25 mm (1") photomultiplier
9111B series data sheet
11 ordering information

1 descriptionunit

The 9111B is a compact 25 mm (1”) diameter, end window
photomultiplier with plano-concave window, blue-green
sensitive biakali photocathode and 10 high gain, high stability,
SbCs dynodes of circular focused design for fast timing. The
9111WB is a variant for applications requiring UV sensitivity.

2 applications
wide range of applications
X-ray & gamma-ray spectroscopy
photon counting of bio- and chemi-luminescent samples
high energy physics studies

3 features•••compact
fast time response
low operating voltage

4 window characteristics

spectral range*(nm)refractive index (nd)
KTh
U

9111B
borosilicate

9111WB
UV
glass

280 - 630
1.49

170 - 630
1.48

300
250
100

8500
3030(ppm)
(ppb)
(ppb)

* wavelength range over which quantum efficiency exceed
s 1 % of peak

5 typical spectral response curves(1)

subject to not exceeding max. rated sensitivity

30%

2228
70
11
250
500
800
1050
0.7

0.1

1300

0.3
3100
51

6.4

220
1.5
7.5
1120

2.5
± 0.5
1.8
3.11.21520100
20
7.1
500
60
1900
450
200
202-30(2)subject to not exceeding max rated V(k-a)

10,000W

10100

810BA/ l mquantum efficiencymax

7 typical voltage gain characteristics

200

7

typ

300

500

700

900

7

1,000
500

10100
50

106

divider B

divider A

105

104

110

wavelength nm

0.1

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••••

photocathode: bialkali
active diametermm
quantum efficiency at peak%luminous sensitivityµA/lmwith CB filter
with CR filter
dynodes: 10CFSbCs
anode sensitivity in divider A:
nominal anode sensitivity
A/lmmax. rated anode sensitivity
A/lm
overall V for nominal A/lm
V
overall 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/lm
nA-1
dark count rates
afterpulse rate:%
afterpulse time windowµs
pulsed linearity (-5% deviation):
divider AmA
divider BmA
pulse height resolution:
single electron peak to valley
ratio
137%Cs with 0.75” x 0.75” Nal(T1)57
Co with 0.75” x 0.75” Nal(T1)%rate effect (Ia for ∆ g/g=1%):µA
magnetic field sensitivity:
the field for which the output
decreases by 50 %-4
T x 10most sensitive direction-1% ºC
temperature coefficient:timing:ns
single electron rise timenssingle electron fwhm
nssingle electron jitter fwhm
nstransit time delaygweight:
maximum ratings:µA
anode currentnA
cathode current
6gainx 10(2)sensitivity
A/lm
temperature°C(1)
V (k-a)V (k-d1)
V(2)VV (d-d)kPaambient pressure (absolute):min9111B series data sheet
page 28

voltage divider distribution
kd1 d2d7

d8 d9

A 3R

RR

R

B 3RRRR

11 ordering information

d10aRRRR

2R 4R

StandardHigh Pulsed
Linearity

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

9The 9111B 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 typenumber. You may order product with specification options bydiscussing your requirements with us. If your selection option
is for one-off order, then the product will be referred to as
9111A. For a repeat order, ET Enterprises will give the producta two digit suffix after the letter B, for example B21. This
identifies your specific requirement.

9111

external dimensions mmwindow variantW

The drawings below show the 9111B in hardpin format andthe 9111FLB in flying lead format.

UV glassshielding option
Selectromagnetic shielding
see drawing below

selection option
25.4 max

0.63 diameter flexible leads
arranged on a 19.0 pcd.

M

supplied with spectral
response calibration

specification
BA

43 ± 1.5

as data sheet
customer specificselection(s) single ordercustomer specificselection(s) repeat orderBnn

10 max26.5 max withelectromagnetic
shielding

10 base configurations (viewed from below)

d9d7

aic

786ic
9105

d5 4
d3 3
d1

k1

d10

12 voltage dividers

11 d8

B14B
2

mumetal* shield(for S option)

insulating sleeve(for S option)

12 d1413d2

6d4

The standard voltage dividers available for this pmt are
tabulated below:‘ic’ indicates an internal connection

flying lead base(for 9111FLB)
after removal of temporary cap‘cl’ indicates cut lead

Our range of B14B sockets is available to suit the B14B
hardpin base. The socket range includes versions with orwithout a mounting flange, and with contacts for mounting
directly onto printed circuit boards.

a9111B 9111FLB k

d1 d2

d6

d7

d8

d9 d10 aR

C673A

C651A

3R

R

R

R

R

R

C673B

C651B

3R

R

R

R

R

2R 4R

C651C

150 VR

RRRR

C651D

150 V

RRRR

2R 4R

R

R = 330 kΩ*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 websitean 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, 2014

DS_ 9111B Issue 9 (20/02/14)