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--- public:sunnyside:general_information [2020/04/08 15:17]
mel
+++ public:sunnyside:general_information [2024/09/10 14:52] (current)
prue_hammond
@@ Line 3: / Line 3: @@
 ====Sunnyside 2m chamber description====
-    The vacuum chamber diameter: 84” I.D
+  * The vacuum chamber diameter: 84” I.D
-    The vacuum chamber height: 12’ (13’ including hemispherical bottom).
+  * The vacuum chamber height: 12’ (13’ including hemispherical bottom).
-    The chamber has one filament ring 71.75” diameter (center of filaments).
+  * The chamber has one filament ring 71.75” diameter (center of filaments).
-    The chamber wall to the center of the filaments is 6.125”.
+  * The chamber wall to the center of the filaments is 6.125”.
-    The optimum placement of the surface of the mirror in the chamber is 19” below the chamber lid.
+  * The optimum placement of the surface of the mirror in the chamber is 19” below the chamber lid.
-    The top of the filaments to the edge of the mirror is 34” (vertical measurement - 72” diameter mirror).
+  * The top of the filaments to the edge of the mirror is 34” (vertical measurement - 72” diameter mirror).
-    The top of the filaments to the chamber lid is 53”.
+  * The top of the filaments to the chamber lid is 53”.
-    The mirrors are held from the chamber lid, the coated surface faces down.
+  * The mirrors are held from the chamber lid, the coated surface faces down.
-    There is one ring of 36 filaments located near the periphery of the chamber, below the mirror.
+  * There is one ring of 36 filaments located near the periphery of the chamber, below the mirror.
-    The filaments are made from 3 strand twisted tungsten wire (individual wire size 0.020”), 6 coils per filament, coiled section of filament 2.5” long, coil diameter 0.44” O.D., overall length of tungsten wire 12.625”.
+  * The filaments are made from 3 strand twisted tungsten wire (individual wire size 0.020”), 6 coils per filament, coiled section of filament 2.5” long, coil diameter 0.44” O.D., overall length of tungsten wire 12.625”.
-    Deposition material is aluminum, 99.999% purity, 1mm diameter wire, 1.25” or 1.375” long, folded twice, placed on the bottom of each filament loop, total of 216 pieces of aluminum.
+  * Deposition material is aluminum, 99.999% purity, 1mm diameter wire, 1.25” or 1.375” long, folded twice, placed on the bottom of each filament loop, total of 216 pieces of aluminum.
-    The tungsten filaments can be used for two or three shoots before they need to be replaced.
+  * The tungsten filaments can be used for two or three shoots before they need to be replaced.
-    Mechanical pump; Kinney KDH 250 rotary piston pump, pumping speed 248 (cfm)
+  * Mechanical pump; Kinney KDH 250 rotary piston pump, pumping speed 248 (cfm)
-    Roots Blower pump; Kinney KMBV 1300, pumping speed 1300 (cfm)
+  * Roots Blower pump; Kinney KMBV 1300, pumping speed 1300 (cfm)
-    (2) Diffusion pumps; Kinney KDP-32 (32” diameter) pumping speed 31000 l/s (baffled)
+  * (2) Diffusion pumps; Kinney KDP-32 (32” diameter) pumping speed 31000 l/s (baffled)
-    Holding pump; Stokes Microvac 148-H9, pumping speed 40 (cfm)
+  * Holding pump; Stokes Microvac 148-H9, pumping speed 40 (cfm)
-    Rough vacuum pressure is measured with Granville-Phillips Series 275 controllers with Convectron gauge sensors.
+  * Rough vacuum pressure is measured with Granville-Phillips Series 275 controllers with Convectron gauge sensors.
-    High vacuum pressure is measured with Granville-Phillips Series 270 controllers with Bayard-Alpert Series 274 ionization gauges.
+  * High vacuum pressure is measured with Granville-Phillips Series 270 controllers with Bayard-Alpert Series 274 ionization gauges.
-    The deposition rate and total thickness are measured by a Maxtek TM-100 R, 6.0 MHz quartz crystal microbalance.
+  * The deposition rate and total thickness are measured by a Maxtek TM-100 R, 6.0 MHz quartz crystal microbalance.
 [[.:Sunnyside Chamber Lid Drawings]]

MOON

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