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  • Neutrino Factories
    No. 29 (2002)

    Editors-in-Chief: W. Chou and J.M. Jowett, Editors: C. Biscari, S. Chattopadhyay, S. Ivanov, A.M. Lombardi, H. Mais, J. Wei, and C. Zhang

    This issue of the ICFA Beam Dynamics Newsletter has been edited by a new member of the editorial team, Dr Alessandra Lombardi, who joined the Beam Dynamics Panel earlier this year. She has chosen the special theme of Neutrino Factories, one of the brightest hopes for extending the reach of particle accelerators into regions of unexplored physics beyond those that will be opened up by the LHC and, we hope, a linear collider.

    The general scheme of a neutrino factory is the following: a high power proton beam (of few MW) is sent on a (mercury) target; the forward going pions are collected and decay into muons. The pions/muons energy distribution is peaked around 200 MeV almost independently of the primary beam energy. Muons are further manipulated (phase rotation and ionization cooling) before being accelerated to energies of several tens of GeV and stored in a ring where they decay into neutrinos. The possibility of selecting at the source positive or negative muons allows for a beam containing only one flavour neutrino at the time; a condition which is necessary for observing CP violation. Each stage of the neutrino factory (high power proton beam generation, pion production and collection, muon manipulation and acceleration) is technologically challenging and must be optimized very carefully in order to overcome the low proton-to-pion conversion (of the order of 1%). Studies and experimental activities are going on in Japan, Europe and in the Unite States. Neutrino factories activities bring together accelerator and particle physicists, as the interplay between these two disciplines is very strong at almost every stage of the machine. This synergy is reflected in the collection of articles in this newsletter. After an introduction on the physics motivation, a description of the KEK activities and a report on FFAG acceleration comes a collection of articles describing ionization cooling from three points of view (beam dynamics, experimental and analytical). The section is closed by a description of the experiment HARP which will provide an important input to the neutrino factory design by measuring, amongst others, the spectrum of the pions produced by a proton beam of varying energy on different target material.

    The activity section contains the important results at the TWAC facility at ITEP where some 1010 C6+ ions have been successfully accumulated and several reports from workshop and conferences. The final section recalls the upcoming ICFA beam dynamics workshops (the 28th, 29th and 30th and the 12th mini-workshop ) and other workshops related to cooling (COOL03) and neutrinos (Nufact03). Finally in appendix there are two tables : the first listing the simulation codes used for slow extraction design and analysis and the second with the status of instrumentation for existing and planned machines around the world. They were compiled at the 10th and 11th ICFA mini workshop, respectively.

  • LNF-02/022 (P): New European SR facilities
    No. 28 (2002)

    Editors-in-Chief: W. Chou and J.M. Jowett, Editors: C. Biscari, S. Chattopadhyay, S. Ivanov, H. Mais, J. Wei, and C. Zhang

    This issue of the ICFA Beam Dynamics Newsletter dedicates a section to the description of the French and Spanish projects.

    SOLEIL with its beamlines producing VUV and soft X-rays will be complemetary to ESRF.

    LLS is the first accelerator facility to be built in Spain: it is a first priority project for the Spanish science. It will be housed at Barcelona, and will produce high brightness soft X-rays in the region 0.05–2 keV and high intensities X- rays in the region 4–30 keV.

    An interesting article has been written by Prof. Khan on the necessity of creating an International Asian Facility. He appeals the Asian scientists and institutions to collaborate in the construction of an Asian Accelerator Laboratory (AAL), which could promote exchange of progress and technologies among all the Asian countries.

    Several activity reports have been included in this issues:

    • An important step at the CLIC test facilities, demonstrating the feasibility of the recombination principle for the frequency multiplication system.

    • The description of the NewSUBARU storage ring, operated in the positive momentum compaction mode.

    • The studies on the radiation wigglers to be installed at CESR for the luminosity runs at lower energies.

