Difference between revisions of "Tagger Microscope"
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| + | [[Image:TaggerMicFull_persp.png|thumb|317px|View of the tagger microscope from under the electron beam plane, with chamber walls removed]] | ||
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''[http://zeus.phys.uconn.edu/wiki/index.php/Tagger_microscope_prototype_construction Main page: Tagger Microscope Contruction (UConn Wiki)]'' | ''[http://zeus.phys.uconn.edu/wiki/index.php/Tagger_microscope_prototype_construction Main page: Tagger Microscope Contruction (UConn Wiki)]'' | ||
The '''Tagger Microscope''' is a movable, high-resolution hodoscope that counts post- bremsstrahlung electrons corresponding to the photon energy band of interest to the experiment in Hall D. While designed as a general-use device, it has been optimized primarily for use in the GlueX experiment, covering the E<sub>γ</sub> range of 8.4-9 GeV (E<sub>e</sub> 3-3.6 GeV) | The '''Tagger Microscope''' is a movable, high-resolution hodoscope that counts post- bremsstrahlung electrons corresponding to the photon energy band of interest to the experiment in Hall D. While designed as a general-use device, it has been optimized primarily for use in the GlueX experiment, covering the E<sub>γ</sub> range of 8.4-9 GeV (E<sub>e</sub> 3-3.6 GeV) | ||
| + | The design of the Tagger Microscope calls for the spectrally-analyzed electron focal plane to be instrumented with a detector array of scintillating fibers with axes oriented ''toward'' the oncoming electrons. This is done to maintain fine focal plane segmentation in two dimensions: | ||
| + | * fine segmentation along the direction of electrons spread mitigates the rate and increases the energy resolution | ||
| + | * segmentation in the y-directions allows selective readout to match the photon collimator acceptance. | ||
| − | + | To avoid placing photo-sensors along the path of the electronics, the scintillation light will be delivered to separately-mounted sensors and electronics via clear fiber waveguides. | |
[[Image:ElectronicsAssy_rend.jpg|thumb|250px|Rendering of the silicon photomultiplier-based scintillating fiber readout electronics.]] | [[Image:ElectronicsAssy_rend.jpg|thumb|250px|Rendering of the silicon photomultiplier-based scintillating fiber readout electronics.]] | ||
Revision as of 20:26, 7 November 2009
Main page: Tagger Microscope Contruction (UConn Wiki)
The Tagger Microscope is a movable, high-resolution hodoscope that counts post- bremsstrahlung electrons corresponding to the photon energy band of interest to the experiment in Hall D. While designed as a general-use device, it has been optimized primarily for use in the GlueX experiment, covering the Eγ range of 8.4-9 GeV (Ee 3-3.6 GeV)
The design of the Tagger Microscope calls for the spectrally-analyzed electron focal plane to be instrumented with a detector array of scintillating fibers with axes oriented toward the oncoming electrons. This is done to maintain fine focal plane segmentation in two dimensions:
- fine segmentation along the direction of electrons spread mitigates the rate and increases the energy resolution
- segmentation in the y-directions allows selective readout to match the photon collimator acceptance.
To avoid placing photo-sensors along the path of the electronics, the scintillation light will be delivered to separately-mounted sensors and electronics via clear fiber waveguides.
