The 28th International Workshop on Vertex Detectors

Session

Large detectors

S1

14 Oct 2019, 08:40

Lafodia Sea Resort, Lopud Island, Croatia

Conveners

Large detectors: Operational experience 1

• Kazuhiko Hara (University of Tsukuba (JP))

Large detectors: Operational experience 2

• Tatjana Susa (Rudjer Boskovic Institute (HR))

Large detectors: Operational experience 3

• Kazuhiko Hara (University of Tsukuba (JP))

10. The operational experience, challenges and performance of the ATLAS Semiconductor Tracker during LHC Run-2

Shigeki Hirose (Albert Ludwigs Universitaet Freiburg (DE))

14/10/2019, 08:40

Talk

The Large Hadron Collider (LHC) recently completed its Run-2 operation period (2015-2018) which delivered an integrated luminosity of 156 fb-1 at the centre-of-mass $pp$ collision energy of 13~TeV. This marked 10 years of successful operation by the ATLAS Semiconductor Tracker (SCT), which operated during Run-2 with instantaneous luminosity and pileup conditions that were far in excess of what...

70. CMS Outer Tracker: Operational Experience, Performance and Lessons Learned

Tatjana Susa (Rudjer Boskovic Institute (HR))

14/10/2019, 09:10

Talk

The CMS Tracker consists of two tracking devices utilizing advanced silicon technology: the inner tracker with pixel detectors and the outer tracker composed of strip detectors. The outer tracker with its more than 15000 silicon modules and 200m2 of active silicon area is in its tenth year of operation at the LHC. We present the performance of the detector in the LHC Run 2 data taking. Results...

52. ALICE ITS: Operational Experience, Performance and Lessons Learned

Elena Botta (Universita e INFN Torino (IT))

14/10/2019, 09:40

Talk

ALICE (A Large Ion Collider Experiment) is one of the four main experiments at the CERN LHC.
It is dedicated to the study of heavy-ion collisions, to address the physics of strongly-interacting matter at extreme energy densities, where the formation of the quark-gluon plasma (QGP), a deconfined phase of matter, is expected.

During the LHC Run1 and Run2 periods, the innermost detector of...

64. LHCb VELO and Silicon Tracker: Operational experience, performance and lessons learned

Preema Rennee Pais (EPFL - Ecole Polytechnique Federale Lausanne (CH))

14/10/2019, 10:30

Talk

The Large Hadron Collider Beauty (LHCb) detector is a single-arm forward spectrometer, designed to detect decays of beauty and charm hadrons. High-precision track and vertex reconstruction in regions with the highest particle occupancies are enabled by a set of silicon-strip detectors: the VErtex LOcator (VELO) surrounding the interaction region, a large-area Tracker Turicensis (TT) located...

21. Performance of the Belle II Silicon Vertex Detector

Christoph Schwanda (Austrian Academy of Sciences (AT))

14/10/2019, 11:00

Talk

The Belle II experiment at the SuperKEKB collider of KEK (Japan) will accumulate 50 ab$^{-1}$ of $e^+e^-$ collision data at an unprecedented instantaneous luminosity of $8\times 10^{35}$ cm$^{-2}$s$^{-1}$, about 40 times larger than its predecessor. The Belle II vertex detector plays a crucial role in the rich Belle II physics program, especially for time-dependent measurements. It consists of...

11. Operational Experience and Performance with the ATLAS Pixel detector at the Large Hadron Collider

Martin Kocian (SLAC National Accelerator Laboratory (US))

14/10/2019, 11:30

Talk

The tracking performance of the ATLAS detector relies critically on its 4-layer Pixel Detector which
has undergone significant hardware and readout upgrades to meet the challenges imposed by the higher collision energy, pileup and luminosity delivered by the Large Hadron Collider (LHC), with record breaking instantaneous luminosities of 2 x 10^34 cm-2 s-1 recently surpassed.
The key status...

39. CMS Inner Tracker: Operational Experience, Performance and Lessons Learned

Atanu Modak (Kansas State University (US))

14/10/2019, 12:00

Talk

The CMS Phase-1 Pixel Detector was designed to cope with an instantaneous luminosity 2e34 cm-2 s-1 and 25 ns bunch spacing with very small efficiency loss. The upgraded detector has one additional hit coverage featuring 4 barrel layers and 3 endcap disks, almost doubling the pixel count to 124M. DCDC converters were used to deliver more power to the detector without the need of replacing the...

4. CMS Phase-1 Pixel Detector: Layer 1 Issues and Solutions

Danek Kotlinski (Paul Scherrer Institut (CH))

14/10/2019, 14:00

Talk

The first CMS pixel detector performed very well. Nevertheless it showed inefficiencies at high data rates when operated at luminosities above the planned LHC value of 10^34. Therefore it was decided to replace it with an improved version, the so called "phase-1" detector. It was constructed in 2013-2016 and installed in early 2017, during the LHC extended winter shutdown. The overall...

20. Belle II Pixel Detector Commissioning and Operational Experience

Björn Spruck (Universität Mainz)

14/10/2019, 14:30

Talk

The Belle 2 experiment at the super flavour factory SuperKEKB in Tsukuba, Japan, has started regular operation with its final detector setup in spring 2019. The Belle 2 vertexing system consists of four layers of double sided silicon strips (SVD) and two layers of DEPFET pixel sensors (PXD). These inner most pixel layers are arranged at radii of 14mm and 22mm around the beam pipe. The sensors...