telephone:(44)181-367-3560, Fax:(44)181-367-6384
North Europe: Hamamatsu Photonics Norden AB: FSrsgatan 7, S-164 40 Kista, Sweden, Telephone:(46)8-703-29-50, Fax:(46)8-750-58-95
Italy: Hamamatsu Photonics Italia S.R.L.: Via della Moia, 1/E 20020 Arese, (Milano), Italy ,Telephone: (39)2 935 81 733 Fax: (39)2 935 81 741
Figure 2: Dimensional Outlines (Unit: mm)
WIDE DYNAMIC RANGE MCP ASSEMBLY FOR HELIUM LEAK DETECTOR F4655-01
TMCP1020E01
MAY 1998 SI
Printed in Japan (500)
120
60
14.5
18
3.5
15
3
3 - 2.2
3 - M1.6
7.5
4.5
0.5
12.5
EFFECTIVE AREA
ANODE LEAD
MCP-IN LEAD
MCP-OUT LEAD
P.C.D. 21.5
SINGLE MCP
INSULATOR
PROTECTION ELECTRODE
FOR CHARGING-UP
(SAME POTENTIAL
AS SUBSTRATE)
SUBSTRATE
ANODE
INSULATOR
8.5
P.C.D. 26
TMCPA0043EA
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