Powder sample cell and holder

for the muon veto cryostat insert

Sample cell

This small aluminum sample cell fits into the simple muon veto cryostat insert. Although the veto counter does not come into play, this system is useful when only a little sample material is available or when the low background insert has been installed already.

The cell seals with an indium O-ring, pressed by 12 screws, #2-56. The interior is 0.148 inches (3.76 mm) deep and 0.625 inches (15.9 mm) in diameter (V = 0.75 cm³). Externally, its maximum diameter is 1.313 inch at the lip on the cover; the rest has a diameter of 1.25 inch, fitting into the cell holder.

Cell holder

The sample cell is mounted in this cell holder, secured by two brass screws (#4-40).

The holder is made of low oxygen copper, and, like other sample holders, attaches to the sample rod and thermometry block with 4 screws (#2-56).

The holder is 0.19 inch thick, 1.375 inch wide, and, including the mounting block, 1.625 inch tall. The hole is 1.254 inches in diameter.