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Job Code PH118
Description
Description (Control Module) ATLAS is the only detector in the world where persons will go inside during shutdown periods. During the maintenance periods it is expected that up to 150 people could be present in the cavern at the same time, most of them working inside the intricacies of the detector and completely hidden and invisible from outside. In case of emergency, it could be extremely difficult and dangerously long for a rescue team to locate every person who could be in danger. Under these circumstances, a granular system for finding persons is then mandatory. The system must cope with the harsh environment and must be totally passive (no badges or other active equipment should be worn) to avoid voluntary or casual deactivation. FPIAA (Finding Persons Inside ATLAS Areas)is based on a large number (at the present about 400) of PIR (Passive InfraRed) sensors, each one detecting the presence of a person in a relatively small volume (~ 30 m3) and distributed to cover the most critical locations in the cavern. The goal of this job is to acquire all sensor data from a CAN fieldbus timestamp it and stored in a real time database which should be kept alive for years without interruption. The FPIAA application would access to this data and generate the necessary alarms, but the system should be built in such a way that even if FPIAA software crashes, the data acquisition and storing would never be interrupted. To understand the goals of ATLAS experiment see http://atlas.ch/movie/index.html.
Special Requirements
Also Electrotechnical, Computer Science Engineering, or Phisicist with similar experience Special Requirements Basic knowledge CAN fieldbus, OPC server and clients, realtime databases, supervision systems like PVSS.
Training Value
The applicants will work in a very competitive, international and of the most advanced computing environments and use state of the art technology.
Supervisor
GIANPAOLO BENINCASA

Job Code PH127
Description
The Tile Calorimeter is a sub-system of the ATLAS experiment, one of the experiments of the LHC collider. The Tile calorimeter is built in three cylindrical sections, two 3 m long sections and one 6 m long section. Each cylinder is built by joining 64 modules. Most of the front end electronics is installed in drawers in the outer part of the modules, and is controlled remotely mainly using CANbus protocol and a SCADA distributed system running in several PCs. The context of the job offer is to be integrated in the team in charge of the control of systems such as low voltage power supplies, high voltage power supplies, cooling, etc, and keeping these controls integrated in the global control system of the ATLAS experiment and always operational. The data collected by the control system is recorded in Oracle databases and needs to be analyzed in depth to understand the way each equipment operates. At the same time, a surface lab equipped with part of the systems that are running in the detector in the cavern is being developed, to be used for prototyping, repairs and studies of the systems that are in operation at the detector. For such a task, commercial tools as well as tools developed at CERN are used. By being involved in this project, it is possible to get an overall view of the execution of an electronics control and monitoring project. Last "state of art" resources will be applied for these tasks. The candidate will take part in the analysis of the data collected by the monitoring system and will interact with the physicist teams that will be running the detector and will have to coordinate actions with them.
Special Requirements
Degree in Electronics or Software Engineering
Training Value
To get skills on concurrent engineering
Supervisor
ANA MARIA HENRIQUES CORREIA

Job Code PH1623
Description
Design of communications integrated circuits The candidate will work at CERN in the micro-electronics section for a period of two years. He/she will be involved in the development of a high speed data communications ASIC that will be used in the future SLHC experiments. The engineer will use a mix of full-custom and standard cell design techniques and will be involved on the design of variety of circuits such as phase-locked loops, serializers, clock recover circuits, high speed line drivers and on the design of digital logic. Additionally, the engineer will be also involved on evaluation testing of the ASIC.
Special Requirements
A university degree in electronics engineering is required. The candidate should have understanding of analogue electronics and communication circuits. The candidate should be acquainted with the use of CAD tools for full-custom ASIC design. Knowledge of Verilog or VHDL hardware programming languages would be considered as an asset.
Training Value
The candidate will be integrated in an electronics engineering group for which the main activity is ASIC design. The candidate will develop skills on the design of analogue and communications circuit, will become proficient on the use of full-custom and standard cell design CAD tools and will learn and use equipment for ASIC characterization and evaluation testing.
Supervisor
PAULO RODRIGUES SIMOES MOREIRA