    • The analytical description of many beam dynamics aspects by Gao at LAL. Two exhaustive descriptions on the 26th and 27th ICFA Advanced Accelerator and Beam Dynamics Workshops have been written: the first one by M. Ferrario, assisting the workshop on "The Physics and Applications of High Brightness Electron Beams", held in Sardinia at June and the second by R. Assmann and F. Zimmermann, organizers of the workshop ‘Nanometre-Size Colliding Beams’, held at Lausanne at beginning of September.

  • Real Time Radiation Simulator and Analogies between Light Optics and Charged Particle Optics
    No. 27 (2002)

    Editors-in-Chief: W. Chou and J.M. Jowett, Editors: C. Biscari, S. Chattopadhyay, S. Ivanov, H. Mais, J. Wei, and C. Zhang

    This issue of the ICFA Beam Dynamics Newsletter includes a number of summary reports from the ICFA-HB2002 Workshop, held at Fermilab, USA, April 8–12, 2002. In addition to a general workshop report, this newsletter also includes reports from three working groups and several parallel sessions. Although the workshop proceedings are to be published, it will take 6 months or longer for them to appear. Furthermore, only the 150 participants at the workshop will receive a copy of the printed proceedings. In contrast, the Newsletter provides a convenient vehicle for rapid communications to the accelerator community on important subjects, such as that of the HB2002. It is the editor's opinion that we should explore this unique feature of the Newsletter in future issues so that reports from important workshops can be disseminated in a timely manner.

    This issue also includes the reports from several other important workshops: the 24th ICFA Advanced Beam Dynamics Workshop (ABDW) on Future Light Sources, the Mini-Workshop on Coherent Synchrotron Radiation, and the Ecloud 2002 Mini-Workshop. Mini-workshops appear to be gaining in popularity. This is because they are easy to organize, have a small number of experts meeting together, and are well focused on specific problems. They have been proved to be efficient and productive. We look forward to receiving more mini-workshop reports for publication in this Newsletter.

    There are two activity reports in this issue: one on a real time radiation simulator, another on the analogies between light optics and charge particle optics. We hope readers find them interesting. There are a number of announcements of upcoming workshops. The minutes of a recent ICFA Beam Dynamics Panel Meeting are also included.

  • Recirculated Linac Light Sources
    No. 26 (2001)

    Editors-in-chief: K. Hirata and J.M. Jowett, Editors: S. Chattopadhyay, W. Chou, S. Ivanov, H. Mais, J. Wei, and C. Zhang

    It is my special privilege to present to you the current ICFA Beam Dynamics Newsletter upon invitation from John Jowett of CERN. This issue focuses on the special topic of Recirculated Energy Recovered Linacs as being investigated at various laboratories such as Cornell, Berkeley, Jefferson Lab, Brookhaven, etc. In addition, a few other laboratories have contributed on general synchrotron radiation and other topics. I must give a special note of thanks to Dr. Geoffrey Krafft and Dr. Yuhong Zhang of Jefferson Lab who have, working in concert with me, jointly solicited, collected and put together this outstanding issue for your benefit. As we continue the newsletter in the future, it is my sincere hope that we can continue this tradition of presenting topical material in such depth as this one. This issue is going to press as the calendar year 2001 draws to a close and so I must wish you all pleasant holidays, season's greetings and a very happy new year.

    S. Chattopadhyay

  • Beam dynamics at various laboratories
    No. 25 (2001)

    Editors-in-Chief: K. Hirata and J.M. Jowett, Editors: W. Chou, S. Ivanov, H. Mais, J. Wei, D.H. Whittum, and C. Zhang

    The Chairman reviewed the organization of the Beam Dynamics Newsletter. This is available online, but 1300 paper copies are still distributed.


    There are three issues per year with rotating editors (Chattopadhyay, Chou, Ivanov, Mais, Wei,  Zhang) guided by the chief editors (Hirata, Jowett). The editors may choose to give individual newsletters a special theme.

    All Panel members contribute regularly and encourage contributions from colleagues and contacts.  Articles are welcomed from everyone in the beam dynamics community. The types of article can include: letters, opinions, workshop and conference reports, activity reports, announcements of forthcoming beam dynamics events, announcements of Ph.D. theses in beam dynamics. Articles in the newsletter are NOT scientific papers.

