Moderator
optimization
for FP
ESS | Pancake moderator optimization for FP | 2014 | Camille Theroine
Simulated setup with McStas (1)
Moderator 2 1
Source 2m Monitor posi6on Sample Neutron guide 20m 2m For an NPDγ experiment for instance ESS | Pancake moderator optimization for FP | 2014 | Camille Theroine
Simulated setup with McStas (2)
5 diaphragms Moderator 1
Source 2m 2 Neutron guide 20m 2.5m For aSPECT experiment for instance Monitor posi6on ESS | Pancake moderator optimization for FP | 2014 | Camille Theroine
Simulated setup with McStas (3)
2m 4m 6m 8m Moderator 1
2 Source 3 4 5 Neutron guide 2m 20m For PERC experiment for instance Monitor posi6on 8m Flux taken inside the decay volume : average of the 5 monitors ESS | Pancake moderator optimization for FP | 2014 | Camille Theroine
Simulations results
Gain factors for different moderator heights
110
The weigh6ng takes into account both the spectral distribu6on and the importance of the various wavelengths for the specific experiments. 100
90
Total gain flux (%)
80
70
60
The best results are obtained with a moderator height of between 7 and 10 cm. 50
40
30
The FoM curve combines 3 cases. equal weigh6ng was used here. 20
10
0
0
10
20
30
40
50
60
Moderator height (mm)
70
80
90
100
ESS | Pancake moderator optimization for FP | 2014 | Camille Theroine

Ultrasafe pump- AOD PF-300

the full specifications and details

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