Changes

file:jbhd4.jpg|This is the apparatus that will hold the active collimator.

file:jbhd4.jpg|This is the apparatus that will hold the active collimator.

file:jbhd5.jpg|A pic of me next to the future home of the active collimator. Photo credit to Sascha.

file:jbhd5.jpg|A pic of me next to the future home of the active collimator. Photo credit to Sascha.

file:jbhd6.jpg| You can see the collimating hole through which the photon beam will travel in this pic; it is 3.4 mm in diameter, and is comprised of a 30 cm tungsten block. There is also a 5 mm diameter hole (to the left).

file:jbhd6.jpg| You can see the collimating hole through which the photon beam will travel in this pic; it is 3.4 mm in diameter, and is comprised of a 30 cm long tungsten block. There is also a 5 mm diameter hole (to the left).

file:jbhd7.jpg| The backside of the collimator in the previous pic.

file:jbhd7.jpg| The backside of the collimator in the previous pic.

file:jbhd8(2).jpg|The second, "primary" collimator.

file:jbhd8(2).jpg| A 0.8 T permanent magnet which is used to the various particles (positrons, electrons, compton, showers, etc) from the result of collimation.

file:jbhd8.jpg| A downstream shot of the collimator cave. That's Sascha on the right.

file:jbhd8.jpg| A downstream shot of the collimator cave. That's Sascha on the right.

file:jbhd10.jpg| A piece of equipment to eliminate the secondary photon "halo" around the photon beam.

file:jbhd10.jpg| A piece of equipment to eliminate the secondary photon "halo" around the photon beam.