  • Beam dynamics at various laboratories
    No. 24 (2001)

    Editors-in-Chief: K. Hirata, J. M. Jowett, Editors: S. Chattopadhyay, W. Chou, S. Ivanov, H. Mais, J. Wei, and C. Zhang

    In this edition the activity reports of the high energy laboratories DESY and CERN describe upgrade programs for existing machines and future developments. The beam dynamics activities for synchrotron light sources and FEL’s are described by M. Böge, A. Streun, E. Karantzoulis and G. Dattoli et al. Furthermore, and this is a great pleasure for me, we have activity reports from university groups in Bologna, Rostock, and Albuquerque covering a wide range of problems from space charge, nonlinear collective phenomena, spin dynamics to computational aspects of beam dynamics in accelerators. One category of articles supported by the Beam Dynamics Newsletter is Review of Beam Dynamics Problems. M. Conte and his colleagues present a review of the Stern-Gerlach force, an interesting but also controversially discussed topic.

  • Beam dynamics at various laboratories
    No. 23 (2000)

    Editors-in-Chief: K. Hirata and J.M. Jowett, Editors: W. Chou, S. Ivanov, H. Mais, J. Wei, D.H. Whittum, and C. Zhang

    During our editorial work on the issue John Jowett of CERN has noticed an instructive and comprehensive preprint FERMILAB–TM–2130 by Roy Rubinstein, the ICFA Secretary, entitled “What, Why, and Who, is ICFA?”. This paper exposes the ICFA organization, purposes and a place of our Beam Dynamics Panel in its hierarchy. The paper is of interest to everybody involved in beam physics.

  • Beam dynamics at various laboratories
    No. 22 (2000)

    Editors-in-chief: K. Hirata and J.M. Jowett, Editors: W. Chou, S. Ivanov, H. Mais, J. Wei, D.H. Whittum, and C. Zhang

    Dr. K.Hirata, Chairman of ICFA Beam Dynamics Panel, suggested to organize a special chapter of “Accelerators in China” in the Newsletter No. 22 when he asked if I would be the active editor for this issue. Had realized my dereliction of duty for too few articles attracted from Chinese institutions in the previous issues though, I felt that the better idea was to create a special chapter of “Accelerators in Asia” in this issue, especially when the 5th Plenary Asian Committee for Future Accelerators (ACFA) would be held soon. The information on the Newsletter No. 22 was announced during the ACFA meeting held in May 29 to 31 at Korea.

    As a result, we received 12 contributions from Asia area, they are: Zuping Liu and Weimin Li, Beam Physics Activities at NSRL; C.C. Kuo, Beam Dynamics Activities at SRRC; Yuzheng Lin, Beam Dynamics Activities in the Accelerator Lab of Tsinghua University; Nan Huang et al, Beam Dynamics Activities in SSRF; Jiuqing Wang, Beam Dynamics Studies in BEPC; J. W.White, A Synchrotron for Australia? (Australia is a member of ACFA); Yoshihiro Funakoshi, Present Status of the KEKB; Jinyu Tang et al, Beam Dynamics Activity in HIRFL; Eunsan Kim, Beam Instability Studies in PLS Storage Ring; Yumin Jin, Second OCPA Accelerator School and Chuang Zhang, APAC met in Korea. It is their contributions which make the Asian chapter true in this issue.

  • Next-Generation High-Intensity Applications
    No. 21 (2000)

    Editors-in-Chief: K. Hirata and J.M. Jowett, Editors: W. Chou, S. Ivanov, H. Mais, J. Wei, D.H. Whittum, and C. Zhang

    This newsletter is the first to be prepared by Jie Wei, one of the recently appointed editors. Besides the usual variety of material, Jie has chosen to give it a special and very timely focus on “Next-Generation High-Intensity Applications”.

