Frank Linde (NIKHEF (NL))
Georg Viehhauser (University of Oxford (GB))
As part of our R&D on cooling tubes for the barrel strip system of the ATLAS phase II tracker upgrade we have identified requirements and specifications for these tubes. One of the most important of these is the understanding of the pressure requirements. For this definitions and the subsequent calculations of required wall thickness by design by formula (DBF) we follow EN and ASME standards,...
26. Vacuum flex lines design, production, qualification and tests for the ATLAS IBL CO2 cooling system
Claudio Bortolin (CERN)
The Insertable B-Layer (IBL) is the innermost layer of the ATLAS pixel detector; it has been installed on a new beam pipe with reduced diameter and successfully inserted in the Inner Detector (ID) volume. The IBL is a fundamental detector to improve the vertex reconstruction and to provide an additional tracking layer in case of failure or radiation damage in the other three layers of the...
Jerome Daguin (CERN)
In CO2 evaporative detector cooling systems, the measurement of the mass flow rate is not always trivial. Not many instruments can be used in magnetic field or radiation environment and few of them can measure CO2 in two phase. After a brief review of the existing measurement techniques reported in literature, the presentation highlights the experience gained so far at CERN with a few mass...
Paolo Petagna (CERN)
For future Vertex detectors, where the requirements on material budget minimization and performance optimization will push at the limit the design and technology choices, thermal management solutions based on ultra-thin micro-channel heat exchangers are being envisaged. The NA62 GTK detector, launched in operation at the end of 2104 has demonstrated for the first time the practical...
Pawel Jalocha (University of Oxford (GB))
The LHCb Vertex Detector (VELO) will be upgraded in 2019 to a lightweight, pixel detector capable of 40 MHz readout and operation in very close proximity to the LHC beams. The thermal management of the vacuum-resident system will be provided by bi-phase CO2 circulating in micro channels embedded within thin silicon substrates onto which active elements are placed. This solution has been...
Nick Lumb (Universite Claude Bernard-Lyon I (FR))
The extreme pile-up conditions expected in the CMS detector during operation in the High Luminosity LHC (HL-LHC) necessitate the replacement of the entire tracking system during long shutdown 3 (LS3). New silicon modules with higher radiation tolerance and enhanced functionality will be installed. To further improve radiation resistance, the tracker will be operated at a lower temperature...
Sebastien Michal (Universite de Geneve (CH))
The Pixel ITK mechanics after having defined the engineering requirements is now considering new options for module and service local support for the barrel region. While targeting for a material budget as low as possible and a layout that ensures the perfect hermeticity, the module have to be able to safely operate with respect to the thermal run away effect in the silicon sensor whatever...
Rob Walet (N)
The upgrade of the complete LHCb detector will extend the physics reach of the experiment, by allowing it to run at higher luminosity with increased trigger efficiency. The tracking system behind the magnet will be replaced by a new Scintillating Fibre Tracker (SciFi), a modular array of 5 m long layers of scintillating fibers, consisting of six densely packed layers of round fibers with a...
Eric Anderssen (Lawrence Berkeley National Lab. (US))
Over the past two years a variety of topics in advanced materials and tools for instrumentation have been under study at LBNL. This talk will present results on thermally enhanced polymers and laminates, low mass foams, air cooling, and precision metrology for inspection and defect location. A broad survey of filler materials has been conducted, a protocol for thermal measurement developed,...
Burkhard Schmidt (CERN)
The LHCb Detector will undergo an upgrade during the LHC shutdown in 2019. The UT (Upgrade Tracker) is a silicon strip tracking detector being designed and constructed as part of this upgrade. The UT will provide a fast momentum measurement for the trigger as well as function as part of the overall tracking system where it will severely reduce the presence of “ghost” tracks. The UT Tracker...
Wouter Hulsbergen (Nikhef National institute for subatomic physics (NL))
The LHCb vertex detector (VELO) is shielded from the LHC beam by a thin envelope called the RF box. Tight constraints on maximum thickness, vacuum tightness, conductivity and rigidity make the construction of the RF box a challenge. We discuss progress in the construction of the RF box for the upgraded VELO detector, which is planned for installation in 2018.
Stefan Gruenendahl (Fermi National Accelerator Lab. (US))
A new forward pixel detector for the CMS experiment is currently under construction, for installation during the extended year end shutdown 2016/2017. I am reporting on the latest developments in mechanics and cryogenics, and progress with construction.
Mr Michiel de Schipper (Quadrant Engineering Plastics Products)
High tech applications mostly demand high-tech materials. As engineering plastics have evolved over time, they have become a great alternative to traditional materials such as metals in many applications. However each polymer has its specific advantages & limitations, and the use of fillers can even more influence the specific properties. During this presentation, I would like to provide...
