Figure 2 - uploaded by Michael K Sullivan
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Plot of the (y,y’) phase space after collision in the earlier design. Each color refers to one longitudinal bunch slice.
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A Super Flavor Factory, an asymmetric energy e+e- collider with a luminosity of order 10^36 cm-2s-1, can provide a sensitive probe of new physics in the flavor sector of the Standard Model. The success of the PEP-II and KEKB asymmetric colliders in producing unprecedented luminosity above 10^34 cm-2s-1 has taught us about the accelerator physics of...
Context in source publication
Context 1
... be about 10000 bunches. Thus, the collision rate is about 1.2 MHz. A small electron linac and a positron source are used to replenish lost positrons in the colliding process and natural beam lifetime. See Figure 1. This scheme was necessary in order to save power for cooling the beams that are heavily disrupted after the collision. As shown in Fig. 2, the vertical emit- tance growth in a single collision is about 300. Run- ning the rings at low energy is the only mean to bring the power requirements for the facility to the 100MW levels. The scheme studied in [5] presents several complex- ities and challenging requirements for several subsys- tems. In particular the low energy ...
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A Super Flavor Factory, an asymmetric energy e+e- collider with a luminosity of order 10 36 cm -2 s -1 , can provide a sensitive probe of new physics in the flavor sector of the Standard Model. The success of the PEP-II and KEKB asymmetric colliders (1,2) in producing unprecedented luminosity above 1034 cm-2s-1 has taught us about the accelerator p...
Citations
Super $B$ is an asymmetric energy ${\rm e}^{+}{\rm e}^{-}$ collider operating at the $\Upsilon$(4S) peak $(\sqrt{\rm s}\sim 10.58\ {\rm GeV})$ to be built in Italy, with a design peak luminosity of $10^{36}\ {\rm Hz/cm}^{2}$. In order to get the required high luminosity, a novel collision scheme, the so called “large Piwinski angle and crab waist”, has been designed. This scheme requires that two doublets of high gradient superconducting quadrupoles (denominated in the Super $B$ naming scheme as QD0 and QF1) are placed as close as possible to the interaction point. This layout is critical because the space allowed to the doublets is very small. An advanced design of the quadrupole has been developed, based on the so-called helical coil concept. The paper discusses the design and construction concept of a model of the superconducting quadrupole based on NbTi technology.
The main physics goals of a high luminosity e+e- flavor factory are discussed, including the possibilities to perform detailed studies of the CKM mechanism of quark mixing, and constrain virtual Higgs and non-standard model particle contributions to the dynamics of rare B_u,d,s decays. The large samples of $D$ mesons and tau leptons produced at a flavor factory will result in improved sensitivities on D mixing and lepton flavor violation searches, respectively. One can also test fundamental concepts such as lepton universality to much greater precision than existing constraints and improve the precision on tests of CPT from B meson decays. Recent developments in accelerator physics have demonstrated the feasibility to build an accelerator that can achieve luminosities of O(10^36) cm^-2 s^-1.
