Mechanical workshop and Detector laboratory
The Mechanical Workshop (MW) of LIP was established in 1986, to support the experimental activities performed in collaboration with CERN. The workshop’s capabilities were recently improved with high performing machine tools and CAD-CAM software. The highly qualified staff of the MW performs a large spectrum of mechanical services, from project design to production and testing. Nowadays, the MW provides services not only to CERN related projects but also to research groups inside and outside LIP, and external companies.
In parallel, the detector laboratory (DL) was also created at LIP’s foundation, with the main aim of supporting the experimental activities developed at LIP. The laboratory has been continuously updated according to general and specific needs of research groups. The available equipment and technical staff, allow a variety of services, including the design, construction and repair of electronic circuits and vacuum systems, and the design, construction and testing of particle detectors.
During 2015 there were two main projects that required an important share of the available resources: the construction, assembly and test of Resistive Plate Chambers (RPC) detectors and related instrumentation for the LIP-Auger group, and the construction, assembly and test of the Umbilical Retrieval Mechanism (URM) for photomultiplier calibration in the SNO+ experiment. In addition to these other activities were carried out in support of several LIP projects and others: RPC-PET, LUX/LZ, SPACE/ESA, Neutron detectors, the construction of a spark chamber for CBPF, Brazil, the development of a cryostat for the Chemistry Department, etc. In 2015, the main external clients were Active Space Technologies (AST), Centro de Neuro- -Ciências (CNC), the Physics and Chemistry Departments of the University of Coimbra and the Institute of Systems and Robotics (ISR).
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TagusLIP was created in 2004 at the Lisbon Science and Technology Park (Taguspark) as a generic infrastructure for the development of nuclear medicine imaging technologies. It is installed in the modular building with a total of 400 m2 which includes office space for about 15 people, a meeting room for 20 people, two large laboratory spaces, electronics workshop, and a bunker for work with high activity sources. The TagusLIP laboratories are well equipped with general purpose equipment needed in the development and validation of large electronics and data acquisition systems. The PETsys start-up company has recently been using the TagusLIP infrastructure for the development and validation of Time-of-Flight PET technology. The company has assembled a TOF-PET demonstrator ring and performed the validation of the system using radiation sources.
e-CRLab (Cosmic rays electronics laboratory)
The e-CRLab is mainly dedicated to the development of electronics for Cosmic Ray experiments. The main focus is given to fast digital electronics implemented in FPGAs. The laboratory has the capability to design complex printed circuit boards and to produce simple printed circuit board (PCB) prototypes. The production of complex PCB and its assembly is outsourced. There is capability to do rework in PCB boards. A small set of mechanical tools allows the production of simple detector prototypes mainly for proofs of concept. In 2015 the e-CRLab had two main activity lines: The first one was developed within the Auger MARTA project to operate RPCs outdoors in the Argentine Pampa, and consisted in the development of the engineering prototype of the MARTA front-end electronics, based in the MAROC ASIC. The second activity line, in the framework of the SPACE project, was the development of the test procedure and test system for Co-60 irradiation in different conditions of several components, in the context of the preparation of the ESA mission to Jupiter. The e-CRLab also contributed to outreach and teaching. In the outreach context it has been involved in the development of AMU – A ver MUões, a small Cosmic Ray Telescope to be deployed in high schools. The e-CRLab also participated in the installation of experimental setups at IST for the Advanced Experimental Physics Laboratory.
LOMaC (Laboratory of Optics and Scintillating Materials)
The laboratory of scintillating materials was established in the framework of the ATLAS experiment, to provide support for detector R&D and construction. It focuses on the characterization of plastic scintillators and clear, scintillating and wavelength shifting (WLS) optical fibres. The laboratory was set up in collaboration with CFNCUL (Centro de Física Nuclear da Universidade de Lisboa), where it was located. The laboratory was used to select radiation hard scintillators and WLS fibres for the ATLAS Tilecal calorimeter, and for the massive preparation and quality control of the WLS fibre sets used in the calorimeter.
By the time of the selection of the WLS fibres for the Tilecal, the laboratory contributed also to the construction of the DELPHI luminosity monitor STIC, with the selection, aluminization and quality control of its WLS fibres. The team was later requested to contribute to the ATLAS Luminosity detector ALFA with the preparation of scintillating fibres with a square cross section at a smaller scale and to the RD52/DREAM fibre calorimeter project, including also clear/non-scintillating optical fibers. Clear fibres for the calibration systems of Tilecal and SNO+ were also tested in this laboratory.
The laboratory is equipped for testing and preparation of scintillators, optical fibres, photomultipliers and related electronics. The main test setup is used for the characterization of plastic WLS or scintillating optical fibres in large numbers, using holders for the scan of up to 32 fibres at a time. It can use both direct radiation from a 90 Sr radioactive source to produce light in the fibres or use an additional scintillator as light source. There are additional setups to test scintillators and PMTs.
There are facilities for the preparation and aluminization of plastic optical fibres. The aluminization is done by magnetron sputtering technique and the facility allows the deposition of aluminium mirrors in the top of fibres with variable length up to 3 m.