    Regular readers may have been disappointed by the fact that no issue appeared in December 1999. This meant that some announcements that would have been included in that issue are now out of date. We hope that the affected authors and our readers will accept our apologies for this. Still, we ask everyone to remember that the editors of each issue donate their spare time on an entirely voluntary basis as a service to the beam dynamics community and that they have few resources to help them in the task.

  • High Intensity High Brightness Hadron Beams
    No. 20 (1999)

    Editors-in-Chief: K. Hirata and J.M. Jowett, Editors: W. Chou, S. Ivanov, H. Mais, J. Wei, D.H. Whittum, and C. Zhang

    This issue of the Newsletter is the first to be prepared under a new editorial scheme. Readers will have noticed that the list of editors on our cover page is much longer than it used to be. In the old scheme each of the three editors was principally responsible for one issue per year. The larger team will now take it in turn to be principal editors of an issue. The idea behind this is not merely to distribute the (entirely voluntary) workload over more members of the ICFA Beam Dynamics Panel. Rather, we hope that it will imbue the Newsletter with their individual ideas and approaches and provide more varied reading. The grandly titled “Editors-in-Chief” will coordinate and maintain continuity.

    The present Newsletter gives every indication that this arrangement will produce the goods. Weiren Chou, the principal editor of this issue, has produced a Newsletter with a large section de- voted to the theme of high-intensity, high-brightness hadron beams. As one of the most active researchers in this field, he is in an excellent position to compile a comprehensive survey of activities from contacts world-wide. The regular Newsletter features continue to be present and, of course, your contributions—activity reports, letters to the editors, announcements of beam dynamics events and so on—are welcome for future issues. We hope that all members of the beam dynamics community will feel they can contact their nearest Panel Member and propose a contribution.

  • Beam dynamics at various laboratories
    No. 19 (1999)

    Editors-in-Chief: K. Hirata and J.M. Jowett, Editors: W. Chou, S. Ivanov, H. Mais, J. Wei, D.H. Whittum, and C. Zhang

    The newsletter has been growing steadily and is now supported strongly by the beam dynamics and accelerator physics society. I want to thank all the contributors to the newsletter and people who had helped it including past and present editors and beam dynamics panel members and also want to ask continuous support of the newsletter. As you can realize on the front cover page, the editorial system has changed a little from this issue. J.M. Jowett and I will work as chief editors who supervise the editorial processes. The six editors will edit each issue alternatively. The August issue will be edited by W. Chou.

  • Beam dynamics at various laboratories
    No. 18 (1998)

    Editors: K. Hirata, J.M. Jowett and S.Y. Lee

    Once again, we have a newsletter packed with interesting and timely articles. It is very encouraging to see that the section devoted to announcements of recent doctoral theses contains no less than 5 items. I think we can fairly claim that this section has really caught on as a means for new entrants to the field to make their work known.

    Another very welcome and valuable type of article is that calling attention to new, urgent or promising topics of research. In this issue Dimitri Petrikov introduces us to new phenomena arising from the combination of space-charge and beam-beam effects in electron-nucleon colliders. Of course, the newsletter is not a medium for publication of scientific results–that is the proper role of journals and conferences–but we hope that articles like this may help to catalyse new contacts and developments leading to future research publications.

  • Beam dynamics at various laboratories
    No. 17 (1998)

    Editors: K. Hirata, J.M. Jowett and S.Y. Lee

  • Beam dynamics at various laboratories
    No. 16 (1998)

    Editors: K. Hirata, J.M. Jowett and S.Y. Lee

  • Beam dynamics at various laboratories
    No. 15 (1997)

    Editors: K. Hirata, J.M. Jowett and S.Y. Lee

  • Beam dynamics at various laboratories
    No. 14 (1997)

    Editors: K. Hirata, J.M. Jowett, S.Y.Lee

  • Reviews of Beam Dynamics Problems
    No. 13 (1997)

