PIENUX is a next-generation experiment to measure the charged-pion branching ratios to electrons vs muons, Re/μ and pion beta decay (Pib) π+→π0eν. Re/μ provides the best test of e-µ universality and is extremely sensitive to new physics at high mass scales; Pib could provide a clean high precision value for Vud. Order of magnitude improvements in precision to these reactions will probe lepton...
Silicon detectors are crucial for charged particle trajectory measurements with high precision. They provide high spatial granularity using pixels, strips and are ubiquitous in High Energy Physics (HEP) experiments. In recent years, Low Gain Avalanche Detectors (LGADs) have shown the capability of timing measurements in the tens of ps range, giving a possibility to make ultra-fast silicon...
We present here an evaluation of the high-rate suitability of AC-LGADs (also named Resistive Silicon Detectors RSD) that can be made with great segmentation for the charge collection while maintaining a 100% fill factor. This is achieved by employing un-segmented (p-type) gain layer and (n-type) N-layer, and a di-electric layer separating the metal readout pads. The design allows great...
AMS-100 is one of the next generation high energy cosmic-ray experiment in space as a successor of AMS-02 and has a potential of improving the sensitivity by a factor of 1000 for the cosmic antimatter particles [AMS-100][1].
It is designed as a magnetic spectrometer with a large geometrical acceptance of 100m2 sr and to be operated for ten years at Sun-Earth Lagrange Point 2.
It consists of...
Very high luminosity experiments at future accelerators will need a new generation of vertex detectors able to stand exceptionally high levels of radiation and to provide precise spatial and time reconstruction of tracks. Diamond sensors may provide a promising radiation hard solution to these challenges posed by future hadron machines.
A 3D geometry with thin columnar resistive electrodes...
We present the experimental results obtained with the FAST2 ASIC. It is a picosecond resolution front-end electronics to read out Ultra-Fast Silicon detectors (UFSD). It has been optimized to achieve a combined time resolution below 45 ps. The ASIC implements the standard 110 nm CMOS technology and 20 readout channels. The ASIC power rail is at +1.2 V, achieving a power consumption of 2.4...
Low Gain Avalanche Detectors (LGADs) are n-on-p silicon sensors with an extra doped p-layer below the n-p junction which provides signal amplification. When the primary electrons reach the amplification region new electron-hole pairs are created that drift towards the p+ region increasing the generated signal. The moderate gain of these sensors, together with the relatively thin active region,...
Low Gain Avalanche Detectors (LGADs) are n-on-p silicon sensors with an extra doped p-layer below the n-p junction which provides signal amplification. When the primary electrons reach the amplification region new electron-hole pairs are created that drift towards the p+ region increasing the generated signal. The moderate gain of these sensors, together with the relatively thin active region,...
The increase in instantaneous luminosity during the high-lumi phase of the LHC represents a significant challenge for future detectors. In order to cope with high-pileup conditions, a promising strategy is to add a fourth dimension to the measurements of the hits, by exploiting the time separation of the various proton-proton primary collisions. Such a strategy requires to achieve time...
Low gain avalanche detectors can measure charged particle fluences with high speed and spatial precision, and are a promising technology for radiation monitoring and dosimetry. A detector has been tested in a medical linac where single particles were observed with a time resolution of 50 ps. The integrated response is similar to a standard ionising chamber but with a spatial precision twenty...
We present the ASIC development and test results of the picoTDC, a 64 channel time tagging Time-to-Digital Converter (TDC) with 3ps bin size. The ASIC runs from a single 40MHz reference clock, can be configured very flexible. Reference clock is fed to a PLL generating an internal 1.28GHz, then split into 256 phases through a 64 element DLL and a resistive interpolation resulting in the 3.05ps...
The MIP Timing Detector (MTD) is a new sub-detector planned for the Compact Muon Solenoid (CMS) experiment at CERN, aimed at maintaining the excellent particle identification and reconstruction efficiency of the CMS detector during the High Luminosity LHC (HL-LHC) era. The MTD will provide new and unique capabilities to CMS by measuring the time-of-arrival of minimum ionizing particles with a...
In the last three years the TimeSPOT Collaboration has developed innovative silicon pixels allowing to reach a time resolution better than 20~ps on minimum ionizing particles. Such new devices are 3D silicon pixels with trench-shaped electrodes. They achieve such an outstanding time resolution thanks to both a highly uniform electric field inside the pixel and electrons and holes drift...
Currently, a majority of the research has been focused on LGAD stability and irreversible breakdown. Single event effect has been extensively researched in femtosecond laser studies at ELI Beamlines. In this presentation we will mainly focus on future activities aiming to aid us in bettering our understanding of the underlying mechanism causing the destruction. An overview of the present...
I will present the detectors systems, requirements and expected performance of the SOLID and ATHENA detectors time of flight systems.
LGAD sensors will be employed in the ATLAS High-Granularity Timing Detector and the CMS MIP Timing Detector upgrades to mitigate the high levels of pileup expected in the High-Luminosity phase of the LHC. Over the last several years, much attention has focused on designing radiation-tolerant gain implants to ensure these sensors survive the fluences expected, in excess of 1–2E15...
The MIP Timing Detector (MTD) of the Compact Muon Solenoid (CMS) will provide precision timestamps with 40 ps resolution for all charged particles up to a pseudo-rapidity of |η|=3. This upgrade will mitigate the effects of pile-up expected under the High-Luminosity LHC running conditions and bring new and unique capabilities to the CMS detector. The endcap region of the MTD, called the Endcap...
We report on the measurements of time resolution for double-sided 3D pixel sensors with a single cell of 50 µm × 50 µm and thickness of 285 µm, fabricated at IMB-CNM and irradiated with reactorn neutrons to different radiation doses up to 1e16 MeV neq/cm2.
Precise timing will be an important part of future detector upgrades in order to prepare particle physics experiments for the High-Luminosity LHC. The higher luminosity, which is essential to observe rare phenomena, is obtained through higher pile-up rates making it more difficult to distinguish between collisions. Precise time measurements will help tracking algorithms separate spatially...
Historically, transient current measurements mainly used single-photon absorption (SPA). In contrast, two-photon absorption (TPA) is limited to a small voxel and allows for three-dimensional imaging of the detector volume. TPA requires strong focusing optics to achieve beam waists of the order of micrometers. This small voxel enables the characterisation of the detector volume in detail. Using...
In this talk, we will describe the use of fast Silicon detectors and the fast sampling method in high energy physics and applications in medicine and cosmic ray physics.
