Manufacturing precision multipole guides and filters

A precision multipole assembly comprising:

• a plurality of parallel rods;
• at least one insulator, each said insulator having an outer surface and an inner surface, said inner surface defining a void through said insulator;
• said plurality of parallel rods extending through said void in each said insulator;
• and
• a bond material attaching each of said plurality of parallel rods to predetermined locations on said inner surface of each said insulator.

A method of manufacturing a multipole assembly comprising the steps of:

• manufacturing a precision mandrel, said mandrel comprising a plurality of precision receiving surfaces for each of a plurality of rods;
• placing each of said plurality of rods in said plurality of precision receiving surfaces;
• positioning a plurality of insulators, wherein each said insulator has a void there through defined by at least an inner surface of said insulator, such that said plurality of rods and said mandrel extend through each said void of each said insulator;
• applying an adhesive to a gap established between each said rod and an adjacent portion of said inner surface of each said insulator;
• curing said adhesive;
• and
• removing said mandrel.

A method of manufacturing a multipole assembly comprising the steps of:

• positioning a plurality of rods on a precision mandrel such that said plurality of rods are parallel to each other and symmetrically placed about an axis of said precision mandrel;
• positioning at least one insulator such that said plurality of rods and said mandrel extend through a void which extends through said insulator, said void being defined by an inner surface of said insulator;
• applying an adhesive to fill a gap between each one of said plurality of rods and an adjacent portion of said inner surface of said insulator;
• curing said adhesive;
• and
• removing said mandrel.