Studio di fotodiodi a valanga per il calorimetro CMS al LHC del CERN"
Studio di fotodiodi a valanga per il calorimetro CMS al LHC del CERN"
Studio di fotodiodi a valanga per il calorimetro CMS al LHC del CERN"
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M<br />
10 3<br />
10 2<br />
T=-5.7 o C<br />
T=-2.5 o C<br />
T=0.6 o C<br />
T=4.2 o C<br />
T=8.1 o C<br />
T=18.1 o C<br />
T=21.9 o C<br />
1/M dM/dT (1/ o C)<br />
0<br />
-0.01<br />
-0.02<br />
-0.03<br />
-0.04<br />
-0.05<br />
150 160 170 180 190 200 210<br />
V(V)<br />
-0.06<br />
0 10 20 30 40 50 60 70 80 90 100<br />
M<br />
(a)<br />
(b)<br />
Figura 3.13: (a) Curve <strong>del</strong> guadagno a tem<strong>per</strong>ature <strong>di</strong>erenti <strong>per</strong> <strong>il</strong> prototipo BA-N; (b)<br />
Coeciente <strong>di</strong> tem<strong>per</strong>atura <strong>del</strong> guadagno <strong>per</strong> <strong>il</strong> prototipo BA-N.<br />
n<br />
0.5<br />
0.45<br />
0.4<br />
V b (V)<br />
225<br />
220<br />
0.35<br />
215<br />
0.3<br />
0.25<br />
0.2<br />
210<br />
205<br />
0.15<br />
200<br />
0.1<br />
0.05<br />
195<br />
0<br />
-5 0 5 10 15 20<br />
T( o C)<br />
190<br />
-5 0 5 10 15 20<br />
T( o C)<br />
(a)<br />
(b)<br />
Figura 3.14: Dipendenza d<strong>al</strong>la tem<strong>per</strong>atura <strong>di</strong> n e V b <strong>per</strong> <strong>il</strong> prototpo BA-N <strong>del</strong>la Hamamatsu.<br />
70