![]() At a background gas pressure of 10 nTorr, beam lifetimes of only a few hours are expected. We find that more » the single-bunch instabilities should not lead to difficulty, and that the emittance growth is essentially negligible. In addition, we examine the possibility of emittance growth from intrabeam scattering and calculate the beam lifetime from both Touschek and gas scattering. Both single-bunch and coupled-bunch instabilities are described and their effects are estimated based upon an example machine design (APIARY-IV). In this paper we consider the influence of collective effects on the machine performance most of our findings are generic,'' in the sense that they depend rather weakly on the details of the machine design. The design of a high-luminosity electron-position collider to study B physics is a challenging task from many points of view. Nonetheless, it does not appear that there are any fundamental problems that stand in the way of successfully designing and building such a high-luminosity B-Factory. Even then, a powerful feedback system will likely be required. There appear to be significant benefits to a radically different rf system design, either utilizing superconducting single-cell rf cavities, or cavities with equivalent geometrical shapes but operated at room temperature. ![]() With a standard PEP-like multicell rf system, multibunch growth rates are very severe, especially in the longitudinal plane. Even this lifetime is likely to require an innovative design for the vacuum system to maintain a pressure of 10 nTorr in the presence of a circulating electron or positron beam of approximately 1 A. ![]() ![]() At a background gas pressure of 10 nTorr, beam lifetimes of only a few hours are expected, which will place a burden on the injection system if a high average luminosity is to be maintained. We find that the single-bunch instabilities should not lead to difficulty, and that the emittance growth is essentially negligible. Based upon an example machine design (APIARY-II), we investigate single-bunch thresholds for the longitudinal microwave and transverse mode-coupling instabilities, examine the possibility of emittance growth from intrabeam scattering, calculate the beam lifetime from Touschek scattering and gas scattering, and estimate the growth rates for both longitudinal more » and transverse coupled-bunch instabilities. The design of a high-luminosity electron-positron collider to study B-physics is a challenging task from many points of view. Other than that, those using iOS devices can further strengthen their security by enabling Touch ID.= , To protect your plans and concepts, the application gives you the option to lock your maps with a passcode known only to you. Ideas are precious and that is something the creators of Mindly understand. With this, they become more efficient while they let their creativity flow. That is why Mindly enables paying subscribers to search for a term or concept so they can immediately edit it. When your mind map grows, it becomes more laborious to navigate. Mindly helps you with that as it lets you write down thoughts related to a single concept and connect them in different ways. ![]() Because of that, you can focus your mind more when you work.Īs you conceive of different things, you feel the need to organize them to make sense out of them and to connect different ideas. It does so by showing only the topics or subtopics relevant to you at the current time. Rather than adding elements to your workspace haphazardly, Mindly aids you in focusing on your present tasks. Mindly provides you with that, as the application lets you link and unite different pieces of information to create a comprehensible mind map. When you think of a word and immediately find another to associate with it, you need something to connect the two related terms together. ![]()
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