1. PBC Method Flat Mirror Gas Mixture Dielectric Mirror Pump Window PM
HR Coated Fiber Tip
SMF
PBGF
Light PM
Vacuum
Collimating Lens

2. PBC Method Curved Mirror
Dielectric Mirror
Pump PM
PBC
HR Coated Fiber Tip
SMF
PBGF
Light PM
Vacuum

3. Chamber Assembly

4. Chamber Cross Section

5. Conflat flange for windows
O-ring groove to be machined on opposite of knife edge
Quantity: 4
O-ring : ID = 0.737” Thickness = 0.103”
¼” Deep Tapped hole for screw
2.75” Conflat flange with 0.505” Bore hole (already purchased this way)
Enlarge bore hole to diameter = 0.637”
(radius = ”)
Groove width = 0.103”x30% = ”
Groove depth should be 70% of 0.103” = .0721”
Bottom of groove should be smooth for “O” ring vacuum seal
Radius = ”
Holes are 120° apart
Lesker flange part #s:
0.505” Bore - F0275X050N
Blank – F0275X000N
0.637”
OD = ID + 2x(thickness + 30%)
= 0.737” + 2x(0.103”+.0309”)
= ”
0.737”
1.0048”
Will have 1” wedge window to install with teflon holder so that when chamber is brought to atmosphere, window doesn’t fall off (next page)
2.75”
Tapped holes are on both sides offset by 60 degrees to not interfere with each other.
SIDE:

6. Teflon window holder Quantity: 4 Raw teflon tube Top OD=1.55” Side
Should be large enough to fit 4-40 screw
(#30 drill size = ”
for free fit)
Counter bore for screw head
Raw teflon tube
OD=1.55”
ID=0.75”
Top
Side
0.6125”
Holes are
120 deg apart
Radius = ”
0.25”
1.05”
0.75”
1.05”
Recess to “catch” window
0.05” bigger than window
Depth of recess needs to be 0.050”
1.55”

7. Fiber holder Quantity: 4 Swagelok: SS-1-UT-A-4 (1/16” tubing hole)
Ultra-Torr Vac fitting “adapter”
Quantity: 4
Collar to attach to vacuum chamber (threads welded to flange):
A&N corporation
S-50-KM (0.515” ID, 5/8” tube OD)
1/16 ” tube hole
3/16 ”
1/4 ”
½” OD tubing
Overall length needs to be ~6”, so ½” OD tubing should probably be about 5”
Mike wasn’t sure what this piece was, though it is important for the interior to be conical so that the fiber will be guided through.

8. Conflat flange for fiber holder
Quantity: 3
O-ring : ID = 0.737” Thickness = 0.103”
2.75” Conflat flange
Bore hole to diameter = 0.620”
(radius = 0.310”)
Lesker flange part #s:
0.505” Bore – F0275X050N
Blank – F0275X000N
0.620”
2.75”
SIDE:

9. Chamber Layout
C2H2
Buffer Gas

10. Chamber Layout (Cont.)

11. Modified Acetylene Delivery System

12. Shelves

13. Shelves (Cont.)