Integrated low cost curtain plate, orifice PCB and ion lens assembly

A mass spectrometer, comprising

• an ion source for generating a plurality of ions,
• a curtain plate/orifice plate assembly for receiving said ions, and
• a mass analyzer disposed downstream of said curtain plate/orifice plate assembly for receiving ions passing through said assembly and analyzing said ions based on their mass-to-charge ratios,
• wherein said curtain plate/orifice plate assembly comprises
• a curtain plate comprising a first printed circuit board (PCB) having an aperture configured for receiving said plurality of ions generated by the ion source, said first PCB having at least one metal coating disposed on at least a portion thereof,
• an orifice plate coupled to said curtain plate and comprising a second PCB providing an orifice substantially aligned with said aperture so that at least a portion of said ions entering the assembly via said aperture of the curtain plate can exit the assembly via the orifice of the orifice plate, said second PCB having at least one metal coating disposed on at least a portion thereof.