New G0 Detectors Are In

The installation of all the new equipment needed for the backward-angle measurement of G0 is moving right along.  All the cryostat exit detectors (CEDs) are now mounted on the Ferris wheel in front of their corresponding octants of the original scintillation detectors we used for the forward-angle measurement.  Everything went smoothly, and the CEDs are ready for people to cable them up (which means to attach the high-voltage cables that power the photomultiplier tubes (PMTs) and the signal cables that convey the signals from the PMTs upstairs to our electronics and data-acquisition system) and check out the detectors when the that time comes in the schedule. 

Larry sent out some pictures once they finished mounting the CEDs a couple days ago.  The first picture shows the front of the detector arrays supported by what we fondly call the Ferris wheel.  The eight CEDs are in the front on the somewhat smaller octagonal support frame that is mounted to the main Ferris wheel that supports the black-colored original detector arrays from the forward-angle measurement (the black color is from the material used to make the octants light-tight).  The beam pipe will go through the center of the ring once it is put in.  For a sense of scale in the picture, the ladder on the right is a 15 or 20-foot ladder.  In the side view, you can see the G0 magnet too, with its nest of cryogenic hoses on top.  This photograph gives a better sense of the size of the detector arrays, since Des (standing) and Herbert (seated) are also in the picture.

So, things are moving right along as everyone prepares for the next G0 run period.  I will try to wander down to Hall C with my camera soon and take some more pictures of all the cool stuff going on in Hall C and all the amazing equipment we are putting in for G0.


[Photo Credit: Photographs taken by Larry Lee.]

Comments

[Jason]

Your lead training wasn't so they could have you lift those massive things, was it? :) *imagines Sarah like Atlas with a detector on her back*