Dosimetry device for charged particle radiation

A dosimetry device for charged particle radiation comprising:

• a printed circuit board having one surface and other surface opposing to each other, the one surface including a central region, and the other surface including a first portion that overlaps the central region of the one surface and a second portion positioned out side of the first portion so as to not overlap the central region;
• a plurality of first electrodes formed on the central region of the one surface of the printed circuit board;
• a spacing frame disposed on the one surface of the printed circuit board to surround the central region of the one surface;
• a second electrode substrate disposed on the spacing frame and having a second electrode opposing to each of the first electrodes through an ionized space;
• and
• a signal processing circuit disposed on the other surface of the printed circuit board,
• wherein the signal processing circuit includes a plurality of signal processing blocks each comprising:
• a plurality of integrating ceramic capacitors resistant to charged particle radiation, coupled to the plurality of first electrodes, for integrating charge at each of the first electrodes;
• at least one amplifying circuit;
• and
• at least one selector switch that switchably connects each corresponding one of the integrating capacitors to the amplifying circuit,
• wherein the plurality of integrating ceramic capacitors are disposed on the first portion of the other surface of the printed circuit board, the first portion is a back surface of the first electrodes.

A dosimetry device for charged particle radiation comprising:

• a multi-layer printed circuit board having three or more wiring layers including at least first wiring layer, n-th wiring layer and a plurality of intermediate wiring layers between the first wiring layer and the n-th wiring layer opposing to one another, the multi-layer printed circuit board having one surface positioned on the first wiring layer and other surface positioned on the n-th wiring layer;
• a plurality of first electrodes formed on the one surface on the first wiring layer;
• a second electrode substrate having a second electrode opposing to each of the first electrodes through an ionized space;
• and
• a signal processing circuit including a plurality of signal processing blocks,
• wherein each of the signal processing blocks comprising:
• a plurality of integrating capacitors, coupled to the correspondent electrodes of the plurality of first electrodes, for integrating charge at them;
• at least one amplifying circuit disposed on the n-th wiring layer;
• and
• at least one selector switch disposed on the n-th wiring layer that switchably connects each corresponding one of the integrating capacitors to the amplifying circuit,
• wherein each of the plurality of signal processing blocks comprises a wiring combination for connecting the selector switch to corresponding one of integrating capacitors, and
• wherein each wiring combination of the plurality of signal processing blocks is disposed on a different one of the intermediate wiring layers in the multi-layer printed circuit board.

A dosimetry device for charged particle radiation comprising:

• a multi-layer printed circuit board having three or more wiring layers including at least a first wiring layer and an n-th wiring layer, which oppose one another, and a plurality of intermediate wiring layers between the first wiring layer and the n-th wiring layer, the multi-layer printed circuit board having one surface positioned on the first wiring layer and another surface positioned on the n-th wiring layer;
• a number A of a plurality of first electrodes formed on the one surface positioned on the first wiring layer;
• a second electrode opposing each of the first electrodes through an ionized space;
• and
• a signal processing circuit disposed on the other surface positioned on the n-th wiring layer, the signal processing circuit including a plurality of amplifying circuits and a number B of a plurality of selector switches, each selector switch switchably connecting each of the first electrodes in a corresponding group that includes a number C=A/B of the first electrodes among the number A of plurality of first electrodes to the corresponding amplifying circuit,
• wherein a number D of a plurality of wirings connecting the number A of the plurality of first electrodes to the number B of the plurality of selector switches are divided into a number E of a plurality of wiring combinations, and the number E of the plurality of wiring combinations are scattered on the plurality of intermediate wiring layers, and
• wherein the number D is equal to the number C and the number E is equal to the number B.