51 mm (2") photomultiplier
9266B series data sheet
1 description

6 characteristics

The 9266B is a 51mm (2”) diameter, end window
photomultiplier with blue-green sensitive bialkali
photocathode and 10 high gain, high stability, SbCs dynodesof linear focused design for good linearity and timing. The
9266QB is a variant for applications requiring uv sensitivity.

2 applications
wide range of applications
x-ray and gamma-ray
scintillation

3 features••••high quantum efficiency
good SER
high pulsed linearity
low rate effect

4 window characteristicsspectral range**(nm)refractive index (nd)
KTh
U

9266B
borosilicate

9266QB*
fused silica

290 - 630
1.49

160 - 630
1.46300
250
100<10<10<10(ppm)
(ppb)
(ppb)

* note that the sidewall of the envelope contains graded seals of high K content** wavelength range over which quantum efficiency exceeds 1 % of peak

photocathode: bialkali
active diametermm
quantum efficiency at peak%luminous sensitivityµA/lmwith CB filter
with CR filter
dynodes: 10LFSbCs
anode sensitivity in divider A:
nominal anode sensitivity
A/lmmax. rated anode sensitivity
A/lm
overall V for nominal A/lm
Voverall V for max. rated A/lm
V6gain at nominal A/lm
x 10
dark current at 20 ºC:
dc at nominal A/lmnA
dc at max. rated A/lmnA
-1dark count ratespulsed linearity (-5% deviation):
divider A
mA
divider B
mAµA
rate effect ( Ia for ∆ g/g=1%):
magnetic field sensitivity:
the field for which the output
decreases by 50 %-4
most sensitive direction
T x 10-1
temperature coefficient:% ºCtiming:
multi electron rise timens
multi electron fwhm
nstransit timensweight:g
maximum ratings:
anode currentµA
cathode currentnA
6gainx 10sensitivity
A/lm
temperature°C(1)
V (k-a)VV (k-d1)
V(2)
V (d-d)Vambient pressure (absolute)kPa(1)subject to not exceeding max. rated sensitivity

3020

Q

50
500
850
1150
0.6B

300

500
wavelength nm

700

1100

0.3
3300

1.5

30
10020

1.3
± 0.54
6.5
40100
100
100
7500
60
2000
300
300
202-30(2)

subject to not exceeding max rated V(k-a)

810

1,000
500

10100501076divider A

10divider B

510

10100max

48
30
70
11.5
210,000

A/ l mquantum effi ci ency %8typ

7 typical voltage gain characteristics

5 typical spectral response curves

10min

900

0.1

4

10
0.2

0.4

0.6

0.8

1.0

1.2

Vk-a (kV)

1.4

1.6

1.8

2.0

gai n•••unit

8 voltage divider distribution
kA
B

d1 d2

d7

RRRR2R2R

d8

d9

9266B series data sheet
page 211 ordering information

d10 aR R R R
2R 3R 4R 3RStandardHigh Pulsed
linearity

Characteristics contained in this data sheet refer to divider A
unless stated otherwise.

The 9266B meets the specification given in this data sheet.
You may order variants by adding a suffix to the type number.
You may also order options by adding a suffix to the type
number. You may order product with specification options
by discussing your requirements with us. If your selection
option is for one-off order, then the product will be referred toas 9266A. For a repeat order, ET Enterprises will give theproduct a two digit suffix after the letter B, for example B21.
This identifies your specific requirement.

9 external dimensions mm9266

The drawings below show the 9266B in hardpin format, the9266KB with the B14A cap fitted and the 9266FLB in flying
lead format with the temporary B14A cap fitted. The cap is
attached as agreed with the customer.

window variantsQ

fused silica

base options
KKFL

51.5 max

cappedflying lead base withtemporary B14A cap

options
B95
S

100 ± 3124 ± 3M

12.7max

specification options
BA

20max

Bnn

56.8 max

d6
d5d4d3654d2

78

9 10 11B19A
3d121ic

19a12 ic
13ic
14
15 ic
16 ic
1718 ic

kic

B19A hardpin base(for 9266B)‘ic’ indicates aninternal connection

d6d5

d7d8

786

9105d4 4d3 3d2

d9

B14A
2

1d1

14d10

11a12ic

13ic

k

B14A cap(for 9266KB)

cld5
7d4 6

cl 5
d 4
3d2

52.6 max withelectromagnetic shielding

conductive coating(for B95 option)
mumetal* shield(for S option)

10 base configuration (viewed from below)
d8 d9 d10as given in data sheet
single order toselected specification
repeat order toselected specification

52.3 max withelectrostatic shielding

flying lead length
82 max when thetemporary B14A cap
is removedd7

electrostatic shielding
see drawing below
electromagnetic shielding
see drawing below
supplied with spectral
response calibration

insulating sleeve(for B95 & S options)d6 d7 cl d8
9 10 11 12 d9
13 cl
83cl

FL
2 1d1

21 2014d15 10
16 a17cl
1819 clk cl

12 voltage dividerscl

The standard voltage dividers available for these pmts aretabulated below:

flying lead base(for 9266FLB)
after removal oftemporary cap

9266
B/XXXB KB‘cl’ indicates cut lead

Our range of B19A sockets is available to suit the B19A
hardpin base. Our range of B14A sockets is available to suit
the temporary B14A cap when the flying lead base variant isselected. Both socket ranges include versions with or without
a mounting flange, and with contacts for mounting directly
onto printed circuit boards.

FLBd1kd2

d6

d8d7

d9 d10 aC647A C636A C655A2RRRRC647B C636B C655B

2R

R

R

2R 3R

C647C C636C C655C

150 V

R

R

R

C647D C636D C655D

150 V

R

R

2R 3R

R
R

R

R

4R 3R
R

R

4R 3R

R = 330 k Ω*mumetal is a registered trademark of Magnetic Shield Corporation

ET Enterprises Limited
45 Riverside Way
Uxbridge UB8 2YF
United Kingdom
tel: +44 (0) 1895 200880
fax: +44 (0) 1895 270873
e-mail: sales@et-enterprises.com
web site: www.et-enterprises.com

ADIT Electron Tubes
300 Crane Street
Sweetwater TX 79556 USA
tel: (325) 235 1418
toll free: (800) 399 4557
fax: (325) 235 2872
e-mail: sales@electrontubes.com
web site: www.electrontubes.com

choose accessories for this pmt on our website

an ISO 9001 and ISO 14001 registered company
The company reserves the right to modify these designs and specifications without notice.
Developmental devices are intended for evaluation and no obligation is assumed for future
manufacture. While every effort is made to ensure accuracy of published information thecompany cannot be held responsible for errors or consequences arising therefrom.

© ET Enterprises Ltd, 2013

DS_ 9266B Issue 11 (05/03/13)