Patent Number: 
Section: claims

1. A heat dissipation structure, comprising:a housing having a bottom surface, a liquid inlet channel, a liquid outlet channel and a protruding portion, wherein the liquid inlet channel and the liquid outlet channel are located at two opposite ends of the housing and above the bottom surface, and the liquid inlet channel and the liquid outlet channel extend along a first direction, the protruding portion is located between the liquid inlet channel and the liquid outlet channel and above the bottom surface, the protruding portion protrudes away from the bottom surface, the protruding portion has a protruding surface facing away from the bottom surface, a highest position of the protruding surface is higher than a highest position of the liquid inlet channel and the liquid outlet channel, the protruding surface has a former half region, a latter half region and a first symmetric line, the first symmetric line extends along a second direction perpendicular to the first direction, the former half region and the latter half region are symmetric with each other relative to the first symmetric line and directly connected with each other at the first symmetric line along the first direction, a first distance between the protruding surface and the bottom surface is continuously increased first throughout the former half region and then continuously decreased throughout the latter half region along the first direction, and the protruding surface is a convex surface curved along the first direction, the housing is configured to support a target, a second distance between the target and the protruding surface along a third direction perpendicular to the target is continuously decreased first throughout the former half region and then continuously increased throughout the latter half region along the first direction. 2. The heat dissipation structure of claim 1, wherein the protruding surface has a second symmetric line extending along the first direction, and the protruding surface is symmetric relative to the second symmetric line. 3. The heat dissipation structure of claim 1, wherein the housing has a pair of buffering grooves respectively located at two opposite ends of the protruding portion and located between the liquid inlet channel and the liquid outlet channel. 4. The heat dissipation structure of claim 1, wherein a lowest position of the protruding surface is higher than the highest position of the liquid inlet channel and the liquid outlet channel. 5. A neutron beam generating device, comprising:the heat dissipation structure of claim 1;a tubular body disposed on the heat dissipation structure and having a channel; andan accelerator connected with the tubular body and configured to emit an ionic beam towards the target disposed between the heat dissipation structure and the tubular body through the channel. 6. A neutron beam generating device, comprising:the heat dissipation structure of claim 2;a tubular body disposed on the heat dissipation structure and having a channel; andan accelerator connected with the tubular body and configured to emit an ionic beam towards the target disposed between the heat dissipation structure and the tubular body through the channel. 7. A neutron beam generating device, comprising:the heat dissipation structure of claim 3;a tubular body disposed on the heat dissipation structure and having a channel; andan accelerator connected with the tubular body and configured to emit an ionic beam towards the target disposed between the heat dissipation structure and the tubular body through the channel. 8. A neutron beam generating device, comprising:the heat dissipation structure of claim 4;a tubular body disposed on the heat dissipation structure and having a channel; andan accelerator connected with the tubular body and configured to emit an ionic beam towards the target disposed between the heat dissipation structure and the tubular body through the channel.