Description: In this paper we describe the transport line between the main ring (MR) and the energy doubler (ED). The transport line is designed on the basis of the following three assumptions: (1) The ED is located at the apex of the same tunnel which encloses the MR. The relative locations of the two rings are shown in Fig. 1. The ED line is 3 feet to the inside and 4 feet above with respect to the MR line. Watching Fig. 1 the beam moves toward the page and the center of the rings is to the right. The continuous outer curve is the cross section of the tunnel in a typical long-straight section, the dashed inner curve is the cross section of the tunnel in the bent section. (2) The beam has to be extracted from one long-straight section of the MR (BO) and injected in the next medium-straight section of the ED (B17). The two rings are assumed to have the same identical lattice structure. (3) To keep the aisle-way in the tunnel as clear as we can it is advisable to extract the beam horizontally but displaced first vertically upward and second horizontally inward. The beam is then injected vertically. To avoid problems associated with trapped flux at low fields, it is advisable to inject at an energy substantially higher than 100 GeV. On the other hand, the last two assumptions limit the maximum energy to about 200 GeV. For higher energy one has, at the same time, to transfer the beam from one long-straight section to the next long-straight section and to obstruct a good fraction of the tunnel with Ragnets. Thus, the transport line we are going to describe here, has been designed for the transfer energy of 200 GeV. The transport line is divided in ...
Date: July 1, 1974
Creator: Ruggiero, A.G.
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