Conveners
Detector Systems
- Christer Fröjdh (Mid Sweden University)
Detector Systems: 2
- Roelof de Vries (Malvern-PANalytical)
Detector Systems: 3
- Cinzia Da Via (University of Manchester (GB))
The European Spallation Source (ESS), currently under construction in Lund, Sweden has the goal to become the world’s leading neutron source for the study of materials. Fifteen neutron instruments are currently being built as part of the construction project, which started in 2013 with the completion of the Technical Design Report (TDR).
These instruments present numerous challenges for...
Fast neutron detection is often based on the neutron-proton elastic scattering reaction: the ionization caused by recoil protons in a hydrogenous material constitutes the basic information for the design and development of a class of neutron detectors. Although experimental techniques have continuously improved, proton-recoil track imaging remains still at the frontier of n-detection systems,...
The J- PET detector, which consists of inexpensive plastic scintillators, has demonstrated its potential in the studies of fundamental symmetries [1,2] and in applications to medical physics [3,4]. In recent years, a prototype with 192 plastic scintillators arranged in 3 layers has been optimized to register the multiple annihilation photons emitted in the decays of positronium atoms (Ps) [5]....
Hyperspectral X-ray systems such as those based on the HEXITEC[1] ASIC typically employ high readout framerates in order to capture single photon events. Each of these frames is also fully digitized using ADCs, rather than comparators and counters, which provides a full wideband deposited energy measurement for each pixel in each frame. The HEXITEC specifically has 80 × 80 pixels at 250 µm...
We have been developing silicon-on-insulator pixel detectors with a pinned depleted diode structure, named ``XRPIX'', for X-ray astronomy. XRPIX, using a reverse-biased p-type substrate, has a pinned, undepleted p-well at the back-gate surface under the buried oxide layer and a depleted n-well underneath the p-well. The latter has two important roles: one is to prevent leakage current from...
The MIMOSIS CPS will equip the Micro Vertex Detector of the Compressed Baryonic Matter experiment at FAIR. It is to combine a 5µs/5µm space and time resolution with a peak rate capability of 80 MHz/cm² and a tolerance to > 5 MRad and 1e14 neq/cm². Moreover, it is to tolerate ~ 1 kHz relativistic Au-ions from the beam halo. A first full size prototype, MIMOSIS-1, has been produced by IPHC...
The PERCIVAL soft X-ray 2-Megapixel CMOS imager has been developed by a collaboration of light sources and RAL to meet experimental needs at todays Synchrotron and FEL soft X-ray sources. Systems have been in operation at two collaboration facilities, and are currently under commissioning at two more.
First user experiments at FLASH and Petra III’s soft X-ray beamline P04 have demonstrated...
Development of Low Noise Pixels and Readout Architectures for Scientific Applications in a 180nm CMOS Image Sensor Process
I Sedgwick S Benhammadi, B Marsh, N Guerrini
Progress in the performance of CMOS Image Sensors (CIS) in recent years has been extremely rapid, especially in the area of low noise, where values below 1e- have been reported [1] [2] and are even commercially...
The latest iteration of the HEXITEC ASIC, HEXITEC$_{MHz}$ has utilised on-chip digitisation to accelerate frame rates by two orders of magnitude over its analog-readout based predecessor, now with 1 MHz continuous readout [1]. This advancement places significant demand on the capabilities of the accompanying readout hardware; an 80x80 pixel array with 12-bit resolution results in a continuous...
Inner trackers in high-energy experiments of the next generation must cope with unprecedented high rates and track densities. This poses the need for precise timing information at the pixel level (below 50 ps per hit), high readout frequency (several hundreds of kHz per pixel) and radiation hardness (more than 1 Grad on electronics and more than 1016 1-MeV equivalent neutrons per cm2 on...
LHCb has recently submitted a physics case for an Upgrade II detector to begin operation in 2031. The upcoming upgrade is designed to run at instantaneous luminosities of $1.5\times10^{34}cm^{−2}s^{−1}$, to accumulate a sample of more than 300 fb$^{−1}$. The LHCb physics programme relies on an efficient and precise vertex detector (VELO). Compared to Upgrade I, the data output rates, radiation...
In the high-luminosity era of the Large Hadron Collider, the instantaneous luminosity is expected to reach unprecedented values, resulting in up to 200 proton-proton interactions in a typical bunch crossing. To cope with the resulting increase in occupancy, bandwidth and radiation damage, the ATLAS Inner Detector will be replaced by an all-silicon system, the Inner Tracker (ITk). The innermost...
The LHC machine will be upgraded to increase its peak luminosity ( $5-7.5x10^{34} cm^{-2}s^{-1}$) and to possibly reach an integrated luminosity of $3000-4000\;$fb$^{-1}$, with an average number of pileup events of 140-200. The CMS experiment is called for an upgrade to keep up with the new challenges such as unprecedented radiation environment, bringing to high resilience needs, and increased...
During the second long shutdown of the LHC, the ALICE Inner Tracking System (ITS) has been replaced with a full-pixel detector entirely built with CMOS monolithic active pixel sensors (ITS2).
The ITS2 consists of three inner layers with 50 um thick sensors and four outer layers with 100 um thick sensors. The entire tracker covers 10 m^2 and includes approximately 12.5 billion pixels with a...
