Conveners
DRD8 Session 3
- Paolo Petagna (CERN)
- Oscar Augusto De Aguiar Francisco (The University of Manchester (GB))
- Bart Verlaat (CERN)
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Bart Verlaat (CERN), Oscar Augusto De Aguiar Francisco (The University of Manchester (GB))6/4/26, 3:15 PM
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Jan-Hendrik Arling (Deutsches Elektronen-Synchrotron (DE))6/4/26, 3:25 PM
Cooling via micro-channels (MCC) directly embedded in silicon as the sensitive detector material has many advantages and is as such interesting for future detector applications - including photon science detectors or large-scale high-energy physics experiments.
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With the start of DRD8, the established collaboration between CNM and DESY has gained new drive. In the first step, the... -
Javier Fernandez-Tejero (Institut de Microelectrònica de Barcelona (IMB-CNM, CSIC) (ES))6/4/26, 3:40 PM
New generation of vertex detectors must have excellent thermo-mechanical stability,
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and all-silicon ladders are considered as promising solutions for future detectors, such as
the forthcoming upgrade of the Belle II vertex detector in Japan. However, power
consumption asymmetries between the active area (sensor) and periphery (readout
electronics) can induce large temperature gradients... -
Simone Coelli (Università degli Studi e INFN Milano (IT))6/4/26, 3:55 PM
The cooling of some silicon vertex detector, like the LHCb VELO, is based on the technology of micro-channels, directly produced in the silicon underneath the read-out modules, that are the main heat sources. With CO2 boiling coolant the sensor can be operated at temperatures, i.e. -40°C, that take the detector safe from the thermal runaway point of view.
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The silicon wafer becomes a real... -
Anze Sitar6/4/26, 4:10 PM
The VErtex LOcator Upgrade II (VELO U2) detector, together with several other experiments at CERN, aims to advance our understanding of high-energy physics by employing advanced custom-made sensors integrated with an optimized electronic readout system (ASICs). These components require low operating temperatures and high cooling capacity in order to maintain high measurement precision and...
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Bianca Raciti (Centre National de la Recherche Scientifique (FR))6/4/26, 4:25 PM
Within the DRD8 framework, a French IN2P3 R&D program involving several institutes (LPSC, LEGI, CPPM and LPNHE) develops and studies advanced microchannel cooling technologies for silicon detectors.
The program includes the design and fabrication of micro-channel heat exchangers in Si-Si, Si-pyrex and other materials such as ceramics. In addition, alternative carbon micro-tube heat...
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Alessandro Mariotti (Università & INFN Pisa (IT))6/4/26, 4:40 PM
Future high-energy physics experiments require silicon tracking detectors with unprecedented spatial and timing precision while maintaining an extremely low material budget. Concepts for next-generation colliders such as the Future Circular Collider impose stringent constraints on the thermal management of vertex detectors. Advanced pixel technologies, including Monolithic Active Pixel Sensors...
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Benjamin Edward Pulver (Purdue University)6/4/26, 5:15 PM
Jet impingement is an efficient cooling method that sprays coolant directly onto the heat source. This removes the heat transfer impact of the support structure materials – including TIM – by allowing heat to pass unimpeded into the coolant. In data center and turbine blade cooling applications, jet impingement has been demonstrated to remove heat fluxes more than 300W/cm2. There is lack of...
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Prof. Carl Sangan (University of Bath (GB))6/4/26, 5:30 PM
As new members of DRD8 and the CMS collaboration, the University of Bath offers a broad, collaboration ready platform that spans experiment, design and computation, enabling rapid support across detector mechanics, cooling, materials, electronics and operations. At the core is IAAPS, a purpose-built research environment with configurable thermal and fluid test cells, adjacent control rooms,...
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Alexander Lunt (University of Bath (GB))6/4/26, 5:45 PM
This presentation will provide an introduction to the Additive Manufacture for Cooling Manifold Structures (AM4CMS) programme, outlining the objectives and early‑stage activities which will be completed by the team for the next two years. This initiation phase will establish the experimental and modelling foundations needed to enable the next generation of additively manufactured CO₂ cooling...
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Ms Camila Pedano-Medina (CERN)6/4/26, 6:00 PM
Supercritical carbon dioxide (sCO2) is characterised by low viscosity and a peak in specific heat capacity near the pseudo-critical point, making it a promising fluid for electronics cooling in the temperature range 31–50°C. However, systematic heat transfer data at the millimetre scale remain scarce, limiting the applicability of existing predictive correlations. The CO2-SASS experimental...
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Bart Verlaat (CERN)6/4/26, 6:20 PM
A novel cycle has been developed using an ejector driven by a compressor. This cycle gives a low quality 2-phase flow similar as the traditional 2PACL system provides. The advantage of this ejector system is that it can go lower in temperature than the liquid pumped 2PACL since there is no limitation with respect to the needed subcooling anymore. Where a 2PACL with CO2 is limited to -45°C, an...
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Bart Verlaat (CERN)6/4/26, 6:40 PM
Krypton has been identified as a candidate cooling fluid for the temperature range below the usable range of CO2. Krypton has a critical point of -63.7°C @ 55.3 bar and a normal boiling point of -153°C. In between this range Krypton can be used as 2-phase evaporative cooling, and above the critical point as a super critical single phase cooling. The CERN EP-DT-DC cooling group together with...
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