  The Jinping Neutrino Experiment(JNE), conducted within the China Jinping
Underground Laboratory, aims to detect and analyze of solar neutrinos,
geo-neutrinos, and supernova neutrinos. A one-ton prototype will soon be in
commision with an upgrade from 30 channels to 60 channels, which will increase
the data bandwidth by one to two orders of magnitude and exceed the capacity of
the current CAEN DAQ system. Additionally, enhancing the performance and
flexibility of JNE DAQ system is crucial. This paper presents the design of a
new Tsinghua DAQ system for the JNE and its performance and stability. The new
Tsinghua DAQ(THDAQ) system for JNE is based on the cPCI protocol and
demonstrates powerful performance improvements: ADC ENOB of the THDAQ system
approximately exceeds 9.8-bit, marking a 14% improvement over the CAEN DAQ
system; The maximum clock deviation within a single chassis is 85.6 ps,
satisfying sub-nanosecond synchronization criteria; Each DAQ board features two
QSFP+ optical ports with 82.5Gbps transmission capability, while the PCIe board
supports a transmission rate of 100.2 Gbps. In addition, comparative
experiments between the two systems were also tested in detail. The analysis
results of waveform and charge spectrum prove the high stability of the THDAQ
system. This provides a foundation for the 60-channel and 4000-channel DAQ
systems.
