Y. Cai, J. Clendenin, F. Decker, M. Donald, S. Ecklund, R. Erickson, A. Fisher, S. Heifets, R. Holtzapple, R. Iverson, P. Krejcik, A. Kulikov, J. Nelson, A. Novokhatski, I. Reichel, J. Seeman, M. Stanek, M. Sullivan, J. Turner, U. Wienands, C. Steier, M. Zisman, M. Biagini, W. Kozanecki
{"title":"PEP-II b工厂的现状和未来计划","authors":"Y. Cai, J. Clendenin, F. Decker, M. Donald, S. Ecklund, R. Erickson, A. Fisher, S. Heifets, R. Holtzapple, R. Iverson, P. Krejcik, A. Kulikov, J. Nelson, A. Novokhatski, I. Reichel, J. Seeman, M. Stanek, M. Sullivan, J. Turner, U. Wienands, C. Steier, M. Zisman, M. Biagini, W. Kozanecki","doi":"10.1109/PAC.2001.988178","DOIUrl":null,"url":null,"abstract":"The PEP-II e/sup +/e/sup -/ collider has been operating for two years with the BaBar detector at the energy of the Upsilon 4S resonance. The peak luminosity has reached 3.3 /spl times/ 10/sup 33//cm/sup 2//s with 693 bunches with a positron current of 1.5 A and an electron current of 0.8 A. PEP-II has delivered in excess of 38 fb/sup -1/ of data to BaBar. The beam-beam tune shift limits are approaching 0.05-0.07 horizontally and 0.03-0.05 vertically. The electron cloud instability enlarges the positron beam size at high currents but is reduced by a solenoidal field on the vacuum chambers. The beam currents in PEP-II are being raised to increase the number of bunches and the luminosity. Over the next few years the luminosity goal for PEP-II is 10/sup 34//cm/sup 2//s.","PeriodicalId":313758,"journal":{"name":"PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":"{\"title\":\"Status and future plans of the PEP-II B-factory\",\"authors\":\"Y. Cai, J. Clendenin, F. Decker, M. Donald, S. Ecklund, R. Erickson, A. Fisher, S. Heifets, R. Holtzapple, R. Iverson, P. Krejcik, A. Kulikov, J. Nelson, A. Novokhatski, I. Reichel, J. Seeman, M. Stanek, M. Sullivan, J. Turner, U. Wienands, C. Steier, M. Zisman, M. Biagini, W. Kozanecki\",\"doi\":\"10.1109/PAC.2001.988178\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The PEP-II e/sup +/e/sup -/ collider has been operating for two years with the BaBar detector at the energy of the Upsilon 4S resonance. The peak luminosity has reached 3.3 /spl times/ 10/sup 33//cm/sup 2//s with 693 bunches with a positron current of 1.5 A and an electron current of 0.8 A. PEP-II has delivered in excess of 38 fb/sup -1/ of data to BaBar. The beam-beam tune shift limits are approaching 0.05-0.07 horizontally and 0.03-0.05 vertically. The electron cloud instability enlarges the positron beam size at high currents but is reduced by a solenoidal field on the vacuum chambers. The beam currents in PEP-II are being raised to increase the number of bunches and the luminosity. Over the next few years the luminosity goal for PEP-II is 10/sup 34//cm/sup 2//s.\",\"PeriodicalId\":313758,\"journal\":{\"name\":\"PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)\",\"volume\":\"22 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2001-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"8\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/PAC.2001.988178\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PAC.2001.988178","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The PEP-II e/sup +/e/sup -/ collider has been operating for two years with the BaBar detector at the energy of the Upsilon 4S resonance. The peak luminosity has reached 3.3 /spl times/ 10/sup 33//cm/sup 2//s with 693 bunches with a positron current of 1.5 A and an electron current of 0.8 A. PEP-II has delivered in excess of 38 fb/sup -1/ of data to BaBar. The beam-beam tune shift limits are approaching 0.05-0.07 horizontally and 0.03-0.05 vertically. The electron cloud instability enlarges the positron beam size at high currents but is reduced by a solenoidal field on the vacuum chambers. The beam currents in PEP-II are being raised to increase the number of bunches and the luminosity. Over the next few years the luminosity goal for PEP-II is 10/sup 34//cm/sup 2//s.
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