Background: With the development of design and construction technology in accelerator fields

high-quality beam brings challenges to beam diagnostics. Purpose: To meet the strict requirements

new beam measurement techniques have emerged. One of them is the Transverse Deflecting Structure (TDS) method that possesses advantages of versatility and high precision. This paper aims to design a TDS Structure for longitudinal measurements. Methods: Based on the work on TDS by scientists around the world

the Computer Simulation Technology-MICROWAVE STUDIO (CST-WS) software was applied to design a TDS cell structure-Disk loaded waveguide structure with two peripheral recesses matched to Hefei Light Source (HLS) parameters. Beam dynamics simulations are executed by using MATLAB and PARMELA to show the evolution of the bunch distribution in the structure

respectively. Results: Dimensions of this TDS

the field type and the resulting dispersion curve are obtained. And the impacts on the operating frequency of feature sizes are explicated. Conclusion: This structure can get the desired deflection field type. Stabilizing mode method can realize stable ~25.5 MHz frequency separation

which can be proved effective through CST simulations. Characteristic dimension b impacts the operating frequency most

and dr impacts changes most for different polarization modes. MATLAB and PARMELA simulation are consistent. Abstract