Preliminary tests of detector prototypes and front-end electronics integration in MIRACLES (ESS)

Abstract This work reports on preliminary tests and results for the neutron detection system of the MIRACLES instrument, the time-of-flight backscattering spectrometer at the European Spallation Source (ESS). Several prototypes consisting of two tubes connected in series using a U-connection (doublets) were designed, manufactured and tested. The purpose is, on one hand, to tests the robustness of the serial U-connection, and on the other hand, the integration of the doublets with the front-end electronics (preamplifiers and digitizer). Two models of multichannel charge-sensitive CAEN preamplifiers have been used during the experiments. These preliminary tests were essential to characterize the detectors and gain insight into the parameters for data acquisition chain prior to integration into the ESS data management.