Monolithic structure with internal cooling for medical linac

摘要

In a clinical linear accelerator system for delivering charged particles for medical applications, a series of monolithic cavity-defining members (40, 64, 66, 68, 70) is connected to form a succession of accelerating cavities (72, 74, 78) with temperature regulation being achieved by aligning internal cooling passageways (42, 44, 46, 48) through the series of monolithic members. As a result, a continuous coolant flow path is formed through the monolithic members. At each member-to-member interface, there is a leakage-release path (94) for non-intrusively conducting any leakage that occurs at the interface. In the preferred embodiment, there is a braze connection (92) that separates the leakage-release path at an interface from the coolant flow path at that interface. The braze connection provides a seal that further safeguards against coolant entering an area in which performance of the system is affected.