Up to 17 bundle supports can be mounted on the parallel railing system and instrumented in the TAGM. As the range of photon energies being tagged decreases (e.g. electron energy increases) the crossing angle (β angle) of the electrons with the focal plane also decreases. The smaller the β angle the more space along the X<sub>FP</sub> axis a bundle support will occupy. Below an E<sub>γ</sub> of 6.5 GeV (β = 9.5<sup>o</sup>) the length of the parallel railing system can only mount a maximum of 16 bundle supports. | Up to 17 bundle supports can be mounted on the parallel railing system and instrumented in the TAGM. As the range of photon energies being tagged decreases (e.g. electron energy increases) the crossing angle (β angle) of the electrons with the focal plane also decreases. The smaller the β angle the more space along the X<sub>FP</sub> axis a bundle support will occupy. Below an E<sub>γ</sub> of 6.5 GeV (β = 9.5<sup>o</sup>) the length of the parallel railing system can only mount a maximum of 16 bundle supports. |