lasa interneLASA
Laboratorio Acceleratori e Superconduttività
Sezione di Milano

Superconducting Magnets


The magnet Group of LASA for over 35 years produces superconducting magnets for particle accelerators and detectors, participating as the main protagonist or as a partner to large international projects in the world of frontier research for accelerators.

The group's expertise is for the study, design, construction and testing of superconducting magnets, with consolidated experience on: electromagnetic design, mechanical, cryogenic, diagnostics, quench protection, etc.

Currently the magnet group is involved in important international programs:

- High Luminosity LHC, to increase, since 2021, the luminosity of the LHC beams (co-financed by the EC - FP7 HiLumi).

- Eucard2 (funded by the EC - FP7) for the development of magnets using high-temperature superconductors, for future accelerators.

- EuroCirCol & Future Circolar Collider (FCC), the study of a new Large Hadron Collider (circumference length 100 km) which will continue the high-energy physics after the LHC and HiLumi LHC.


Developed in conjunction with Joomla extensions.

The toroidal magnet of the ATLAS detector


“Phases during assembly of the large toroidal magnet of the ATLAS detector of LHC. The torus is composed of eight superconducting coils, each 25 m long and 5 m wide. The LASA has played a major role in the design, construction and testing of 8 coils. The contracts of most of the conductor and all the reels were assigned to the Italian industry”

The basic and applied research in the field of superconducting magnets is driven by the need to get more and more intense and precise magnetic fields to maintain the trajectory of accelerated particles (protons or ions) to the extreme energies of the great circular accelerators or colliders.

The magnet assembly of LASA is currently composed of 4 researchers, 6 engineers, 1 PhD student and a variable number of students in physics who perform their thesis (experimental or computational) on our research activities. The LASA laboratory hosts important equipment, with a broad spectrum of capabilities, such as measurements of critical currents up to 30,000 A in the presence of high magnetic fields, thermal conductivity measurements and mechanical properties at cryogenic temperatures and much more.


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The fast pulsed superconducting dipole


“Preparation phases for the test at LASA of the fast pulsed, 4 m long superconducting dipole”

Phone Number: +39 02 503 followed by the personal extension numbers indicated in the table below.

# Surname Name Extension
1 Alessandria Franco 19548
2 Bellomo Giovanni 19547
3 Broggi Francesco 19576
4 Leone Augusto 19527
3 Marinozzi Vittorio 19529
5 Paccalini Antonio 19523
6 Pedrini Danilo 19551
3 Quadrio Mauro 19550
7 Sorbi Massimo 19571
8 Todero Maurizio 19547
9 Volpini Giovanni 19541

HL-LHC - High Luminosity Large Hadron Collider

 

The "High Luminosity Large Hadron Collider" (HL-LHC) project aims to crank up the performance of the LHC in order to increase the potential for discoveries after 2025. The objective is to increase luminosity by a factor of 10 beyond the LHC’s design value.
Luminosity is an important indicator of the performance of an accelerator: it is proportional to the number of collisions that occur in a given amount of time. The higher the luminosity, the more data the experiments can gather to allow them to observe rare processes. The High-Luminosity LHC, which should be operational by 2025, will allow precise studies of the new particles observed at the LHC, such as the Higgs boson. It will allow the observation of rare processes that are inaccessible at the LHC’s current sensitivity level. For example, the High-Luminosity LHC will produce up to 15 million Higgs bosons per year, compared to the 1.2 million produced in 2011 and 2012.

February 2016: sextupole ready for test in LASA (left picture)

The LASA magnet group participate to HL-LHC project designing, building and testing 5 different types of superconducting magnets:the High Order Corrector Magnets. They are special magnets necessary to correct the imperfections in field quality of the other main magnets. They are the Quadrupole skew, the Sestupole normal and skew, the Octupole normal and skew, the Decapole normal and skew and the Dodecapole normal and skew.

Sextuple Protoype

January 2016 Sextupole near the end of the assembly process (INFN-LASA)

High Luminosity LHC Website

EUCARD2

 

Il progetto EuCARD-2 is an Integrating Activity Project for coordinated Research and Development on Particle Accelerators, co-funded by the European Commission under the FP7 Capacities Programme. This project will contribute to positioning European accelerator infrastructures at the forefront of global research.
The project has 40 partners from 15 European countries, including Russia. The list of partners include 10 accelerator laboratories, 23 technology institutes/universities, 5 scientific research institutes and 2 industrial partners.

The LASA magnet group participates to the program testing in the LASA infrastructures a superconducting dipole magnet wound with high temperature superconductor. This magnet will demonstrate the capabilities to use high temperature superconductors for the future generations of colliders for high energy physics.

The LASA team is also involved in simulation and study to develop new materials able to resist to hard radiation exposure in accelerator enviroment.


Eucard2 Website

EuroCirCol & Future Circolar Collider

 

EuroCirColis a conceptual design study for a post-LHC research infrastructure based on an energy-frontier 100 TeV circular hadron collider.
A new research infrastructure of such scale depends on the feasibility of key technologies pushed beyond current state of the art. Innovative designs for accelerator magnets to achieve high-quality fields up to 16 T and for a cryogenic beam vacuum system to cope with unprecedented synchrotron light power are required. The effects of colliding two 50 TeV beams must be mastered to meet the physics research requirements. Advanced energy efficiency, reliability and cost effectiveness are key factors to build and operate such an accelerator within realistic time scale and cost.
This European Community supported project is part of the Future Circular Collider study under European leadership, federating resources worldwide to assess the merits of different post-LHC accelerator scenarios. It forms the core of a globally coordinated strategy of converging activities.

The main outcome of EuroCirCol, a Conceptual Design Report for the research infrastructure, will be laying the foundation of subsequent infrastructure development actions that will strengthen the frontier knowledge and technologies over the next decades.

The LASA magnet group is encharged in EuroCirCol activity designing a new superconducting dipole at high magnetic field (beam bore field 16 T) using Nb3Sn cable.

Electromagnetic Design

Electromagnetic design of the superconducting dipole magnet, double aperture, 16 T for EuroCircol

EuroCirCol & Future Circolar Collider (FCC) Website

Group Past Experiences

The beginning experience in the design of superconducting magnets has its roots in 1981, with the design and construction of the superconducting cyclotron (later installed at the National Laboratory of South INFN, Catania). In 1985-1990 the LASA designs and follows the construction of the thin superconducting solenoid for the ZEUS Detector of electron-proton collider HERA at DESY. In the first part of the 90s, the LASA group is responsible for the development and construction of the first long prototypes of the LHC superconducting dipoles, whose full success of the tests contributed to the first approval and launching of the construction of LHC, and allowed to Italian industry to take on a very first important position in the construction of the LHC.


From 1996 to 2004, the group devotes continuously in the design, construction, testing and commissioning of the large toroidal magnet of the ATLAS detector, the great experiment of the LHC which, along with the CMS detector, has discovered the Higgs boson.

From 2007 to 2012, the LASA, with INFN Sections of Genoa and Salerno, is responsible for the development and construction of a superconducting dipole rapidly pulsed for the FAIR facility at GSI (Darmstadt, Germany). The magnet 4 m long, with a peak field of 4.5 T and with a ramp rate of 1 T / s, was built by Italian industry and has been successfully tested in our laboratory in 2012.