XP2206
photomultiplier tubes
product specification
A tube for hot environment, 10-stage, 51mm (2") tube
Applications :
For scintillation counting and industrial photometry in high temperature
environment up to 130°C.
(Unless otherwise stated, all characteristics are given at 20°C)
Description :
Window :
Material :
Photocathode :
Refr. index at 420 nm :
borosilicate glass
high temperature bi-alkali
1.48
Multiplier :
Structure :
Nb of stages :
linear focused
10
Mass :
110 g
Photocathode characteristics
Spectral range :
Maximum sensitivity at :
Sensitivity • :
þ
Luminous :
Blue :
Blue at 130°C :
Radiant, at 400 nm :
min.:
5
typ.:
typ.:
typ.:
typ.:
270-650
420
nm
nm
40
7
5.5
50
µA/lm
µA/lmF
µA/lmF
mA/W
Characteristics with voltage divider A
Gain slope (vs supp. volt., log/log) :
For an anode blue sensitivity of :
þ Supply voltage :
7
max.:
min.:
1600
1000
Gain :
þ Anode dark current ‚ :
max.:
10
Anode dark current at 130°C :
Pulse height resolution 137Cs ƒ :
Mean anode sensitivity deviation „ :
long term (16 h) :
after change of count rate :
vs temperature between 0 and +40 °C at 420 nm :
Gain halved for a magnetic field of :
perpendicular to axis "n" :
parallel to axis "n" :
1.5
1300
A/lmF
V
2.1x105
typ.:
1
typ.:
15
typ.:
8.5
nA
nA
%
1
1
- 0.2
%
%
%/K
0.2
0.1
mT
mT
1300
2.1x105
100
V
mA
4
8
36
5
ns
ns
ns
pF
typ.:
Characteristics with voltage divider A … :
For a supply voltage of :
Gain :
Linearity (2%) of anode current up to :
Anode pulse † :
Rise time :
Duration at half height :
Transit Time :
Capacitance
anode to all :
PAGE 1/3
21/03/2005
ABCDE
XP2206
photomultiplier tubes
product specification
Recommended voltage divider
Type A for maximum gain
K
D1
D2
D3
D4
D5
D6
D7
D8
D9 D10
A
2
1
1
1
1
1
1
1
1
1
1
K: photocathode
Dn: dynode
A: anode
(total :12)
Limiting values
Anode luminous sensitivity :
Supply voltage :
Continuous anode current :
max.:
max.:
max.:
15
1700
0.2
A/lmF
V
mA
max.:
max.:
max.:
600
300
300
V
V
V
max.: +130
max.: +130
°C
°C
Voltage between :
D1 and photocathode :
consecutive dynodes :
anode and D10 :
min.:
150
min.:
30
short operation (< 30 mn) :
continuous operation & storage :
min.:
min.:
-30
-30
Ambient temperature :
Notes
þ Characteristic measured and mentioned on the test ticket of each tube.
• Luminous sensitivity is measured with a tungsten filament lamp with a colour temperature of 2856 ± 5 K. The blue
sensitivity, expressed in A/lmF ("F" as in Filtered) is measured with a tungsten filament lamp with a colour
temperature of 2856 ± 5 K. Light is transmitted through an interference filter.
‚ Dark current is measured at ambient temperature, after the tube has been in darkness for approximately 1 min.
Lower value can be obtained after a longer stabilisation period in darkness (approx. 30 min.).
ƒ Pulse amplitude resolution for 137Cs is measured with a NaI(Tl) cylindrical scintillator with a diameter of 50 mm and a
height of 50 mm. The count rate used is about 104 cps.
„ The mean pulse amplitude deviation is measured by coupling a NaI(Tl) scintillator to the window of the tube. Long
term (16h) deviation is measured by placing a 137Cs source at a distance from the scintillator such that the count
rate is ~ 104 c/s, corresponding to an anode current of ~ 300 nA. The mean pulse amplitude deviation after change
of count rate is measured with a 137Cs source at a distance from the scintillator such that the count rate can be
changed from 104 to 103 c/s, corresponding to an anode current of ~ 1 µA and 0.1 µA respectively. Both tests are
carried out according to ANSI-N42-9-1972 of IEEE recommendations.
… To obtain a peak pulse current greater than that obtainable with divider A, it is necessary to increase the
inter-dynode voltage progressively. Divider circuit C is an example of a progressive divider, giving a compromise
between gain, speed and linearity. other dividers can be conceived to achieve other compromises. It is generally
recommended that the voltage ratio between two successive stages is less than 2.
† Measured with a pulse light source, with a pulse duration (FWHM) of approximately 1ns., the cathode being
completely illuminated. The rise time is determined between 10 % and 90 % of the anode pulse amplitude. The
signal transit time is measured between the instant at which the illuminating pulse of the cathode becomes
maximum, and the instant at which the anode pulse reaches its maximum. Rise time, pulse duration and transit time
vary with respect to high tension supply voltage Vht as (Vht)-½.
PAGE 2/3
21/03/2005
ABCDE
XP2206
photomultiplier tubes
product specification
Typical gain curve
Gain
1E+6
1E+5
1E+4
800
1000
XP2206
1250
Vht(V)
1500
Typical spectral characteristics
Sk (mA/W)
100
10
1
Ref.:
sp:
nc:
ic:
n:
08800009
short pin
not connected
internal connection
plane of symmetry of the multiplier
K:
A:
cathode D: dynode
anode
PAGE 3/3
100 200 300 400 500 600 700 800 900
Wavelength (nm)
XP2206
Accessories
Socket:
Mu-metal shield:
FE2019
MS152
21/03/2005
ABCDE