DOM MB Gain
6
DOM MB Gain Gerald Przybylski March 12, 2007 LBNL
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DOM MB Gain. Gerald Przybylski March 12, 2007 LBNL. Handy Single Photoelectron Pulse Model. Chosen for its similarity to an actual PMT pulse, a triangle pulse 15ns wide at the base by 5mV high across Z, the termination resistance. 0. -5mV. 0. 10ns. 20ns. A Single Photoelectron Model. - PowerPoint PPT Presentation
Transcript of DOM MB Gain
DOM MB Gain
Gerald Przybylski
March 12, 2007
LBNL
Handy Single Photoelectron Pulse Model
Chosen for its similarity to an actual PMT pulse, a triangle pulse 15ns wide at the base by 5mV high across Z, the termination resistance.
10
ns-5mV
0
0
20
ns
A Single Photoelectron Model
(15ns)(5mV)
2
Where Z is the termination resistance,
and G is the PMT gain
G = 37.5 pVs / ( Z . 1.602E-19 )
= 37.5 pVs / 43Ω / 1.602E-19 Coulomb
= 5.44E6
= 37.5 pVs = Z G (1.602E-19)
x 2.66 x 3 x 3
`
The integral under the curve is92 x 1mV x 10ns = 920 pVs
920/37.5 = 24.53 x 3 x 2.66 = 23.9