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Abstracts Brochure - CERN

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TUPLS132<br />

TUPLS133<br />

TUPLS134<br />

27-Jun-06 16:00 - 18:00 TUPLS — Poster Session<br />

Estimation of the Energy Deposited on the CNGS Magnetic Horn and Reflector<br />

In the CNGS installation two magnetic<br />

L. Sarchiapone, A. Ferrari, M. Lorenzo Sentis (<strong>CERN</strong>)<br />

lenses, namely the horn and the reflector,<br />

focus the secondary beam generated in the<br />

target station. The gap between the horn and reflector is chosen to optimize a wide-band high-energy muon-neutrino<br />

beam. These two focusing elements are two coaxial lenses similar in length but different in shape: the outer<br />

conductor has a cylindrical shape whereas the inner conductor consists of a sequence of conical shapes to optimize<br />

the focusing capacity. The evaluation of the heat load on the support structures is crucial since modifications in the<br />

elements around the horn and reflector are under way and the support structures can be adapted to the heat load<br />

found. Furthermore, the heat load in the whole horn area has been evaluated to optimize the cooling-ventilation<br />

system. The FLUKA geometry input of the horn and reflector electrical connections has been notably improved in<br />

order to accommodate the detailed striplines design to the thermal expansion. The energy deposited on the horn and<br />

reflector as well as on their adjacent elements has been estimated using the FLUKA Monte Carlo package and results<br />

are presented in this document.<br />

Material Irradiation Damage Studies for High Power Accelerators<br />

N. Simos, H.G. Kirk, L.F. Mausner, J.G. O Conor (BNL) K.T. Mc-<br />

Donald (PU) L.P. Trung (Stony Brook University)<br />

260<br />

High-performance targets intercepting multi<br />

MW proton beams are the key toward intense<br />

muon or neutrino beams. To achieve<br />

this goal one must push the envelope of the<br />

current knowledge on material science and material endurance and survivability to both short and long proton beam<br />

exposure. The demand imposed on the targets of high power accelerators and the limitations of most materials in<br />

playing such pivotal roles have led to an extensive search and experimentation with new alloys and composites.<br />

These new high-performance materials and composites, which at first glance, appear to possess the right combination<br />

of properties satisfying target requirements, are explored under accelerator target conditions where both shock and<br />

irradiation damage are at play. Results of the on-going, multi-phased experimental effort under way at BNL involving<br />

heavy irradiation of candidate materials using 200 MeV protons at the end of the BNL Linac as well as results on postirradiation<br />

analysis assessing irradiation damage are presented.<br />

Managing the Quality Assurance Documentation of Accelerator Components at XFEL and<br />

PETRA III<br />

Quality assurance (QA) documents are often<br />

L. Hagge, J.A. Dammann (DESY)<br />

collected locally on a per-component basis<br />

by the manufacturing teams, while project<br />

engineers require global evaluations of the QA documents e.g. for production control or during installation and<br />

commissioning of the machine. DESY is using an Engineering Data Management System (EDMS) for supporting and<br />

unifying the QA documentation of different accelerator components. The EDMS provides dedicated user interfaces<br />

which are optimized for the needs of the specific engineering teams which are working on the components (including<br />

industrial manufacturers), and at the same time integrates the QA documents into a central database for further overall<br />

analysis and applications. The poster introduces the general structure of QA procedures, describes the benefits of<br />

using an EDMS for QA documentation and reports experience from different applications at XFEL and PETRA III.

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