Job Code PH2602
Description
The Tile Calorimeter is a sub-system of the ATLAS experiment, one of the experiments that operate at the CERN LHC collider. The Tile calorimeter is built in three cylindrical sections, two 3 m long sections and one 6 m long section. Each cylinder is built by joining 64 modules. Most of the front end electronics is installed in drawers in the outer part of the modules, and is controlled and monitored remotely mainly using CANbus protocol and a SCADA distributed system running in several PCs. The context of the job offer is to be integrated in the team in charge of the control of systems such as low voltage power supplies, high voltage power supplies, cooling, etc, and keeping these controls integrated in the global control system of the ATLAS experiment and always operational. The data collected by the control system is recorded in Oracle databases and needs to be analysed in depth to understand the way each equipment operates. At the same time, a surface lab equipped with part of the systems that are running in the detector in the cavern is operational and is used for prototyping, repairs and studies of the systems that are in operation at the detector. For such a task, commercial tools as well as tools developed at CERN are used. By being involved in this project, it is possible to get an overall view of the execution of an electronics control and monitoring project. Last "state of art" resources will be applied for these tasks. The candidate will take part in the analysis of the data collected by the monitoring system and will interact with the physicist teams that will be running the detector and will have to coordinate actions with them.
Special Requirements
Electronics engineering, software or physics engineering
Training Value
Gain experience in control systems, electronics and software
Supervisor
ANA MARIA HENRIQUES CORREIA

Job Code PH2822
Description
Tilecal is the central hadronic calorimeter of the ATLAS experiment for the LHC. The Trigger and Data Acquisition software used in its operation is common to all ATLAS. On top of it, the Tilecal online software is used to control and monitor the specific detector electronics. The front-end electronics which are located in the outer most part of the detector, sample and digitize the signals from approximately 10000 channels at a rate of 40 MHz. The trigger signals gathered from the calorimeters and the muon chambers are processed by the Central Trigger Processor and provide a maximum Level 1 trigger rate of 100 kHz to the different detectors which are then responsible for the read-out of the events from the event pipelines. The Read-Out Drivers (ROD) in the back-end electronics are responsible for the reconstruction of the energy and time of the signals deposited in each read-out channel, and transmit the data to the Read-Out Buffers of the Level 2 trigger. The back-end electronics also host the infrastructure for the monitoring of the detector, where dedicated tasks perform quality checks on the data sampled at a Level 1 rate and on the data sampled after the Level 2 trigger decision. During the current operation for a period of 18 to 24 months, the luminosity is expected to gradually increase the Level 1 trigger rate up to 75 % of its nominal value. This initiates a process of fine tunning of the Tilecal online software, where the main goal is to achieve the maximum data taking efficiency, as it is a key point to the scientific success of the experiment. The candidate will participate in the optimization of the reconstruction algorithm in the RODs and improvement of the sampling rate of the monitoring tasks in order to assess the quality of the data.
Special Requirements
Degree in engineering with interest in data acquisition in high energy physics
Training Value
Gain experience in practical aspects of data acquisition in high energy physics
Supervisor
CARLOS ANTONIO SOLANS SANCHEZ

Job Code PH2842
Description
To participate in the development of custom DC-DC converters for Trackers at the Super LHC. The front-end DCDC converters need to be optimized for minimum noise emission and size, and they need to be tolerant to intense magnetic fields and to high levels of radiation. Prototypes of these converters have been produced: they need to be characterized and tested with front-end systems. The compatibility between the converters and the systems needs to be studied.
Special Requirements
Design of power electronics. Remote control of instruments. Computing for data analysis.
Training Value
The project will bring the trainee in the field of electromagnetic compatibility of front-end electronics for particle detectors, which is of primary importance for the SLHC experiments. Also, the tests of DCDCs offers the possibility to learn the design and operation of different types of front-end electronics systems. The work will be performed in close collaboration with the radiation tolerant power ASICs designers at CERN.
Supervisor
GEORGES BLANCHOT

Job Code TE1843
Description
Description of the proposed activity (over 3 years) : the activity will be in the framework of LINAC4 at CERN. The activity will involve electromagnetic modelling, magnetic measurements and electronic instrumentation in close collaboration with a small team of specialised engineers, technicians and mechanicians. The chosen candidate shall at first get familiar with the magnetic measurement systems being developed or adapted for Linac4, mainly based on harmonic coils (rotating or pulsed), by participating to their commissioning and metrological characterization. As the prototype and series magnets arrive at CERN, the candidate shall then take charge of the magnetic acceptance and qualification tests, including: preparation of magnet and calibration of the instrument; execution of the harmonic tests in the various configurations required; computer analysis and validation of the test data; compilation of a written test report; storage of numerical data in the appropriate databases. Test results for the different families of magnets shall be analysed statistically and interpreted, according to suitable magnetic models, to provide feedback to magnet design, manufacturing and beam physics.
Special Requirements
University degree in physics or engineering
Training Value
The chosen candidate will gain an extensive practical experience in a world-class accelerator metrology laboratory mixing together theoretical and industrial aspects. He or she shall be exposed to cutting-edge technologies and methods in different disciplines such as electromagnetism, computer data acquisition and treatment, high precision electronic instrumentation.
Supervisor
MARCO BUZIO