Changes

The '''Tagger Microscope''' is a movable, high-resolution [http://en.wikipedia.org/wiki/Hodoscope hodoscope] that counts post- bremsstrahlung electrons corresponding to the photon energy band of interest to the [http://www.gluex.org/ GlueX] experiment in [http://www.jlab.org/Hall-D/ Hall D] in [[http://www.jlab.org Jefferson Lab]. While designed as a general-use device, it has been optimized primarily for use in the GlueX experiment, covering the E_γ range of 8.4-9 GeV (E_e 3-3.6 GeV)

[[Media:Example.ogg]]The '''Tagger Microscope''' is a movable, high-resolution [http://en.wikipedia.org/wiki/Hodoscope hodoscope] that counts post- bremsstrahlung electrons corresponding to the photon energy band of interest to the [http://www.gluex.org/ GlueX] experiment in [http://www.jlab.org/Hall-D/ Hall D] in [[http://www.jlab.org Jefferson Lab]. While designed as a general-use device, it has been optimized primarily for use in the GlueX experiment, covering the E_γ range of 8.4-9 GeV (E_e 3-3.6 GeV)

Construction of the Tagger Microscope prototype is now complete.  Below are topics concerning the branches of the work required for its completion and testing in preparation for the construction of the fully-instrumented Tagger for Hall D in Jefferson Lab.

Construction of the Tagger Microscope prototype is now complete.  Below are topics concerning the branches of the work required for its completion and testing in preparation for the construction of the fully-instrumented Tagger for Hall D in Jefferson Lab.

:''Main article: [[Tagger Microscope Mechanical Design]]'' ([[User:Senderovich|Igor Senderovich]], [[User:mcintyre|James McIntyre]])

:''Main article: [[Tagger Microscope Mechanical Design]]'' ([[User:Senderovich|Igor Senderovich]], [[User:mcintyre|James McIntyre]])

Mechanical design of the Tagger Microscope is well underway. The design is intended to simplify the repetitive components necessary while maximizing the flexibility of the device. In particular, the drastic dependence of the electron crossing angle with energy has been taken account: the device will have the ability for orientation of its fiber modules to match any segment in the useful energy range.

Mechanical design of the full-scale tagger microscope is well underway. The design is intended to simplify the repetitive components necessary while maximizing the flexibility of the device. In particular, the drastic dependence of the electron crossing angle with energy has been taken account: the device will have the ability for orientation of its fiber modules to match any segment in the useful energy range.

Additionally a movable internal pulser for testing and a three-point remote-control-adjustable plane for the fiber array are under design.

Additionally a movable internal pulser for testing and a three-point remote-control-adjustable plane for the fiber array are under design.

== Beam Test in Hall B at Jefferson Lab ==

== Beam Test in Hall B at Jefferson Lab ==

Preparations for testing the tagger microscope in a live beam are underway. The ideal place to test the prototype is near another tagger magnet such as the one in Hall B. Thus the plan is to set the prototype downstream of Hall B's hodoscope.   

The ideal place to test the prototype is near another tagger magnet such as the one in Hall B. Thus the plan is to set the prototype downstream of Hall B's hodoscope.   

[http://zeus.phys.uconn.edu/~senderovich/GlueX/Tagger/Reports/MicroscopeBeamTest_plan-2-2010/MicroscopeBeamTest_plan-2-2010.pdf Beam Test Plan]

[http://zeus.phys.uconn.edu/~senderovich/GlueX/Tagger/Reports/MicroscopeBeamTest_plan-2-2010/MicroscopeBeamTest_plan-2-2010.pdf Beam Test Plan]