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The Timing System of the TOTEM Experiment

European Organization for Nuclear Research (CERN), 1211 Geneva, Switzerland
On behalf of the TOTEM collaboration.
Instruments 2018, 2(4), 21;
Received: 15 September 2018 / Revised: 15 October 2018 / Accepted: 22 October 2018 / Published: 24 October 2018
PDF [2914 KB, uploaded 24 October 2018]


The new proton timing stations of the Totem experiment are based on UltraFast Silicon Detectors installed in Roman Pots at 220 m from the interaction point 5 at LHC. The sensors have shown in beam test a timing resolution in the range 30–100 ps, depending on the pixel size. The readout is performed through a fast sampler chip: the SAMPIC. The best timing resolution can indeed be obtained only by recording the full waveform of the detector signal. The challenges to integrate the chip and the detector in the Totem-CMS DAQ and control systems will be discussed, together with the solutions adopted. The system has been successfully operated in LHC during some commissioning runs and during the special run in July 2018. View Full-Text
Keywords: high energy particle physics; timing detectors; LGAD sensors; firmware and electronics; detector operation high energy particle physics; timing detectors; LGAD sensors; firmware and electronics; detector operation

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Bossini, E. The Timing System of the TOTEM Experiment. Instruments 2018, 2, 21.

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