R1527 Datasheet, PDF (2/4 Pages) Hamamatsu Corporation – PHOTOMULTlPLlER TUBES

PHOTOMULTlPLlER TUBES R1527, R1527P(For Photon Counting)
MAXIMUM RATINGS (Absolute Maximum Values)
Parameter
Supply Voltage
Between Anode and Cathode
Between Anode and Last Dynode
Average Anode Current
Ambient Temperature
Value
1250
250
0.1
–80 to +50
Unit
Vdc
Vdc
mA
CHARACTERISTlCS (at 25 )
Parameter
Cathode Sensitivity
Quantum Efficiency at 300nm (Peak)
Luminous^B
Radiant at 400nm (Peak)
Blue^C
Anode Sensitivity
Luminous^D
Radiant at 400nm
Gain^E
Anode Dark Current ^E
After 30minute Storage in the darkness
Anode Dark Counts^F
ENI(Equivalent Noise Input)^G
Time Response^D
Anode Pulse Rise Time^H
Electron Transit Time^J
Transit Time Spread (TTS)^K
Anode Current Stability^L
Current Hysteresis
Voltage Hysteresis
R1527
for General Purpose
Min. Typ. Max.
R1527P
for Photon Counting
Min. Typ. Max.
19
40
60
60
6.4
200
400
4.0 10⁵
6.7 10⁶
0.1
2.0
3.7 10^-17
2.2
22
1.2
19
40
60
60
6.4
200
400
4.0 10⁵
6.7 10⁶
0.1
0.5
10
50
3.7 10^-17
2.2
22
1.2
0.1
0.1
1.0
1.0
Unit
%
A/lm
mA/W
A/lm-b
A/lm
A/W
nA
cps
W
ns
ns
ns
%
%
NOTES
A: Averaged over any interval of 30 seconds maximum.
B: The light source is a tungsten filament lamp operated at a distribution tem-
perature of 2856K. Supply voltage is 150 volts between the cathode and all
other electrodes connected together as anode.
C: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 B.
D:Measured with the same light source as Note B and with the anode-to-
cathode supply voltage and voltage distribution ratio shown in Table 1 be-
low.
E: Measured with the same supply voltage and voltage distribution ratio as
Note D after removal of light.
F: Measured at the voltage producing the gain of 1 10⁶.
G:ENI is an indication of the photon-limited signal-to-noise ratio. It refers to
the amount of light in watts to produce a signal-to-noise ratio of unity in the
output of a photomultiplier tube.
ENI = ^{2q.ldb.G. f}
S
where q = Electronic charge (1.60 10^-19 coulomb).
ldb = Anode dark current(after 30 minute storage) in amperes.
G = Gain.
f = Bandwidth of the system in hertz. 1 hertz is used.
S = Anode radiant sensitivity in amperes per watt at the wave-
length of peak response.
H:The rise time is the time for the output pulse to rise from 10% to 90% of the
peak amplitude when the entire photocathode is illuminated by a delta
function light pulse.
J: 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 amplitube. In measurement, the whole pho-
tocathode is illuminated.
K: Also called transit time jitter. This is the fluctuation in electron transit time
between individual pulses in the signal photoelectron mode, and may be
defined as the FWHM of the frequency distribution of electron transit times.
L: Hysteresis is temporary instability in anode current after light and voltage
are applied.
Hysteresis =
lmax. lmin.
li
100(%)
li
l max.
l min.
TIME
0
5
6
7 (minutes)
TPMSB0002EA
(1)Current Hysteresis
The tube is operated at 750 volts with an anode current of 1 micro-ampere for
5 minutes. The light is then removed from the tube for a minute. The tube is
then re-illuminated by the previous light level for a minute to measure the
variation.
(2)Voltage Hysteresis
The tube is operated at 300 volts with an anode current of 0.1 micro-ampere
for 5 minutes. The light is then removed from the tube and the supply voltage
is quickly increased to 800 volts. After a minute, the supply voltage is then
reduced to the previous value and the tube is re-illuminated for a minute to
measure the variation.
Table 1:Voltage Distribution Ratio
Electrode
K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 P
Distribution
Ratio
1 1111 11111
SuppIy Voltage : 1000Vdc
K : Cathode, Dy : Dynode, P : Anode