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Several experimental studies are conducted to explain the impact of the plated metal film on the heat dissipation capability and performance of the helix slow-wave structure (SWS). The cold characteristics of the SWS are shown to be highly affected by the side-plated rods.

The study employs an effective thermal analysis method using ANSYS, which is utilized to study the heat-dissipation capacity of a helix traveling-wave-tube (TWT) slow-wave structure (SWS). The approach has shown to be extremely consistent and feasible.

The effect of the plated metal film on the heat dissipation capability and cold-test characteristics of the helix slow-wave structure (SWS) have been studied in several experimental tests and computer simulations. The thermal conduction and the power losses of the helix SWS were improved by using a plated helix. A brazed SWS with end-plated rods exhibits excellent heat dissipation capability. The side-plated rods affect the cold-test characteristics of the SWS. [ABSTRACT FROM AUTHOR]

A new experimental evaluation method is presented for evaluating and comparing the heat dissipation capability of the slow-wave structures (SWSs) of helix traveling-wave tube (TWT). The practicality and simplicity of the evaluation method have been validated through experimental tests in some components with different assembling and processing methods, such as the cold stuffing, the heat shrink, the hot insertion, the molybdenum wrapping methods, and so on. Experimental results demonstrate that our evaluation method can be used effectively and conveniently to estimate and compare the thermal dissipation capability of the SWSs of the helix TWT. [ABSTRACT FROM AUTHOR]