The TOTEM Roman Pot Motherboard

The TOTEM Roman Pot Motherboard (RPMB) is the interface between the hybrids with silicon detectors and front end chips in the Roman Pots, and the outside world. The RPMB is glued in the vacuum flange which separates the vacuum chamber containing the detector hybrids, and forms the feed through between vacuum and atmosphere. The hybrids have a flexible part with on-board connector for connection to the motherboard. The motherboard is equipped with connectors to the detector hybrids from one side and front panel with connectors to the patch panel form the other side. The RPMB needs to provide power and control, clock and trigger information to the 10 hybrids. It acquires tracking and triggers data from the hybrids, performs data conversion from electrical to optical format and transfers the data to the next level of the system [1]. It also collects information like temperature, pressure and radiation dose inside the pot. This paper presents the TOTEM RPMB in detail.