Infrastructure for Detector Research and Development towards the International Linear Collider

The EUDET-project was launched to create an infrastructure for developing and testing new and advanced detector technologies to be used at a future linear collider. The aim was to make possible experimentation and analysis of data for institutes, which otherwise could not be realized due to lack of resources. The infrastructure comprised an analysis and software network, and instrumentation infrastructures for tracking detectors as well as for calorimetry.Comment: 54 pages, 48 picture

Shower development of particles with momenta from 15 GeV to 150 GeV in the CALICE scintillator-tungsten hadronic calorimeter

We present a study of showers initiated by electrons, pions, kaons, and protons with momenta from 15 GeV to 150 GeV in the highly granular CALICE scintillator-tungsten analogue hadronic calorimeter. The data were recorded at the CERN Super Proton Synchrotron in 2011. The analysis includes measurements of the calorimeter response to each particle type as well as measurements of the energy resolution and studies of the longitudinal and radial shower development for selected particles. The results are compared to Geant4 simulations (version 9.6.p02). In the study of the energy resolution we include previously published data with beam momenta from 1 GeV to 10 GeV recorded at the CERN Proton Synchrotron in 2010.Comment: 35 pages, 21 figures, 8 table

The Time Structure of Hadronic Showers in highly granular Calorimeters with Tungsten and Steel Absorbers

The intrinsic time structure of hadronic showers influences the timing capability and the required integration time of hadronic calorimeters in particle physics experiments, and depends on the active medium and on the absorber of the calorimeter. With the CALICE T3B experiment, a setup of 15 small plastic scintillator tiles read out with Silicon Photomultipliers, the time structure of showers is measured on a statistical basis with high spatial and temporal resolution in sampling calorimeters with tungsten and steel absorbers. The results are compared to GEANT4 (version 9.4 patch 03) simulations with different hadronic physics models. These comparisons demonstrate the importance of using high precision treatment of low-energy neutrons for tungsten absorbers, while an overall good agreement between data and simulations for all considered models is observed for steel.Comment: 24 pages including author list, 9 figures, published in JINS

Software Tests and Simulations for Control Applications Based on Virtual Time

Ensuring software quality is important, especially for control system applications. Writing tests for such applications requires replacing the real hardware with a virtual implementation in software. Also the rest of the control system which interacts with the application must be replaced with a mock. In addition, time must be controlled precisely. We present the VirtualLab framework as part of the Chimera Tool Kit (formerly named MTCA4U). It has been designed to help implementing such tests by introducing the concept of virtual time, and combining it with an implementation basis for virtual devices and plant models. The virtual devices are transparently plugged into the application in place of real devices. Also tools are provided to simplify the simulated interaction with other parts of the control system. The framework is designed modularly so that virtual devices and model components can be reused to test different parts of the control system software. It interacts seamlessly with the other libraries of the Chimera Tool Kit such as DeviceAccess and the control system adapter

Implementing a ReboT Server on a Microblaze

Data acquisition over an IP network is convenient for diagnostics, monitoring and control applications. The ReboT protocol (Register Based Access Over TCP) extends the MTCA4U deviceaccess framework, letting it access supported hardware over TCP/IP. Using ReboT, the Python and Matlab bindings provided by the framework give application developers a convenient way to access hardware over the network. The poster discusses the server side implementation of ReboT on a Microblaze soft core. We present our experience implementing the code on the Microblaze using FreeRTOS and the Netconn API of the LWIP stack. We also compare network performance against an implementation realized using the Xilinx kernel and the socket API of the LWIP stack