Design of trigger test board for the Daya Bay neutrino experiment

We have designed a trigger test board (TTB) to test the local trigger board (LTB) for the Daya Bay reactor neutrino experiment, which is aimed to measure the neutrino mixing angle sin
²
2θ
13
with a precision down to 1% level at 90% C.L‥ In this experiment, there are three modular detectors, which are located in two near halls and one far hall. The modular detector consists of three types of sub-detectors: the anti-neutrino detector (AD), the water Cherenkov detector (WCD) and the resistive plate chambers (RPC). AD and WCD use the same data readout electronics, including the front end electronic (FEE) and the local trigger board (LTB). To meet the experimental requirement, LTB needs to generate multiple types of triggers with high trigger probabilities. TTB is specially designed to test the LTB performance by generating programmable analog and digital signals required by the LTB. This article shows the design of TTB and the test results of LTB.