Changes between Version 11 and Version 12 of SavinGroup/MergedBeams/FirstLeg

Timestamp:

02/21/08 15:01:50 (18 years ago)

Author:

Hjalmar Bruhns

Comment:

--

SavinGroup/MergedBeams/FirstLeg

@@ -53 +53 @@
 
 == 90° Deflector == #Bender
-We deflect the beam by 90° with a spherical deflector such that no UV photons from the ion source can reach the interaction region of the experiment. We decided to use a spherical deflector because (in a perfect world) it doesn't screw up our beam shape and needs only low voltages to operate as compared to other options like cylindrical deflectors or quadrupole deflectors. Again, the design was originally inspired by a design from Aaron Covington that he gave us, but he used spherical plates that we found would be too hard to obtain/machine. So we changed the design considerably. There are two alignment holes in the outer deflection electrode. Machining of the spherical surfaces was done at the Nevis machine shop with a CNC mill. Here's how they looked before gold coating: 
+We deflect the beam by 90° with a spherical deflector such that no UV photons from the ion source can reach the interaction region of the experiment. We decided to use a spherical deflector because (in a perfect world) it doesn't screw up our beam shape and needs only low voltages to operate as compared to other options like cylindrical deflectors or quadrupole deflectors. Again, the design was originally inspired by a design from Aaron Covington that he gave us, but he used spherical plates that we found would be too hard to obtain/machine. So we changed the design considerably. There are two alignment holes in the outer deflection electrode. Machining of the spherical surfaces was done at the Nevis machine shop with a CNC mill. Here is the complete assembly: 
 
-[[Image(electrodes before coating.jpg, 25%)]] 
+[[Image(complete assembly 003_small.jpg, 50%)]]   [[deflector installed.2.jpg, 75%)]] 
 
 == Faraday Cup == #Cup