Following prototype has been developed by JMU.
2 PVC used a primary support with mating pieces at each end.
PVC end cap for the backend used. The cap (2 standard end cap) is fit
into tube end using mating pieces (2 to 2 mating part)
Lemo signal feed thru
SHV voltage feed through
Figure 1. This shows
the rear end cap with the lemo and SHV connections, the Mu-metal insert, the
foam insets the will hold the PMT, and the front end cap.
2 to 1.5 mating piece used as front end cap.
acrylic rod is pressure fitted into the frond end cap; it is machined to
have a 1/8 x 1 indentation to align the PMT in time of use.
Figure 2. This shows the acrylic rod that is inserted
into PVC mating piece to make the front end cap. Note that an indentation
provides an alignment guide for the PMT.
hole is drilled through the center to support metal tubing and optic
fiber ( the metal tubes exact outer and inner diameter will be
determined once the optic fiber diameter is determined)
Figure 3. This shows
the front end cap and the acrylic insert which is machined and drilled. Also shown is the metal tubing which
protrudes from the front of the acrylic.
will be inserted into the 2 housing; into this we will insert the PMT
which will be supported by two soft foam inserts. The clear acrylic front allows you to
visually align the PMT and optic cable correctly.
Figure 4. This shows
the foam inserts holding 1 PVC acting as a PMT; the foam inserts slide into the
Mu-metal, which is inserted into the 2 PVC.
The frond end cap is shown lower right.