    Editors: K. Hirata, J.M. Jowett and S.Y. Lee

    In this issue, W. Schnell provides a review of the current status of the Linear Collider design, G. Guignard and J. Hagel draw our attention to a visual simulation program for the Linear Collider beam dynamics, and J. Urakawa reports the status of ATF damping ring. Many interesting beam physics experiments will be carried out at the ATF ring in coming years. Toward the goal of a possible Tau-Charm factory, L. Teng provides an activity report, based on the Beijing Tau-Charm factory design, for the Tau-Charm working group. S. Krishnagopal provides a first light of the INDUS1 commissioning. S. Peggs reports a successful commissioning of a RHIC Sextant. U. Bechstedt et al. reports the status of the COSY at Jülich. Reports from CERN are always refreshing and informative. In general, Laboratory activity and workshop reports provide useful information to our community.

  • Beam dynamics at various laboratories
    No. 12 (1996)

    Editors: K. Hirata, J.M. Jowett, S.Y.Lee

    In the last issue, we discussed our wish to construct a world-wide community of physicists working in beam dynamics. As stated appropriately in the last newsletter "we just need the community spirit" The publication of this newsletter is a part of the effort to achieve it. We, the editors, want to offer a free, informal and useful forum to enhance the mutual interaction among all accelerator physicists.

    A society seems to be a nonlinear complex system. If the interaction between elements is below a threshold, it is frozen and shows only periodic local motions (possibly bound to a project). Above the threshold, self-organization will set in and elements will interact much more strongly and coherently. By "community", we like to imagine such a state. In this issue, we have some reports on regional beam dynamics communities. The appearance of such spontaneous local organizations implies that the whole state is just slightly below the threshold. A little more interaction may lead to a global phase transition.

    Although the number of submissions is increasing, we continue to invite more people to contribute to our newsletters. It is really easy to submit something (just send an e-mail) as long as you have something that you think is of interest to other people. You can express your opinion on physics, physicists, society, etc., in the Letters to the Editor. Your opinion on the activities of the Beam Dynamics Panel is most welcome. Some criticism of the articles in our newsletter and in other journals might be useful, too.

    You can also use the newsletter to attract people to an interesting subject (of yours) in physics. In fact, in this issue, we have a contribution, almost a short paper, which may attract people to study the dynamic aperture. (I'm afraid that my student might quit "beam-beam" and turn to "dynamic aperture" after reading it.) We also have two articles in Review of Beam Dynamics Problems which might seduce people into new fields of beam dynamics. The main aim of the Activity Reports is not to proudly announce achievements in laboratories but is to show difficulties and unsolved problems to the world-wide community to get useful and helpful information and to offer interesting problems for them to solve.

    We hope that all the articles in our Newsletters are by no means "formal". They should be treated as letters from friends to friends in the same community.

  • Beam dynamics at various laboratories
    No. 11 (1996)

    Editors: Kohji Hirata, J.M. Jowett, S.Y. Lee

    This issue of our newsletter again reflects the continuity, diversity and vitality essential to the health of the field of beam dynamics.

    We make a constant effort to better represent the activities of smaller laboratories. While we get a few such contributions, it would be in the interests of better communication and increased awareness to see more of them.

  • Workshop and activity reports
    No. 10 (1996)

    Editors-in-Chief: K. Hirata, Editor: S.Y. Lee

  • Workshop and activity reports
    No. 9 (1995)

    Editor: K. Hirata

  • Workshop and activity reports
    No. 8 (1995)

    Editor: K. Hirata

  • Workshop and activity reports
    No. 7 (1995)

    Editor: K. Hirata

  • Workshop and activity reports
    No. 6 (1995)

    Editors: K. Hirata, S.Y. Lee and F. Willeke

  • CERN SL/90-118 (AP): Beam dynamics at various laboratories
    No. 5 (1990)

    Editors: E. Keil and A. Piwinski

    This volume of the ICFA Beam Dynamics Newsletter contains the written versions of the presentations of ongoing and planned beam dynamics activities in the home laboratories which were made by the participants at the Fourth Advanced ICFA Beam Dynamics Workshop on Collective Effects in Short Bunches, held from 24 to 29 September 1990 at KEK, Tsukuba, Japan.

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