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mLine 83:
Line 83: − + − Fixed parameters from HPD specifications and no-light distribution ("pedestal") measurement: + + + + + + + + + + + − + + − + − + − + +
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[[Image:HPD_OnePEdist.png|thumb|300px|Distributions of primary and secondary photoelectron signals (noise included) for one incident primary photoelectron.]]
[[Image:HPD_OnePEdist.png|thumb|300px|Distributions of primary and secondary photoelectron signals (noise included) for one incident primary photoelectron.]]
The corrected distribution of secondaries, made up of two Gaussians to account for its slight asymmetry, allows the model to fit the measured spectra. First, the following parameters were fixed from HPD/amplifier specifications and no-light distribution ("pedestal") measurement:
* Total gain, including amplifier and oscilloscope waveform mean rescaling: 1.9264 × 10<sup>5</sup> V/p.e.;
* Total gain, including amplifier and oscilloscope waveform mean rescaling: 1.9264 × 10<sup>5</sup> V/p.e.;
* Pedestal position: -3.6606 × 10<sup>-3</sup> V;
* Pedestal position: -3.6606 × 10<sup>-3</sup> V;
The parameters relating to the shape of the primary and secondary electron distributions, as well as an additional Gaussian noise factor were allowed to vary.
{| border="0" cellpadding="20"
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{| style="text-align:center" border="1" cellspacing="0" cellpadding="5"
| σ<sub>0</sub> || 13.9 p.e.
|-
| σ<sub>1</sub> || 0.857 p.e.
|}
||
{| style="text-align:center" border="1" cellspacing="0" cellpadding="5"
{| style="text-align:center" border="1" cellspacing="0" cellpadding="5"
|-
|- style="background:#F1F2FF"
! colspan="2"| Gaussian 1
! colspan="2"| Gaussian 1
! colspan="2"| Gaussian 2
! colspan="2"| Gaussian 2
! Units
|-
|-
| p || 107.3 || r || 115.2
| p || 107.3 || r || 115.2 || p.e.
|-
|-
| α || .000815 || β ||.000524
| α || .000815 || β ||.000524 || -
|-
|-
| σ<sub>2</sub> || 35.01 || σ<sub>3</sub> || 132.9
| σ<sub>2</sub> || 35.01 || σ<sub>3</sub> || 132.9 || p.e.
|-
|-
|}
|}
|}