Department Publications 1996

This publication is a list of staff papers, extension publications, Economic Development Center bulletins, Center for International Food and Agricultural Policy papers, The Retail Food Industry Center working papers, journal articles, books, chapters, monographs, speeches, and theses published by the University of Minnesota, Department of Applied Economics in 1996.

Department Publications 2010

This publication is a list of books, chapters, journal articles, staff papers, The Food Industry Center publications, International Science & Technology Practice & Policy Center papers, miscellaneous monographs, Center for Farm Financial Management papers, miscellaneous Extension publications, popular press articles, op-ed articles, speeches and unpublished papers, computer software, web pages, abstracts and book reviews and theses authored by members of the University of Minnesota Department of Applied Economics in 2009.Teaching/Communication/Extension/Profession,

Department Publications 2007

This publication is a list of staff papers, extension publications, Center for International Food and Agricultural Policy papers, The Food Industry Center working papers, Economic Development Center papers, Center for Farm Financial Management papers, Minnesota Council on Economic Education publications, International Science & Technology Practice and Policy publications, journal articles, books, chapters, monographs, speeches, web pages, computer software and theses authored by members of the University of Minnesota Department of Applied Economics in 2007.Teaching/Communication/Extension/Profession,

AgEcon Search: An International Disciplinary Repository

4th International Conference on Open RepositoriesThis presentation was part of the session : Conference PresentationsDate: 2009-06-04 08:30 AM – 10:00 AMAgEcon Search, http://ageconsearch.umn.edu, is a discipline-oriented repository, started in 1995, which includes working papers, conference papers and journal articles in the field of applied economics. Running on DSpace, it is housed at the University of Minnesota and coordinated by two librarians. Involvement of professional associations has been critical in its success, and other contributors include academic departments, government agencies and NGOs. Over 32,000 documents are included, from 170 groups in 35 countries.Farm Foundation; Agricultural and Applied Economics Association Foundation; USDA Economic Research Servic

AgEcon Search: Partners Build a Web Resource

Originally published in Issues in Science and Technology Librarianship, Spring 2002Teaching/Communication/Extension/Profession,

Department Publications 2009

This publication is a list of books, chapters, journal articles, staff papers, The Food Industry Center publications, International Science & Technology Practice & Policy Center papers, miscellaneous monographs, Center for Farm Financial Management papers, Minnesota Council on Economic Education publications, miscellaneous Extension publications, popular press articles, op-ed articles, speeches and unpublished papers, computer software, web pages, abstracts and book reviews and theses authored by members of the University of Minnesota Department of Applied Economics in 2009.Teaching/Communication/Extension/Profession,

CORE MONOGRAPHS IN AGRICULTURAL ECONOMICS: SURVEY REPORT

Teaching/Communication/Extension/Profession,

Beam Scraping in the SPS for LHC Injection: Efficiency and Robustness Studies

The Large Hadron Collider (LHC) at CERN will be the world's most powerful accelerator when it is commissioned in fall 2008. Operation of the LHC will require injection of very high intensity beams. Fast transverse beam scrapers have been installed in the Super Proton Synchrotron (SPS) injector to detect and, if necessary, remove transverse beam tails. This will help to both diagnose and prevent beam quenches in the LHC. Scraping of a high intensity beam at top energy can potentially damage the scraper jaws. This has been studied with Monte Carlo simulations to find energy deposition and limits for hardware damage. Loss maps from scraping have been generated both with machine studies and tracking simulations. Time dependent Beam Loss Monitor (BLM) measurements have shown several interesting details about the beam. An analytical model of time dependent losses is compared with beam measurements and demonstrates that beam scraping can be used to estimate the beam size. Energy deposition simulations also give the time dependence of scraping, and are compatible with measurements in this respect. Several machine studies have been conducted to investigate transverse beam tails and possible uses of the beam scrapers. These have shown that the beam scrapers in combination with BLMs are very sensitive detectors of transverse beam tails. Measurements with coasting beam have shown that tails repopulate after some time. The most recent resul ts from machine studies are discussed, in light of possible sources of tail repopulation

BEAM SCRAPING FOR LHC INJECTION: HIGH LEVEL APPLICATION DEVELOPMENT

The Large Hadron Collider (LHC) at CERN (European Organization for Nuclear Research) will be the world's most powerful accelerator when it is commissioned during 2008. To operate the LHC, injection of very high intensity beams from the Super Proton Synchrotron (SPS) pre-accelerator is required. With intensities of more than 3 _ 1013 p=cycle, it is essential that there is virtually no beam halo present. Such particles can hit the LHC beam pipe, and may cause magnet quenches due to heating. Fast scrapers have been installed in the SPS to measure and remove any halo before the beam is extracted towards the LHC. Fast scrapers have been chosen because there is too little time available for beam cleaning with large collimators. The scraper hardware has been in place in the SPS ring for several years. A low level computer for controlling the scrapers is also in place. A high level control application was, however, not written at the time. The development of the missing high level control application is the subject of this work. The functional requirements for the application have been established in a report by G. Arduini and H. Burkhardt [2]. The application had to be written in Java to be compatible with the control system in the Cern Control Centre (CCC). Java is chosen due to portability between operating systems and due to the large number of freely available libraries. A working application for high level control has been devel oped and released into the software repository for the CCC computers. The application has been tested and used for two machine studies. Other users interested in using the scrapers for machine studies and commissioning have also tested the application. These tests indicate that the application works as expected, and can be used by operators in the future. Also, they have provided valuable feedback for further improvements of the application