PRELIMINARY DATA
MAY 1998
Subject to local technical requirements and regulations, a v ailability of products included in this promotional material ma y vary. Please consult with our sales office.
Information furnished by HAMAMATSU is believed to be reliable. How e v er, no responsibility is assumed for possib le inaccur acies 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 ver y 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
10µA* with high stability.
* : At an MCP resistance of 20MΩ
APPLICATIONS
Helium leak detector
Mass spectrometer
FEATURES
Wide dynamic range
Compact and lightweight
Good cost performanc e
Compact MCP assembly optimized for helium leak detector an d
mass spectrometer using a wide dynamic range MCP
WIDE DYNAMIC RANGE
MCP ASSEMBLY
FOR HELIUM LEAK DETECT O R
F4655-01
Figure 1: MCP Output Linearity Char acteristiscs
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
Parameter Value Unit
Assembly Outer Diameter 30.0 mm
Effective Diameter 14.5 mm
Maximum Height 8.5 mm
MCP Channel Diameter 12 µm
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
Operati ng V acuum Condit ion 6.7×10-4 (5×10-6)Pa (Torr)
Baking Temperat ure - °C
Baki ng Time - h
Baking Vacuum Condition - Pa (Torr)
Baking cannot be per formed.
CHARACTERISTICS (at 1.3×10-4
Pa (1×10-6
Torr), Ta=+25°C)
Gain 1×104-
Plate Resistance 5 to 50 MΩ
Dark Cur rent 0.5 pA/cm2
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: FŠršgatan 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
