Diamond sensors for energy frontier experiments

Conference of 22nd International Workshop on Vertex Detectors, Vertex 2013 ; Conference Date: 15 September 2013 Through 20 September 2013; Conference Code:113811International audienceWe discuss the use of diamond sensors in high-energy, high-intensity collider experiments. Results from diamond sensor based beam conditions monitors in the ATLAS and CMS experiments at the CERN Large Hadron Collider (LHC) are presented and plans for diamond based luminosity monitors for the upcoming LHC run are described. We describe recent measurements on single crystal diamond sensors that indicate a polarization effect that causes a reduction of charge col- lection efficiency as a function of particle flux. We conclude by describing new developments on the promising technology of 3D diamond sensors

Diamond Particle Detectors for High Energy Physics

Proceedings of the 37 International Conference on High Energy Physics (ICHEP 2014), 2-9 July 2014, Valencia, Spain. Editors M. Aguilar-Benítez, J. Fuster, S. Martí-García, A. Santamaría.International audienceDiamond devices have now become ubiquitous in the LHC experiments, finding applications in beam background monitoring and luminosity measuring systems. This sensor material is now maturing to the point that the large pads in existing diamond detectors are being replaced by highly granular tracking devices, in both pixel and strip configurations, for detector systems that will be used in Run II at the LHC and beyond. The RD42 collaboration has continued to seek out additional diamond manufacturers and quantify the limits of the radiation tolerance of this material. The ATLAS experiment has recently installed, and is now commissioning a fully-fledged pixel tracking detector system based on diamond sensors. Finally, RD42 has recently demonstrated the viability of 3D biased diamond sensors that can be operated at very low voltages with full charge collection. These proceedings describe all of these advances

Test beam results of a 3D diamond detector

Conference of 23rd European Physical Society Conference on High Energy Physics, EPS-HEP 2015 ; Conference Date: 22 July 2015 Through 29 July 2015; Conference Code:123485International audience3D pixel technology has been used successfully in the past with silicon detectors for tracking applications. Recently, a first prototype of the same 3D technology has been produced on a chemical vapour deposited single-crystal diamond sensor. This device has been subsequently tested in a beam test at CERN's SPS accelerator in a beam of 120 GeV protons. Details on the production and results of test beam data are presented

A 3D diamond detector for particle tracking

Proceedings of the 13th Pisa Meeting on Advanced Detectors : Frontier Detectors for Frontier Physics, 24-30 May 2015, La Biodola, Italy.International audienceIn the present study, results towards the development of a 3D diamond sensor are presented. Conductive channels are produced inside the sensor bulk using a femtosecond laser. This electrode geometry allows full charge collection even for low quality diamond sensors. Results from testbeam show that charge is collected by these electrodes. In order to understand the channel growth parameters, with the goal of producing low resistivity channels, the conductive channels produced with a different laser setup are evaluated by Raman spectroscopy

Diamond Detector Technology: Status and Perspectives

Voir aussi : The European Physical Society Conference on High Energy Physics5-12 July 2017, Venice, ItalyInternational audienceThe planned upgrade of the LHC to the High-Luminosity-LHC will push the luminosity limits above the original design values. Since the current detectors will not be able to cope with this environment ATLAS and CMS are doing research to find more radiation tolerant technologies for their innermost tracking layers. Chemical Vapour Deposition (CVD) diamond is an excellent candidate for this purpose. Detectors out of this material are already established in the highest irradiation regimes for the beam condition monitors at LHC. The RD42 collaboration is leading an effort to use CVD diamonds also as sensor material for the future tracking detectors. The signal behaviour of highly irradiated diamonds is presented as well as the recent study of the signal dependence on incident particle flux. There is also a recent development towards 3D detectors and especially 3D detectors with a pixel readout based on diamond sensors

Diamond detectors for high energy physics experiments

International audienceBeam test results of the radiation tolerance study of chemical vapour deposition (CVD) diamond against different particle species and energies is presented. We also present beam test results on the independence of signal size on incident particle rate in charged particle detectors based on un-irradiated and irradiated poly-crystalline CVD diamond over a range of particle fluxes from 2 kHz/cm2 to 10 MHz/cm2. The pulse height of the sensors was measured with readout electronics with a peaking time of 6 ns. In addition functionality of poly-crystalline CVD diamond 3D devices was demonstrated in beam tests and 3D diamond detectors are shown to be a promising technology for applications in future high luminosity experiments