The NA48 LKr calorimeter digitizer electronics chain

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 419; no. 2-3; pp. 680 - 685
• Main Authors: Hallgren, B, Bal, F, Barr, G, Buchholz, P, Ceccucci, A, Formenti, F, Funk, W, Gianoli, A, Kozhevnikov, Yu, Lacourt, A, Laverrière, G, Martini, M, Papi, A, Sozzi, M, Tarlé, J.C, Vossnack, O, Wahl, H
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 21-12-1998
• Subjects: ADC; Bassel filter; NA48 LKr calorimeter; ADC; Bassel filter; NA48 LKr calorimeter
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/S0168-9002(98)00846-8

The 13500 channels of the NA48 liquid-krypton electromagnetic calorimeter readout electronics were put into operation in 1997. The digitizer electronics employs a new gain switching technique that expands the dynamic range of a standard 10-bit ADC to 14 bits at 40MHz sampling rate employing a custom-developed integrated circuit (KRYPTON). The KRYPTON has been fabricated in 1.2μm BiCMOS technology and was successfully developed together with industry on a short timescale. The performance and the experience from the first year of the operation of the liquid-krypton calorimeter electronics will also be briefly discussed.