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| TUBZ01 |
The Beam Diagnostics System for J-PARC Synchrotrons
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128 |
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- N. Hayashi, S. H. Hiroki, K. Satou, R. Toyokawa
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken
- D. A. Arakawa, Y. Hashimoto, S. Lee, T. Miura, T. Toyama
KEK, Ibaraki
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The beam diagnostics system for J-PARC synchrotrons (RCS and MR) will be presented. The design of the system will be described for high current machines. Some test results will be reported.
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| TUBZ02 |
OTR Detectors for Intense Proton and Antiproton Beams at FNAL
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0 |
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- V. E. Scarpine, G. R. Tassotto
Fermilab, Batavia, Illinois
- A. H. Lumpkin
ANL, Argonne, Illinois
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Fermi National Acceleratory Laboratory (FNAL) is developing Optical Transition Radiation (OTR) detectors for proton and antiproton beam profile monitors. These OTR detectors are part of the collider Run II upgrade program and the NuMI primary proton beamline. The OTR detectors utilize radiation-hardened CID cameras and variable optics to measure 120 GeV protons and 150 GeV antiprotons over a wide range of beam intensities in both beam directions. This talk will discuss the resolution and 2-D imaging advantages of these detectors over standard wire detectors. Also presented are recent results from our production OTR detectors and measurements from our prototype OTR detector that was used to measure beams of up to 5·1012 120 GeV protons at 0.5 Hz. Different type of transition foils are discussed for operation over intensity range of ~5·109 to over 1·1013 particles per pulse.
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| TUBZ03 |
Tests of High Temperature Intense Neutron Target Prototype.
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0 |
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- K. Gubin, A. V. Antoshin, M. S. Avilov, D. Bolkhovityanov, S. Fadeev, M. G. Golkovsky, N. N. Lebedev, P. V. Logachev, P. Martyshkin, S. Shiyankov
BINP SB RAS, Novosibirsk
- O. Alyakrinsky, L. B. Tecchio
INFN/LNL, Legnaro, Padova
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In the framework of European program to develop a second generation of accelerator complex for Radioactive Ion Beam (RIB) production, Legnaro National Laboratory (LNL) proposed the construction of national facility for RIB generated by fast neutrons on two-step ISOL technique – SPES project. Protons/deuterons of 40 MeV (150 kW) will produce on converter about 1014 neutrons per second centered at around 14 MeV that will induce fission in a suitable fissile target, with the aim of 1013 fission per second at least. A rotating wheel equipped with converter made from 12C and 13C graphite, cooled mainly by thermal radiation has been chosen as neutron production target. The target prototype for nominal beam power 50 kW and 1 cm beam diameter was created and tested under high-power electron-beam. The prototype was successfully stood more than 80 h at nominal condition and short time at 70 kW (140 % on nominal). The design of prototype and main results of performed tests are presented.
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| TUBZ04 |
Experimental Studies of Targets and Collimators for High Intensity Beams
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143 |
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- N. Simos, H. G. Kirk, J. G. O Conor
BNL, Upton, Long Island, New York
- K. T. McDonald
PU, Princeton, New Jersey
- N. V. Mokhov
Fermilab, Batavia, Illinois
- L. P. Trung
Stony Brook University, Stony Brook
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Intense muon or neutrino beams require high-performance targets intercepting multi MW proton beams. To achieve it one must push the envelope of the current knowledge regarding material behavior and endurance for both short and long exposure. It is also true for collimator structures intercepting the halo of the intense beam under normal or the entire beam during off-normal conditions. The limitations of most materials in playing such pivotal roles have led to an extensive search and experimentation with new alloys and composites that, at first glance, appear to possess the right combination of properties satisfying target and /or collimation requirements. In this study, a number of new and “smart” materials are experimentally evaluated for resilience to radiation damage and potential use in target and collimation schemes. These include targets for the muon collider and the neutrino superbeam as well as LHC collimation. Results of the on-going experimental effort under way at BNL and involving heavy irradiation of candidate materials using 200 MeV proton beams and post-irradiation analysis for irradiation damage assessment will be presented.
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