Technical Document
|
This
page provides the pulse shape, luminosity and flux information of
neutrons and photons for 23 neutron beam lines of the 1-MW pulsed-spallation
neutron source in the MLF.
The data are summarized in the Excel form. Original Excel form,
compressed forms (lzh or zip) are available for download. |
■ Neutron performance of the neutron source at
the 1-MW operation
| Type
of Moderator |
Number
of
Beam Ports |
Time-integrated
Thermal Neutron
Flux |
Peak
Neutron
Flux at 10 meV |
Pulse
Width
in FWHM at
10 meV |
| - |
[n/s・cm2]
# |
[n/eV・s・cm2]
# |
[μs] |
| Coupled
Moderator |
11 |
4.6
x 108 |
6.0
x 1012 |
92 |
| Decoupled
Moderator |
6 |
0.95
x 108 |
3.0
x 1012 |
33 |
Poisoned
Moderator
(Thicker Side) |
3 |
0.65
x 108 |
2.4
x 1012 |
22 |
Poisoned
Moderator
(Thinner Side) |
3 |
0.38
x 108 |
1.4
x 1012 |
14 |
# Values at 10 m from the moderators
■ Pulse
characteristics estimation for 23 neutron beam lines at JSNS （pdf）
(for neutron instruments design)
neutron pulse data [xls] [lzh]
[zip]
neutron luminosity data [xls] [lzh]
[zip]
■ Calculation
of high energy neutron spectra for 23 neutron beam lines at JSNS (pdf）
（for
shielding design of a neutron beam line）
data [xls] [lzh]
[zip]
■ Photon
spectra estimation for 23 neutron beam lines at JSNS （pdf）
（for
background estimation in photon detectors used in a neutron instrument room）
data [xls] [lzh]
[zip]
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