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Line 150: − + − xxxxxxxxxxxxx+ − − ===<u>Popsicle Stick Limitations</u>=== − Placing the "Pivot Point" on the focal plane and only allowing +0.5 cm towards the tagger magnet the maximum crossing angle for the current bundle support design is β<sub>max</sub> = 19.51<sup>o</sup>, while the minimum angle is β<sub>min</sub> = 4.05<sup>o</sup>. This does not account for the most forward bundle mounting strap clamp and bolts, but they are lower in Z<sub>FP</sub> than the fibers and should not extend significantly past the 0.5 cm limit even at lower β angles. − xxxxxxxxxxxxx Line 161:
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Line 199: − − Table with coordinates here ... − − *[http://zeus.phys.uconn.edu/~pratt/software/ablator.C '''AAAA.C: Text here.''']
Moving the Tagger Microscope (view source)
Revision as of 17:21, 12 April 2021
, 17:21, 12 April 2021no edit summary
Old-Popsicle-Stick-CAD-iso3.png|Figure 15: Side view of a bundle support (a.k.a. popsicle stick).
Old-Popsicle-Stick-CAD-iso3.png|Figure 15: Side view of a bundle support (a.k.a. popsicle stick).
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===<u>Popsicle Stick Limitations</u>===
Placing the "Pivot Point" on the focal plane and only allowing +0.5 cm towards the tagger magnet the maximum crossing angle for the current bundle support design is β<sub>max</sub> = 19.51<sup>o</sup>, while the minimum angle is β<sub>min</sub> = 4.05<sup>o</sup>. This does not account for the most forward bundle mounting strap clamp and bolts, but they are lower in Z<sub>FP</sub> than the fibers and should not extend significantly past the 0.5 cm limit even at lower β angles.
[[Image:e_path_in_Bundle.png|center|thumb|800px|Figure 16: Sketch showing the path of electrons that pass through the center of the fiber columns near the focal plane. At the back-end of the 2 cm. SciFi a misalignment of around 0.03 mm (with respect the the fiber's axis) results from using an averaged β angle for the bundle support location.]]
[[Image:e_path_in_Bundle.png|center|thumb|800px|Figure 16: Sketch showing the path of electrons that pass through the center of the fiber columns near the focal plane. At the back-end of the 2 cm. SciFi a misalignment of around 0.03 mm (with respect the the fiber's axis) results from using an averaged β angle for the bundle support location.]]
==Final==
==TAGM Move for a 6 GeV E<sub>γ</sub> Starting Point==
Using the calculations explained in [https://zeus.phys.uconn.edu/wiki/index.php/Calculating_the_move "Calculating the move" wiki page], the following parameters for a 6 GeV maximum tagged photon energy were determined.
<center>
<center>
<table style="border: thin solid black;" cellspacing="0">
<table style="border: thin solid black;" cellspacing="0">
<tr>
<tr>
<td align="left" valign="top">Starting E<sub>γ</sub> = </td> <td align="center" valign="top"> 11.0</td> <td align="left" valign="top"> GeV</td>
<td align="left" valign="top">Starting E<sub>γ</sub> = </td> <td align="center" valign="top"> 6.0</td> <td align="left" valign="top"> GeV</td>
</tr>
</tr>
<tr>
<tr>
<td align="left" valign="top">Ending E<sub>γ</sub> = </td> <td align="center" valign="top"> 11.0</td> <td align="left" valign="top"> GeV</td>
<td align="left" valign="top">Ending E<sub>γ</sub> = </td> <td align="center" valign="top"> 4.475</td> <td align="left" valign="top"> GeV</td>
</tr>
</tr>
<tr>
<tr>
<td align="left" valign="top">1<sup>st</sup> Bundle β<sub>o</sub> Angle = </td> <td align="center" valign="top"> 11.0</td> <td align="left" valign="top"> GeV</td>
<td align="left" valign="top">1<sup>st</sup> Bundle β<sub>o</sub> Angle = </td> <td align="center" valign="top"> 9.246</td> <td align="left" valign="top"> degrees</td>
</tr>
<tr>
<td align="left" valign="top">1<sup>st</sup> Bundle Resolution = </td> <td align="center" valign="top"> 15.1</td> <td align="left" valign="top"> MeV</td>
</tr>
<tr>
<td align="left" valign="top">Last Bundle β<sub>f</sub> Angle = </td> <td align="center" valign="top"> 8.51</td> <td align="left" valign="top"> degrees</td>
</tr>
<tr>
<td align="left" valign="top">Last Bundle Resolution = </td> <td align="center" valign="top"> 17.1</td> <td align="left" valign="top"> MeV</td>
</tr>
</tr>
<tr>
<tr>
<td align="left" valign="top">Last Bundle β<sub>f</sub> Angle = </td> <td align="center" valign="top"> 11.0</td> <td align="left" valign="top"> GeV</td>
<td align="left" valign="top">No. of Bundles Used = </td> <td align="center" valign="top"> 16</td> <td align="left" valign="top">Bundles </td>
</tr>
</tr>
<tr>
<tr>
<td align="left" valign="top">No. of Bundles Used = </td> <td align="center" valign="top"> 17</td> <td align="left" valign="top">Bundles </td>
<td align="left" valign="top">Tow Angle = </td> <td align="center" valign="top"> 0.049</td> <td align="left" valign="top"> degrees</td>
</tr>
</tr>
<tr>
<tr>
<td align="left" valign="top">Tow Angle = </td> <td align="center" valign="top"> 11.0</td> <td align="left" valign="top"> <sup>o</sup></td>
<td align="left" valign="top">Tow Shim = </td> <td align="center" valign="top"> 0.0056</td> <td align="left" valign="top"> inches</td>
</tr>
</tr>
<tr>
<tr>
<td align="left" valign="top">Rail Pitch = </td> <td align="center" valign="top"> 11.0</td> <td align="left" valign="top"> <sup>o</sup></td>
<td align="left" valign="top">Forward Rail Pitch = </td> <td align="center" valign="top"> 0.035</td> <td align="left" valign="top"> degrees</td>
</tr>
<tr>
<td align="left" valign="top">Rear Rail Pitch = </td> <td align="center" valign="top"> 0.118</td> <td align="left" valign="top"> degrees</td>
</tr>
</tr>
</table>
</table>
</center>
</center>