Abstract
This note presents the development of front-end electronics prototype for A Toroidal LHC ApparatuS (ATLAS) New Small Wheel (NSW) detector small-strip Thin Gap Chamber (sTGC) to be used for level-1 triggering and precision muon tracking at the Large Hadron Collider. The sTGC front-end electronics must deal with a large number of strip channels with very limited space constraint, large dynamic range of charge readout with low noise, simultaneous fast trigger, and precision readout data movement. The prototype uses custom radiation-tolerant application specific integrated circuits, optimized layout, power, and ESD protection networks to realize the above stringent requirements. The electronic test indicates that the front-end channel has a dynamic range of 900 pC and inherent noise of 0.19 fC. The sTGC cosmic ray test verified the precision charge measurement of the prototype, reconstructed the muon track, and measured the performance of sTGC. The NSW trigger chain test verified the trigger processing and 4.8 Gbps transmission of the prototype.
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