Speaker
Bora Akgun
(Rice University (US))
Description
The CMS phase 1 pixel upgrade is planned for installation in 2016-2017, incorporating a new
front-end ASICs with digital 400 Mbps data links to handle a higher instantaneous luminosity of up to 2.5 x 10^34 cm^-2 s^-1 and trigger rates of 100 kHz with bunch spacing scenarios of 25 or 50 ns. The new digital readout requires new back-end electronics incorporating faster optical receivers and firmware for decoding the new data format. Additionally the phase 1 upgrade is powered from DC-DC converters installed inside CMS close to the modules. To gain experience with this new readout chain and DC-DC converters in realistic operating conditions (trigger rates, backgrounds, high data occupancy, and possible single-event upsets) a pilot detector system comprising 8 sensor modules, service electronics, optical links, and back-end electronics has been prepared using pre-production parts and installed with the present forward pixel detector in 2014 during LS1. The pilot system will be operated concurrently with the present pixel detector in 2015-2016 to validate the data acquisition and powering design and advance online control system development for a rapid deployment of the full detector in 2017. This contribution will report on the phase 1 pilot system experience leading into Run 2 of the LHC.
Primary author
Bora Akgun
(Rice University (US))
