Speaker
Description
The custom chip VMM3a has been developed by Brookhaven National Laboratory (BNL) and is capable of simultaneous measurements of both the charge and time characteristics of signals in gaseous detectors. Its flexibility makes it attractive as a front-end electronics solution for a wide range of applications, including readout systems of Straw Trackers in future High Energy and Neutrino Physics experiments.
During our previous studies, persistent latching of the VMM3a has been observed in the time-at-threshold mode, that makes it inappropriate for the straw tube readout. To solve this problem, a new VMM3a readout architecture has been developed. The new concept uses external low-power FPGA to override internal logic of synchronization and timestamping which not only solve existing issues but moreover makes this logic more flexible and easier to implement in different DAQ systems.
In order to achieve the best performance for the straw tubes, we have added differential bufferization and external ADCs. That helped us to achieve a low-cost design with a price of ~3-5$ per channel and a power consumption of about 20-30mW per channel. The device is a complete multichannel solution for collection, amplification and digitization of incoming signals.
| Position | Senior Engineer |
|---|---|
| Affiliation | JINR |
| Country | Russia |
