Vibration of Fixing Device of the Reaction …
377
Fig. 2 FEM model of the
interaction chamber
at the level 10–3 mbar; it is necessary to provide a mechanical alignment with the
gamma beam in the experimental area (Gamma Beam Transportation System).
In Fig. 3, there are shown some eigenmodes of the whole interaction
chamber (presented in Table 1). For example, the modes 5, 23, 24 involve camera
body vibration. The modes 12–15 and 19, 20. An excitation at a frequency close to
resonance can lead to unwanted effects. But since the part involved in this eigenmode
Table 1 The first 15
eigenpulsation for the whole
structure
No
Frequency (Hz)
1
15,15
2
19,24
3
40,48
4
64,28
5
71,01
6
80,14
7
84,58
8
85,69
9
95,22
10
119,95
11
152,89
12
183,92
13
184,22
14
199,73
15
204,31
377
Fig. 2 FEM model of the
interaction chamber
at the level 10–3 mbar; it is necessary to provide a mechanical alignment with the
gamma beam in the experimental area (Gamma Beam Transportation System).
In Fig. 3, there are shown some eigenmodes of the whole interaction
chamber (presented in Table 1). For example, the modes 5, 23, 24 involve camera
body vibration. The modes 12–15 and 19, 20. An excitation at a frequency close to
resonance can lead to unwanted effects. But since the part involved in this eigenmode
Table 1 The first 15
eigenpulsation for the whole
structure
No
Frequency (Hz)
1
15,15
2
19,24
3
40,48
4
64,28
5
71,01
6
80,14
7
84,58
8
85,69
9
95,22
10
119,95
11
152,89
12
183,92
13
184,22
14
199,73
15
204,31