accelerating-news-arc.web.cern.ch - issue 4

CLIC now entering phase two

Margarita Synanidi — Wed, 26 Nov 2014 13:57:11 +0000

CLIC now entering phase two
by Katarina Anthony (CERN)

NCLinac (WP9 of EuCARD) includes improvements to the CLIC test facility CTF3 at CERN. Image credit: CERN

Building on the success of their feasibility phase, the CLIC test facility, CTF3, has just launched into a five-year project development phase. This will involve detailed performance optimisation studies, marking the project’s transition from pure research and development to prototyping and construction.

CTF3’s second phase will focus on selected performance-related research areas for further investigation. The largest of these involves the construction and testing of several authentic CLIC accelerator modules that are currently being assembled at CERN (see image).

Four of the CLIC modules will undergo mechanical testing in laboratory conditions, where they will have their alignment, stabilization and thermal cycling tested. These tests will be done over the next 2 years outside of the CTF3 facility. The remaining three modules will be installed in CTF3’s experimental area. Two further modules will be added in 2014, and will incorporate results from both the laboratory and CTF3 tests.

Alongside the module testing, the CTF3 team will be working to provide synchronicity between CLIC’s drive beam and its main beam. This is accomplished by compensating for any phase “jitters” by adjusting the path length of the drive beam. Phase monitors and a kicker system (which will adjust the beam path) are currently being installed in the facility, and the first system tests are planned for next summer.

Article originally in CERN Bulletin.
Reproduced with permission.

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issue 4

Accelerators for Society

Margarita Synanidi — Wed, 26 Nov 2014 13:51:04 +0000

Accelerators for Society
by Celine Tanguy (CEA)

Did you know that among the more than 26,000 particle accelerators currently in use worldwide, only 1% is used for research? Particle accelerators are vital instruments for both fundamental and applied research but they are also involved in a broad range of applications. A new brochure initiated within the TIARA preparatory phase invites readers to discover how accelerators benefit society.

Click here to have a look on the Accelerators for Society brochure.

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issue 4

Recent progress of the HiLumi project

Margarita Synanidi — Wed, 26 Nov 2014 13:39:23 +0000

Recent progress of the HiLumi project
by Lucio Rossi (CERN), Agnes Szeberenyi (CERN)

Group photo of the annual meeting participants. Image credit: Claudio Federici, INFN-LNF

A year has already passed since the launch of the High Luminosity LHC Design Study, which is the first step of the larger High Luminosity LHC (HL-LHC) project.

The 2nd Joint HiLumi LHC-LARP Annual Meeting took place on 14-16 November and was hosted by INFN-LNF. The event registered 130 participants, bringing together not only European and US LARP experts but also Japanese and Russian scientists.

The event reviewed the progress of design and R&D of the FP7 HiLumi Work Packages, and of the other HL-LHC WPs as well, and the progress towards a final lay-out of the accelerator upgrade. A dedicated session was organized for young scientists honoured the LARP Toohig fellowship. The plenary talks featured LARP, U.S. DoE and Japanese positions on HL-LHC as well.

The next joint Annual Meeting is planned to take place at Daresbury Laboratory of the Cockcroft Institute in November 2013, while in May 2013 the collaboration will meet at the joint LARP-HiLumi LHC annual meeting in the USA.

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EuCARD-2 approved by the EC

Margarita Synanidi — Wed, 26 Nov 2014 13:19:55 +0000

EuCARD-2 approved by the EC
by Agnes Szeberenyi (CERN)

Image credit: EuCARD-2

The EuCARD-2 Integrating Activity project has successfully completed the negotiation phase with the EU. It will have a total budget of 23M€ over 4 years, with 8M€ of EU contribution. The official start of the project is foreseen for 1st May 2013 in order to allow a smooth transition and continuity with the EuCARD project.

The project will be led by Maurizio Vretenar of CERN, and builds on the success-to-date of the EuCARD project. The project's full title - Enhanced European Coordination for Accelerator Research & Development - reflects the extended scope to include more participants and more work packages. It brings a global view to accelerator research, coordinating a consortium of 40 accelerator laboratories, technology institutes, universities and industry to jointly address common challenges. EuCARD-2 will include six networks on strategic topics to reinforce synergies between communities active at all frontiers, extending the scope towards innovation and societal applications. The networks concentrate on extreme beam performance, novel accelerator concepts with outstanding potential, energy efficiency and accelerator applications in the fields of medicine, industry, environment and energy. The EuCARD-2 kick-off meeting will be organised with the last EuCARD annual meeting on 10-14 June 2013 at CERN.

