Fabrication of transmission target for reducing effects of electron beam drift in computed tomography x-ray system

A method of fabricating a transmission target for an X-ray system, comprising:

• forming a first substrate;
• etching at least one via in the first substrate;
• forming a second substrate;
• depositing a layer of seed metal on a top surface of the second substrate;
• placing the first substrate on the second surface with the vias facing down toward the second substrate;
• removing a portion of the first surface to expose the vias in the first substrate;
• and
• filling the vias with a target metal to form target metal blocks in the first substrate.

A method of fabricating a transmission target for an X-ray system, comprising:

• forming a first substrate;
• forming a second substrate;
• depositing a layer of seed metal on the top surface of the second substrate;
• bonding the first substrate onto the second surface etching at least one via in the first substrate;
• and
• filling the vias with a target metal to form target metal blocks in the first substrate.

An X-ray system, comprising:

• a cathode configured to emit electrons;
• an anode positioned in a line of the emitted electrons and configured to pass through at least some of the emitted electrons striking the anode;
• a transmission target positioned in the line of emitted electrons passing through the anode and configured to produce X-ray beams responsive to the electrons striking the transmission target, the transmission target comprising:
• a substrate;
• and
• a target metal block embedded in the substrate, wherein the width of the target metal block is less than the width of the substrate.