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Line 13: − [[Image:TAGM_Front.png|center|thumb|500px|Figure 1: CAD image of the upper and lower enclosures of the Tagger Microscope made during the design phase.]]+ − − [[Image:TAGM_Back.jpg|center|thumb|500px|Figure 1: CAD image of the upper and lower enclosures of the Tagger Microscope made during the design phase.]] − − + + + +
Moving the Tagger Microscope (view source)
Revision as of 00:48, 25 March 2021
, 00:48, 25 March 2021→Tagger Microscope
[[Image:TAGM.png|center|thumb|500px|Figure 1: CAD image of the upper and lower enclosures of the Tagger Microscope made during the design phase.]]
[[Image:TAGM.png|center|thumb|500px|Figure 1: CAD image of the upper and lower enclosures of the Tagger Microscope made during the design phase.]]
<gallery caption="Prior to Installation in the Tagger Hall" widths="450px" heights="450px" class="center">
<gallery caption="Prior to Installation in the Tagger Hall" widths="300px" heights="300px" class="center">
TAGM_Front.png|Figure 2: TAGM just prior to installation in the Tagger Hall. The side of the TAGM seen here will face towards the Tagger Magnet.
TAGM_Front.png|Figure 2: TAGM just prior to installation in the Tagger Hall. The side of the TAGM seen here will face towards the Tagger Magnet.
TAGM_Back.jpg|Figure 3: TAGM during reassembly just prior to installation in the Tagger Hall. The side of the TAGM seen here will face away from the Tagger Magnet when installed.
TAGM_Back.jpg|Figure 3: TAGM during reassembly just prior to installation in the Tagger Hall. The side of the TAGM seen here will face away from the Tagger Magnet when installed.
</gallery>
</gallery>
The tagger microscope (TAGM) consists of six major components: upper enclosure, lower enclosure, optical fibers, electronics, shielding, and darkening shroud. As seen from the CAD image above, Figure ???, the lower enclosure houses the microscope's electronics, while the upper enclosure contains the optical fiber bundle supports (a.k.a. popsicle sticks). The bundle supports are used to align the scintillating fiber (SciFi) long axis to incoming electron's path angle (at the tagger magnet's focal plane. end of the optical fibers are affixed bundle supports in the upper enclosure, and the light guide potion of the fiber extends down to the silicon photomultipliers (SiPMs) located on preamplifier boards in the lower enclosure.
The tagger microscope (TAGM) consists of six major components: upper enclosure, lower enclosure, optical fibers, electronics, shielding, and darkening shroud. As seen from the CAD image above, Figure 1, the lower enclosure houses the microscope's electronics, while the upper enclosure contains the optical fiber bundle supports (a.k.a. popsicle sticks). The bundle supports are used to align the scintillating fiber (SciFi) longitudinal axis to the incoming electron's path angle as it passes through the tagger magnet's focal plane. The designed angular tolerance, e.g. fiber to beam angular error, is 0.5 degree. MC simulations were performed to show the effect of various amounts of misalignment between the electron angle and the SciFi axis. Figure 4 shows a plot of one of the simulations with the solid line showing the scintillation response of the central fiber, while the dashed lines are the response for the adjacent fibers.
[[Image:e-angle_fiber-amp.png|center|thumb|300px|Figure 4: Result of a MC simulation performed to predict the response of adjacent scintillating fiber columns due to fiber axis misalignment with respect to a post-bremsstrahlung electron's path. The solid line represents the response seen by the central fiber, while the dashed lines are the adjacent fibers' response.]]
end of the optical fibers are affixed bundle supports in the upper enclosure, and the light guide potion of the fiber extends down to the silicon photomultipliers (SiPMs) located on preamplifier boards in the lower enclosure.
==Coordinate System==
==Coordinate System==