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--- technicians:technical_uhv_resistance_evaporator [2018/06/27 08:17] – created scholma
+++ technicians:technical_uhv_resistance_evaporator [2020/01/10 09:03] (current) – scholma
@@ Line 1: / Line 1: @@
-test
+===maintenance routine===
+==montly==
+replace crystal when lifetime >20%\\
+replace materials
+==yearly==
+check glass isolator at electrodes\\
+clean chamber walls
+=== ordering parts ===
+Chromium plated Tungsten rods\\
+Kurt Lesker. Article number EVSCRW2. 4" long. 36 euro for 5 pieces.\\
+.02V at 78A will give ~1800°C
+Tungsten boat, alumina coated\\
+Kurt Lesker, article number EVS35BAOW. 0.89V at 130A will give ~1200°C
+Tungsten boat\\
+Kurt Lesker, article number EVS35010W. 2.26V at 207A will give ~1800°C
+Au pellets 99.99%\\
+Kurt Lesker. Article number EVMAU40SHOT. 50 euro per gram.
+Au fine grenulates 99.99%\\
+Thessco, roughly 38 euro a gram (based on current Au price)
+=== ===