78 mm (3") photomultiplier
9305KB series data sheet
1 description

6 characteristics

The 9305KB is a 78mm (3”) 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.

unit
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
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/lmnA
-1dark count rate
spulsed linearity (-5% deviation):
divider AmA
divider B
mA
pulse height resolution:
single electron peak to valley
ratio
137%
Cs with 3 ” x 3 ” Nal(TI)µA
rate effect ( Ia for ∆ g/g=1%):
magnetic field sensitivity:
the field for which the output
decreases by 50 %-4most sensitive direction
T x 10-1
temperature coefficient:% ºCtiming:
single electron rise timenssingle electron fwhm
ns
multi electron fwhm
ns
multi electron rise timenstransit timensweight:g
maximum ratings:
anode currentµA
cathode current
nA
6
gain
x 10
sensitivity
A/lm
temperature°C(1)
V (k-a)VV (k-d1)
V(2)
V (d-d)Vambient pressure (absolute)kPa

2 applications
scintillation spectroscopy

3 features•

good pulse height resolution

4 window characteristics
9305KB/FLB
borosilicate
spectral range *(nm)refractive index (nd)KThU

295 - 630
1.49(ppm)
(ppb)
(ppb)

300
250
100

* wavelength range over which quantum efficiency exceeds 1 % of peak

5 typical spectral response curves(1)

subject to not exceeding max. rated sensitivity

7030
75
12
2

850
200
850
1000
0.7

100

1030
100
2
7.3
20

1.7
± 0.5
34
15
7.5
42130
100
200
3200
60
2700
450
300
202-30(2)subject to not exceeding max rated V(k-a)

8101,000

0

1700

0.5
2500

10,0002010max

7 typical voltage gain characteristics

BA/ l mquantum effi ci ency %30

typ30050070090071020010050610divider A10divider B

5101410

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•min8 voltage divider distribution
kA
B

d1 d2

d7RRR
R

3R3R

d8 d9

11 ordering information

d10aR R R R
2R 3R 4R 3RStandardHigh Pulsed
linearity

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

The 9305KB 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
by discussing your requirements with us. If your selection
option is for one-off order, then the product will be referred toas 9305KA. 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 mm9305

The drawings below show the 9305KB with the B14A cap
fitted, and the 9305KFLB in flying lead format with thetemporary B14A cap fitted. The cap is attached as agreed.

base options
KFL

flying lead basewith temporary B14A cap

options
E78 max

M

49.4

electrostatic shielding
see drawing below
supplied with spectral
response calibration

specification options

51.5 max

123 ± 3146 ± 3BA

as given in data sheet
single order toselected specification
repeat order toselected specification

Bnn

20max

12.7max

78.8 max

69max

56.8 max

conductive coating(for E option)
flying lead length
82 max when thetemporary B14A cap
is removed

insulating sleeve(for E option)

10 base configurations (viewed from below)

d6d3d7d8

786d5

921d1

d10

11 a

B14A

3d2

d9
105d4 49305KB series data sheet
page 2

1214

13ic

ic

k

B14A cap(for 9305KB and 9305KFLB)‘ic’ indicates aninternal connection

cld5
7
d4 6

cl 5
d 4
3d2

57.5 max

d6 d7 cl d8
9 10 11 12 d9
13 cl83clFL
2 1d1

21 20

12 voltage dividers

14d15 1016 a17cl1819 cl

k cl

The standard voltage dividers available for these pmts aretabulated below:clflying lead base(for 9305FLB)
after removal oftemporary cap

9305KB‘cl’ indicates cut lead

Our range of B14A sockets is available to suit the B14A cap.
The socket range includes versions with or without amounting flange, and versions with contacts for mounting
directly onto printed circuit boards.

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.comweb 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

9305FLB

d1 d2

kd6

d8

d7

d9 d10 a

C636P

C655P

3R

R

R

R

C636R

C655R

3R

R

R

2R 3R

C636S

C655S

150 V

R

R

R

C636T

C655T

150 V

R

R

2R 3R

R
R

R

R

4R 3R
R

R

4R 3R

R = 330k Ωchoose 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, 2012

DS_ 9305KB Issue 7 (11/06/12)