Laser ion source and heavy particle beam therapy equipment
AssigneeKabushiki Kaisha Toshiba
InventorsAkiko KAKUTANI, Takayuki SAKO, Kiyokazu SATO, Yoshiharu KANAI, Takeshi YOSHIYUKI, Tsutomu KURUSU
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Abstract
One embodiment of a particle accelerator includes: a vacuum container with its inside evacuated to produce vacuum, the vacuum container being formed with a laser beam entrance window for allowing a laser beam to enter; a target arranged in the vacuum container so as to be irradiated with a laser beam to generate ions; and a condenser lens for focusing the laser beam onto the target. The condenser lens is arranged at the laser beam entrance window of the vacuum container, and takes a role of a vacuum bulkhead.
Claims8
A laser ion source comprising:
- a vacuum container with its inside evacuated to produce vacuum, the vacuum container being formed with a laser beam entrance window for allowing a laser beam to enter;
- a target arranged in the vacuum container so as to be irradiated with the laser beam to generate ions;
- and
- a condenser lens for focusing the laser beam onto the target, the condenser lens being arranged at the laser beam entrance window of the vacuum container, the condenser lens taking a role of a vacuum bulkhead.
A laser ion source comprising:
- a vacuum container with its inside evacuated to produce vacuum, the vacuum container being formed with a laser beam entrance window for allowing a laser beam to enter;
- a target arranged in the vacuum container so as to be irradiated with a laser beam to generate ions;
- a vacuum window arranged at the laser beam entrance window of the vacuum container to introduce a laser beam into the vacuum container and having a function of a vacuum bulkhead;
- and
- a condenser lens arranged outside the vacuum container to focus the laser beam onto the target through the vacuum window.
Dependencies are inferred from the claim text.