Progress on the MICE RF module at LBNL

The international Muon Ionization Cooling Experiment aims to demonstrate the transverse cooling of a muon beam by ionization interaction with absorbers and re-acceleration in RF cavities. The final MICE cooling channel configuration has two RF modules, each housing a 201 MHz RF cavity to compensate the longitudinal energy loss in the absorbers. The RF modules will be assembled and tested at LBNL before being shipped to and installed at RAL. This paper reports the recent progress on the manufacturing and testing of the RF module components, as well as the preparation for the final module assembly

Summary and preliminary results of work carried out by Sintef on Berm Breakwaters

Measurements of wave forces on single armour units, tests on berm breakwaters in shallow water.Berm Breakwater

HAVACILIKTA SÜRDÜRÜLEBİLİRLİK YÖNETİMİ: TÜRKİYE’DEKİ HAVA LİMANLARI İÇİN SÜRDÜRÜLEBİLİRLİK UYGULAMALARI ARAŞTIRMASI

The objective of this study is to identify the importance of sustainability in civil aviation management and to search the practice of sustainability at the airports in Turkey. Methodology includes both face to face interviews and application of questionnaire at the airports in Turkey. The questionnaire has been developed basing on the Transportation Research Board of the National Academies'(TRB) Airport Cooperative Research Program (ACRP) dated 2008. Also benchmarking of Turkey’s airports with other airports in the world is also accomplished with this study. Consequently, various applications and suggestions related to the sustainable airport management have been offered during the course of this research. Current practice at fifty airports in Turkey is assessed mainly in the view of sustainability criteria. The study which has been supported by the literature developed new risk management operation plans

Pre-Operative Measurement of the Morphometry and Angles of the Anterior Clinoid Process (ACP) for Aneurysm Surgery

The anterior clinoid process (ACP) is proximal to vital structures, such as the optic nerve, internal carotid artery and ophthalmic artery; therefore, study of its anatomy is important in guiding and defining surgery. We studied the anatomical structure of the ACP, including the angle formed by the apex of the ACP triangle, and its orientation, to provide information for easier and safer surgery. The measurement was performed on the axial planes of 242 cranial computerized tomography (CT) scans and 27 adult Turkish skulls of both sexes. The length of the ACP, width of the ACP at its base, the angle formed by the apical angle of the ACP triangle and the orientation of the ACP defined according to the sagittal midline were examined. In the Turkish skulls, the length and width of the ACP were similar to previous studies. Our study was the first to measure the angle and orientation of the ACP. The mean angle was 39.67 +/- 12.64 (16.6-89.5) and 135 posterior (55 %) and 107 medial (45 %) orientations. Surgical complications can be avoided by pre-operative radiological planning using axial CT scans and by determining whether the morphology is Type 2 (long, narrow, acute-angled), which requires total resection

Reshaping breakwater: Description of the profile evolution / Irregular wave induced forces on armor unit on berm breakwater

In order to develop a model able to describe how berm breakwaters reshape under the attack of waves, a large quantity of data from 2D and 3D tests was collected and arranged in a database. The data were first standardised, and since data come from models with very different size, all the lengths were scaled with the nominal diameter (Dn50) of berm stones. Since the information regarding the wave conditions in shallow water or in front of the breakwater was not always available the wave conditions were estimated in front of the breakwater by using formulae proposed by Goda (1985) and Stive, (1986). The profiles were schematised as suggested by Vellinga (1986) and van der Meer (1988) using six parameters; with the aid of PCA the original variables were transformed into uncorrelated components describing decreasing quotes of the total variance. Three of them account for 95% of the variance of our data-base. In this manner the dimensionality of the phenomenon was reduced from six to three. Each component describes part of the behaviour of the reshaping breakwater and for each of them a model was developed relating components to the environmental and structural parameters. The model respects approximately (relatively to the 1st PC) the composition principle and gives results for any condition. At the end the model was compared with the experimental profiles and with the output of BREAKWAT.Berm Breakwater

Berm breakwater structures: Final report: Research summary

A research project on berm breakwater structures was carried out with the overall objective of arriving at a better design basis. Eight European organisations from Denmark, The Netherlands, United Kingdom, Norway, Italy and Iceland participated in the joint research project co-sponsored by the European Commission under the second research and development programme on Marine Science and Technology, MAST II. Studies were made for understanding the physics of berm breakwaters, profile development, problems related to practical engineering applications and three-dimensional (3D) effects. A combination of theoretical work, physical model tests and numerical modelling was used in the project. Features of berm breakwaters are described followed by examples of prototype experience. A summary of the main results of the research project is presented, including forces on individual berm stones, numerical modelling of the flow on and in berm breakwaters and of the berm reshaping, parameter analysis, study of the influence of permeability and stone gradation, results of model tests with scour protection, and analysis of 3D model tests carried out in both deep and shallow water for studying the roundhead and trunk stability.Berm Breakwater

Progress on the MICE RF module at LBNL

The international Muon Ionization Cooling Experiment aims to demonstrate the transverse cooling of a muon beam by ionization interaction with absorbers and re-acceleration in RF cavities. The final MICE cooling channel configuration has two RF modules, each housing a 201 MHz RF cavity to compensate the longitudinal energy loss in the absorbers. The RF modules will be assembled and tested at LBNL before being shipped to and installed at RAL. This paper reports the recent progress on the manufacturing and testing of the RF module components, as well as the preparation for the final module assembly