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issue 4

EUROnu: proposing future neutrino facilities at CERN

Margarita Synanidi — Wed, 26 Nov 2014 13:08:53 +0000

EUROnu: proposing future neutrino facilities at CERN
reported by Elene Wildner (CERN) and Rob Edgecock (STFC/RAL)

Comparison of error in delta measurement in the different neutrino facilities. Image credit: EUROnu

The EUROnu project studied three different “next generation” facilities that could be located at CERN. The final results and conclusions were delivered at the end of August 2012 after 4 years of prosperous work. The studies included the accelerators, the detectors and the physics performance and cost of the complete facilities.

Two studied facilities, the Super-Beam (SB) and the Beta-Beam (BB), are designed to send neutrino beams to a future Water Cherenkov detector located in the Fréjus tunnel, 130 km from CERN. Due to the short baseline, these two facilities have good sensitivity to the CP violation process. The SB can also, with great benefit for the physics reach, deliver a beam to a longer baseline (use of the second oscillation maximum), where the CP reach is good but also some access to the mass hierarchy is possible. The third facility studied in the EUROnu project, the Neutrino Factory (NF), would use a Magnetized Iron Neutrino Detector (MIND) located at more than 2000 km from CERN. This facility would have the best physics reach, able to determine both the neutrino mass hierarchy (the spectral order of neutrinos) and to study CP violation. In addition it would have the best potential to detect evidence of “new physics”.

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Superconducting Technologies for the Next Generation of Accelerators

Margarita Synanidi — Wed, 26 Nov 2014 13:03:52 +0000

Superconducting Technologies for the Next Generation of Accelerators
by Marina Giampietro (CERN), Lucio Rossi (CERN), Agnes Szeberenyi (CERN)

Fig1: High Luminosity LHC will rely on cutting-edge 13 Tesla superconducting magnets, very compact and ultra-precise superconducting cavities for beam rotation, and 300-metre-long high-power superconducting links with zero energy dissipation. Image credit: CERN

CERN, in collaboration with TIARA and HiLumi LHC European FP7 projects, organized the Workshop on Superconducting Technologies for Next Generation of Accelerators at the Globe of Science and Innovation on 4th and 5th December, 2012.

The 2-day event focused on key areas such as the development of high- and low-field superconducting magnets, superconducting cavities, cryostats and superconducting links.

The workshop was the one of a series of initiatives at CERN aimed at connecting research infrastructures, facing specific technical challenges, with potential commercial partners, for R&D collaborations and knowledge exchange. More than 100 specialists, about half from industry and half from research laboratories and institutes, met to exchange information on: technologies, processes, materials, facilities, work organization and training of next generation engineers and technicians. In the workshop talks form HiLumi LHC, TIARA and ESS were complemented by presentations and booth stands from companies in forefront research of superconductivity.

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R&D on C-band accelerators

Margarita Synanidi — Wed, 26 Nov 2014 10:35:40 +0000

R&D on C-band accelerators
by David Alesini (INFN-LNF) and Marica Biagini (INFN-LNF)

Fig1: Breakdown rates as measured at different field values before and after conditioning of the SPARC C-Band prototype. After processing, about 50 MV/m accelerating field has been reached, with a breakdown rate (BDR) per meter of the order of 10-6, which is a very good result in such structures. Image credits: INFN-LNF
Fig2: SPARC C-Band structure in the oven before brazing. Image credits: INFN-LNF

The use of Radio-Frequency C-Band accelerating structures for electron acceleration and production of high quality beams has been recently proposed and adopted in several linac projects all over the world.

Two important FEL projects have adopted such type of structures: the Japanese FEL project at SPring-8 and the Swiss-FEL project at the Paul Scherrer Institute (PSI). Even if this technology is less known with respect to the more consolidated S-Band one, beam dynamics calculations and experimental measurements demonstrated the possibility to reach high beam quality and higher gradients, making the C-Band technology very appealing from this point of view. Possibilities to use C-Band structures for hadron therapy are also under study from several years and seem to be very promising.

In the SPARC photo-injector facility at the INFN Frascati National Laboratories (LNF, Italy) an R&D programme on C-Band structures is being carried out in order to upgrade the beam energy from 150 to more than 250 MeV in the facility. Involving both LNF and PSI, this programme is performed within the High Gradient Acceleration (HGA) Work Package of the TIARA Preparatory Phase.

The choice of the C-Band for the energy upgrade was dictated by the opportunity to achieve a higher accelerating gradient, enabled by the higher frequency, and to explore C-Band acceleration combined with a S-Band injector that, from beam dynamics simulations, looks very promising. The energy upgrade of SPARC will be done by replacing one low gradient S-Band accelerating structure with two C-Band structures.

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