ABSTRACT: The branching ratio for the decay K+ → π+νν¯ is sensitive to new physics; the NA62 experiment will measure it to within about 10%. To reject the dominant background from channels with final state photons, the large-angle vetoes (LAVs) must detect particles with better than 1 ns time resolution and 10% energy resolution over a very large energy range. Our custom readout board uses a time-over-threshold discriminator coupled to a TDC as a straightforward solution to satisfy these requirements. A prototype of the readout system was extensively tested together with the ANTI-A2 large angle veto module at CERN in summer 2010.
The NA62 LAV front-end electronics / Corradi, G., Moulson, M., Paglia, C., Raggi, M., Spadaro, T., Tagnani, D., Ambrosino, F., Di Filippo, D., Massarotti, P., Napolitano, M., Saracino, G., Angelucci, B., Costantini, F., Fantechi, R., Gallorini, S., Giudici, S., Mannelli, I., Raffaelli, F., Venditti, S., D'Agostini, G., et al.. - In: JOURNAL OF INSTRUMENTATION. - ISSN 1748-0221. - 7:(2012), pp. C01097-C01097. [10.1088/1748-0221/7/01/C01097]
The NA62 LAV front-end electronics
RAGGI, MAURO
;VALENTE, PAOLO
2012
Abstract
ABSTRACT: The branching ratio for the decay K+ → π+νν¯ is sensitive to new physics; the NA62 experiment will measure it to within about 10%. To reject the dominant background from channels with final state photons, the large-angle vetoes (LAVs) must detect particles with better than 1 ns time resolution and 10% energy resolution over a very large energy range. Our custom readout board uses a time-over-threshold discriminator coupled to a TDC as a straightforward solution to satisfy these requirements. A prototype of the readout system was extensively tested together with the ANTI-A2 large angle veto module at CERN in summer 2010.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
