<p>Calibration parameters for each STED detector: With function f=p0+p1*x+p2*x*x</p>
<table border="1" cellpadding="1" cellspacing="1" style="width:600px">
<tbody>
<tr>
<td>
<p>Detector</p>
</td>
<td>p0 Value </td>
<td>p0 Error</td>
<td>p1 Value</td>
<td>p1 Error</td>
<td>p2 Value</td>
<td>p2 Error</td>
</tr>
<tr>
<td>
<p>STED 1</p>
</td>
<td>5.67257E-02</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">1.26442E-02</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">2.98739E-03</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">7.35717E-05</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:101px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:101px">5.53612E-09</td>
</tr>
</tbody>
</table>
</td>
<td>6.80573E-08</td>
</tr>
<tr>
<td>STED 2</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">3.28429E-02</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">8.70646E-03</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">3.65244E-03</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">6.73960E-05</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:101px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:101px">-1.00906E-07</td>
</tr>
</tbody>
</table>
</td>
<td>7.35018E-08</td>
</tr>
<tr>
<td>STED 3</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">4.94516E-02</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">9.74176E-03</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">3.09050E-03</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">6.48451E-05</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:101px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:101px">4.55854E-08</td>
</tr>
</tbody>
</table>
</td>
<td>5.55624E-08</td>
</tr>
<tr>
<td>STED 4</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">5.28963E-02</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">9.01234E-03</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">3.72607E-03</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">7.13115E-05</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:101px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:101px">8.07590E-08</td>
</tr>
</tbody>
</table>
</td>
<td>7.71976E-08</td>
</tr>
<tr>
<td>STED 5</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">5.72747E-02</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">9.19542E-03</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">2.91606E-03</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">6.10110E-05</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:101px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:101px">9.73475E-08</td>
</tr>
</tbody>
</table>
</td>
<td>5.75051E-08</td>
</tr>
<tr>
<td>STED 6</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">6.56951E-02</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">7.56334E-03</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">3.15511E-03</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">5.22840E-05</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:101px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:101px">3.41401E-08</td>
</tr>
</tbody>
</table>
</td>
<td>5.06241E-08</td>
</tr>
<tr>
<td>STED 7</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">4.66976E-02</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">8.08261E-03</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">3.12827E-03</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:96px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:96px">5.32355E-05</td>
</tr>
</tbody>
</table>
</td>
<td>
<table cellspacing="0" style="border-collapse:collapse; width:101px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:19px; vertical-align:bottom; white-space:nowrap; width:101px">7.80229E-09</td>
</tr>
</tbody>
</table>
</td>
<td>5.79147E-08</td>
</tr>
</tbody>
</table>
<p>A quadratic function was fitted to the reference point channel (from experimental histogram) and reference point energy (from simulation histogram). The reference point 'r' was r=mean+(FWHM/2) for a gaussian fitted to each compton edge. A quadratic function was used as it fitted the higher energy AmBe reference point better than a linear function. This is highlighted by the comparisson of "STED 2 Calibration" and "STED 2 Example Linear Fit Calibration" plots below. The p0 error is quite large and p2 error very large (larger than the parameter value in STED1) - however the parameters are highly correlated which may have inflated the error. </p>
<p>CmC histograms were not used as the compton edge could not be located. </p>
<p>For reference the STED 1 correlation matrix:</p>
<table border="1" cellpadding="1" cellspacing="1" style="width:500px">
<tbody>
<tr>
<td> </td>
<td>p0</td>
<td>p1</td>
<td>p2</td>
</tr>
<tr>
<td>p0</td>
<td>1</td>
<td>-0.92473</td>
<td>0.78779</td>
</tr>
<tr>
<td>p1</td>
<td>-0.92473</td>
<td>1</td>
<td> -0.91714</td>
</tr>
<tr>
<td>p2</td>
<td>0.78779</td>
<td>-0.91714</td>
<td>1</td>
</tr>
</tbody>
</table>
<p> </p> |