A Compton suppressed detector multiplicity trigger based digital DAQ for gamma-ray spectroscopy

Revealing multiple band structures in Xe131 from α -induced reactions

“…The data were sorted using the IUCPIX [24] data sorting package to gain match the data from all the four crystals and then generate the addback spectra of each clover detector, after ensuring Compton suppression by vetoing the corresponding BGO shield. These addback data were then used to construct the symmetric and angle dependent asymmetric E γ -E γ matrices and the E γ -E γ -E γ cube.…”

“…The clover detectors were placed at a distance of 25 cm from the target position. The pulse processing and data acquisition system of the INGA setup was based on PIXIE-16 250 MHz 12-bit digitizer modules [24]. Time stamped list mode data was acquired under the event trigger condition based on Compton suppressed clover detector multiplicity (M γ ), set either in coincidence (M γ ≥ 2) or in singles (M γ ≥ 1) mode.…”

Search for the origin of wobbling motion in the A≈130 region: The case of Xe131

“…Seven Compton-suppressed clover high-purity germanium (HPGe) detectors of the Indian National Gamma Array (INGA), arranged in three different angles θ = 40 • , 90 • , 125 • with respect to the beam direction, were employed to detect the deexciting γ rays [24]. A Pixie-16 (250 MHz, 12 bit, 16 channel) based digital data acquisition system was utilised to record the time-stamped valid events in single and coincident modes [25]. The gain-matched raw data were sorted to construct the symmetric and asymmetric matrices using the IUCPIX [25] data sorting package.…”

“…A Pixie-16 (250 MHz, 12 bit, 16 channel) based digital data acquisition system was utilised to record the time-stamped valid events in single and coincident modes [25]. The gain-matched raw data were sorted to construct the symmetric and asymmetric matrices using the IUCPIX [25] data sorting package. Offline data analysis was carried out using INGASORT [26] and RADWARE [27] analysis packages.…”

Digital Data Acquisition for Gamma-Ray Spectroscopy

“…In the digital system, the pulse processor digitalizes the preamplifier output, then shapes the pulse with a digital filter running in the field programmable gate array (FPGA).The functionality is the same as the analogue system, but the digital pulse processor moves the digitalization earlier in the signal processing chain. The digital system allows more flexibility and greater performance by implementing these processing elements in software [7].…”