S1 TITAN, T
RACER
5, and CTX User Manual
030.0112.04.0
23 of 67
X-ray beam
diameter
The following table provides specific beam diameters at selected distances from the beam port
when no sample is in place.
Beam Port Distance
in cm
Beam Diameter
in cm
1.50
1.20
5
2.5
10
4.23
30
11.34
100
36.5
Testing
conditions,
open beam
Radiation measurements were conducted –
Using a Thermo RadEye B20-ER meter corrected by results from NanoDots.
With the survey meter calibrated by the survey meter manufacturer.
The dose at the Beam Port for the open beam measurement was extrapolated from the 5cm and
10cm results on a logarithmic scale as described in IEC 62495.
Distance vs.
dose
Worst-Case
50KeV, 39
A
Blank, No Filter
Distance
(cm)
Dose
(Rem/hr)
Dose
(Sieverts/hr)
With Duplex
(
Rem/hr)
With Duplex
(
Sieverts/hr)
Beam Port
223.7
2.237
1300
13.00
5 cm
119.0
1.190
289.0
2.890
10 cm
63.24
0.6324
144.5
1.445
30 cm
19.9
0.199
44.2
0.442
100 cm
1.96
0.0196
Background
Background
Eye / Skin
Time to
Limit
4.02 / 13.4
Minutes
4.02 / 13.4
Minutes
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