Mr Emiel Amsterdam (National Aerospace Laboratory (NLR))
Additive manufacturing of metals offers great opportunities for the aerospace and high-tech industry, however it also faces serious challenges. Some of these challenges lie in the field of material science and quality control. This presentation gives an overview of the state of the technique, current applications in aerospace and the challenges that are being tackled in the Netherlands.
Pierre Rose (Ministere des affaires etrangeres et europeennes (FR))
PS (Pixel-Strip) modules and 2S (Strip-Strip) modules will be the detection devices used for the future phase 2 upgrade of the CMS Tracker. 7084 PS modules and 8424 2S modules would be integrated on different parts of the detector (TBPS, TB2S, Endcap Double-Disc) for more than 218 m² of active silicon sensor surface. Both modules are designed to be as light as possible to ensure minimal impact...
Marius Preuten (Rheinisch-Westfaelische Tech. Hoch. (DE))
For the Phase2-Upgrade of the CMS Silicon Tracker new double-sided modules are foreseen, providing track information to the first trigger stage of CMS. Hence two strip sensors, positioned on top of each other at a small distance (~3 mm), will be part of a single module, allowing for a combined readout using a single front-end-chip. From the correlation between hits in both layers within one...
Andreas Jung (Fermi National Accelerator Lab. (US))
The talk will discuss the thermal tests of a CMS Phase 2 prototype pixel-strip module carried out at Fermilab. The prototype is based on the common design and assembled using the same raw materials as foreseen for the production module. A rod support structure was also built to carry the prototype and provide a realistic cooling scheme via the CO2 test stand at Fermilab. Data results at...
Tobias Hubertus Tischler
The Compressed Baryonic Matter experiment (CBM) at the future FAIR facility at Darmstadt (Germany) explores the phase diagram of strongly interacting matter in the regime of highest net baryon densities with numerous probes, among them open charm. Open charm reconstruction requires a vacuum compatible Micro-Vertex Detector (MVD) with unprecedented properties, arranged in (up to) four planar...
Bernd Stefan Windelband (Ruprecht-Karls-Universitaet Heidelberg (DE))
The Mu3e collaboration is setting up an experiment to study the decay of a muon into three electrons μ+→e+e-e+ . Any observation of this decay with the Mu3e experiment would point to physical processes so far not described in the standard model, mediated by the exchange of very heavy particles. The Mu3e Experiment is a combination of three detector technologies. The main part is a High Voltage...
45. The ultralight mechanics and cooling system of a DEPFET-based pixel detector for future colliders
Ignacio Garcia (IFIC)
The DEPFET Collaboration develops highly granular, ultra-thin active pixel detectors for high-performance vertex reconstruction at future e+e- collider experiments. A fully engineered vertex detector design, including all the necessary supports and services and a novel ladder design with excellent thermo-mechanical properties, is being developed for the Belle II experiment. The self-supporting...
The cooling system of the BelleII vertex detector is based on the 2-phase accumulator controlled loop method with CO2 as the coolant. The DESY group is in charge of building a thermal mock-up in order to study and optimize the cooling system. This talk shows the design for this thermal mock-up and some results for the preliminary measurements.
Danilo Giugni (Università degli Studi e INFN Milano (IT))
The ATLAS cosmics run over the last month has revealed a stability issue in the mechanics of IBL detector. In particular a global and coherent rotation of the Z=0 detector cross section has been observed analyzing the alignment parameters of the muon tracks. Such instability affects the overall tracking performances. Understanding the causes of the deformation allows to set operation...
Gaia Maria Berruti (Universita del Sannio (IT))
Relative humidity (RH) monitoring has a significant impact in various application fields and many sensing schemes and solutions have been proposed according to the specific applications. Here we concentrate our attention on the use of RH fiber optic sensors (FOS) recently developed for application in the CMS experiment. Any humidity sensor to be introduced in the volume of a Tracking detector...
Didier Laporte (Centre National de la Recherche Scientifique (FR))
Obtaining accurate and quick estimates of the amount of material represented by a detector is essential in the design phase, especially for tracking detectors. It allows the designers to have a quick feed-back of the effect of the design choices on important aspects of the physics performance. The best available information on the detector geometry is the 3D CAD mockup. We will show through...
Jan Visser (Nikhef National institute for subatomic physics (NL))
The developments within the Medipix collaboration on hybrid pixel detectors for many applications outside the world of high energy physics over the last decade have led to interesting design features that are now being considered or even applied in tracking systems for ATLAS and LHCb. Especially, the development of chips with timing capabilities such as Timepix3 has triggered this return to...
Pascal Sainvitu (CERN)
The positions of the Inner Tracker (IT) detectors of the LHCb experiment installed in the LHC at CERN are impacted by the LHCb dipole magnet powering. In the past the movements of the stations have been measured using standard survey methods during magnet tests in shutdown periods. But the survey targets are visible only in very narrow spaces and the access to the IT is very difficult, even...