doubletstriplets

Doubletstriplets are a class of silicon detector elements used in tracking systems of particle physics experiments. A doubletstriplet consists of two closely spaced microstrip readout layers arranged in a single module, with a small stereo offset that allows simultaneous measurement of a charged particle’s position in two coordinates. The geometry provides improved two-dimensional reconstruction while keeping a compact form factor for inner detector regions.

Construction and readout: Each module contains two thin silicon strip sensors mounted with a controlled gap, typically tens to a few hundred micrometers, and an interleaved or staggered readout pattern. The modules are integrated with low-mass support structures and cooling, and connect to front-end electronics that digitize and transmit hit data. The stereo angle and strip pitch are tuned to balance spatial resolution, material budget, and readout complexity.

Performance and applications: Doubletstriplets aim to enhance spatial resolution and track-finding efficiency in dense event environments, particularly in vertex detectors near interaction points. They are used in prototypes and some experimental designs where precise short- and intermediate-range tracking is required.

Advantages and challenges: Advantages include better two-dimensional hit position determination, reduced ambiguity in high-occupancy environments, and compatibility with existing microstrip infrastructure. Challenges include added material and mechanical complexity, increased power and data rate, and radiation hardness requirements for inner-detector applications.

History: The concept emerged from ongoing work to optimize microstrip detectors with enhanced stereo readout, and has been explored in various research programs and detector development projects.

See also: silicon microstrip detector, strip detector, striplet, vertex detector.