Design, Prototyping, and Construction of Cylindrical uRWELL Detector

A cylindrical micro-Resistive-Well (µRWELL) detector, has been developed to provide precise directional information to help seed the DIRC cherenkov ring reconstruction for the Electron Ion Collider (EIC). The design features two independent half-cylindrical symmetrical sections that can be attached to each other to form a complete cylinder. Prototype components include the main frame (56 cm length, 13 cm radius) which provides a 3 mm drift gap space. a kapton drift foil, sealing inner and outer clamps, and a uRWELL/readout foil with U-V readout structure on composite prepreg base. Our design uses thin 3D- printed rigid materials, a copper-coated kapton foil, an inner and outer sealing clamps to create a rigid but low-mass inner main cylinder for the detector with a .07 percent radiation length in the active area. Furthermore a 10mm drift gap for use in micro-TPC mode was also developed. The main objectives are to demonstrate that a cylindrical µRWELL detector works and to quantify its tracking performance.