About this Research Topic
Calorimeters belong to the most important instruments to measure the energy of neutral and charged particles produced with cosmic rays or with particle accelerators. They provide the means to explore new physics in an energy range from several eV to more than hundreds of GeV. Starting with the small scintillating crystals that were used as nuclear gamma ray detectors, to the multi-ton instruments that form the heart of modern experiments at colliding-beam accelerators, their development was very much driven by the quest for new frontiers in astro and particle physics. Operational fields are wide: from cryogenics, space, and high radiation environment. Although originally conceived as devices for energy measurement, they can be used to determine the shower position and direction, to identify different particles (for instance, to distinguish electrons and photons from pions and muons based on their different interactions with the detector), and to measure the arrival time of the particle. Calorimeters are also commonly used for trigger purposes, since they can provide fast signals that are easy to process and to interpret.
Calorimeters are divided into two main categories, homogeneous and sampling. The best compromise between these two technologies is studied to optimize experimental requirements and minimize the drawbacks associated with the limitations of standard solutions. The most recent technological developments allow us to get rid of this rigid distinction in favor of novel architectures. The modern tracking systems provide very accurate reconstruction, so the jet performance in particle flow-like reconstruction algorithms is usually limited by the calorimeter performance. A high granularity detector is necessary to distinguish signal particles from the background and solve the substructures to enable jet identification. The timing measurement in the calorimeter could play a relevant role in modern high-luminosity experiments that expect to record collisions with high pileups. In addition to that, the timing information improves the assignment of the calorimetric clusters to the corresponding interaction vertexes. The timing information is also relevant for removing fake signals produced synchronously or asynchronously with the bunch-crossing event. The calorimeter energy resolution is also fundamental to measuring the kinematic properties of jets.
The goal of this Research Topic is to receive high quality papers, as a way to increase the know-how of the calorimetry technique. Particular relevance themes are:
- detectors' radiation hardness
- innovative detectors' geometry
- light's transmission technique and photodetectors
- calibrations strategy
- fast acquisition systems
Calorimeters are divided into two main categories, homogeneous and sampling. The best compromise between these two technologies is studied to optimize experimental requirements and minimize the drawbacks associated with the limitations of standard solutions. The most recent technological developments allow us to get rid of this rigid distinction in favor of novel architectures. The modern tracking systems provide very accurate reconstruction, so the jet performance in particle flow-like reconstruction algorithms is usually limited by the calorimeter performance. A high granularity detector is necessary to distinguish signal particles from the background and solve the substructures to enable jet identification. The timing measurement in the calorimeter could play a relevant role in modern high-luminosity experiments that expect to record collisions with high pileups. In addition to that, the timing information improves the assignment of the calorimetric clusters to the corresponding interaction vertexes. The timing information is also relevant for removing fake signals produced synchronously or asynchronously with the bunch-crossing event. The calorimeter energy resolution is also fundamental to measuring the kinematic properties of jets.
The goal of this Research Topic is to receive high quality papers, as a way to increase the know-how of the calorimetry technique. Particular relevance themes are:
- detectors' radiation hardness
- innovative detectors' geometry
- light's transmission technique and photodetectors
- calibrations strategy
- fast acquisition systems
Keywords: Calorimeter detectors, Photosensors, Crystals, sampling
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.
