Technical Design Report Super Fragment Separator

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DRAFT • Precise three-dimensional reference network measurements including component positions for each individual machine (accuracy ± 0.1 mm) • Relative alignment of neighbouring magnets, beam diagnostic devices and other components that have to be positioned to tight tolerances • Precise three-dimensional measurement for quality control in order to detect failings in initial alignment or meanwhile occurred deformation Independent of the methods that will be used to align any component, it has to be clear, that every component, which requires alignment, needs to be fiducialized before installing it into the ultimate FAIR facility (like e.g. the <strong>Super</strong>-FRS). The basic principles together with important preparatory work are described in section 2.4.A3.2 The surface network, which is needed for the absolute orientation of the different machines in space and relative to each other as well as for the strengthening of the tunnel network, calls for the construction of vertical sight shafts and some concrete pillars. The number and position of shafts and pillars needed at FAIR site depend on a suitable net design. Appropriate simulation computations for the estimation of achievable accuracies are reasonable when geometry and position of the accelerators are finalized. As an example a very preliminary investigation yielded to a number of three sight shafts for the link between the surface and the SIS100-tunnel network (see Figure 2.4.141). Figure 2.4.141: Preliminary result of tunnel network simulation (as example the SIS100 was chosen). 168
DRAFT 2.4.A3.2 Work packages: description of basic principles 2.4.A3.2.1 Fiducialization Fiducialization is a term for relating the magnetic respectively mechanical axis of a component to reference marks – the fiducials – that can be seen or touched by instruments. These fiducials are used for positioning the accelerator components within the tunnel. Fiducialization is a two-step-process. Firstly the axis has to be determined; secondly the position of this axis has to be related to the external fiducials [96]. The results of any fiducialization should be 3D-coordinates x, y, z of the fiducials with respect to the magnetic axis and the field vector. This allows an explicit description of the six degrees of freedom – that is position and orientation in space – for every component. With the focus on fiducialization some differences in magnets have to be mentioned: the fiducials at warm magnets are usually located directly on the laminations. Once measured it is assumed that the fiducial marks do not change their position. The mechanical axis can easily be visualized by a mandrel as shown in Figure 2.4.142. In contrast to the normal conducting magnets the sc-magnets are mostly enclosed in a cryostat. Therefore the yoke is not directly accessible when cooled down i.e. in normal working condition. The fiducials have to be placed on the cryostat, which has in fact no stable relationship to the magnet. Figure 2.4.142: Existing Quadrupole with inserted mandrel. A very close collaboration of magnetic and geometric measurement groups is essential to fulfil the requirements on giving realistic, precise values for the relation between axis and external reference marks. Additional information is necessary in order to be able to give reliable quantities for the accurate positioning of an invisible object – the magnetic axis. Therefore the dimensional control of the magnets to ensure the production tolerances has to be carried out as well as extensive analysis of possible movements of the magnet versus cryostat under different conditions. For 169
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DRAFT Technical Design Report Super
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Preface DRAFT The International Fac
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Contents DRAFT 2.4.1 System Design
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DRAFT Table 2.4.1: Parameters of th
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DRAFT degrader stage which provides
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Pre-Separator DRAFT In order to acc
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DRAFT coupling coefficients is give
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DRAFT Table 2.4.3: First-order matr
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DRAFT Main-Separator to the high-en
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DRAFT Table 2.4.5: Transmission T o
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DRAFT Figure 2.4.15: Resolution nec
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DRAFT Figure 2.4.17: Spectrometer m
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DRAFT Table 2.4.8: Design parameter
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DRAFT Figure 2.4.20: Side view of t
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DRAFT Figure 2.4.23: Coil cross-sec
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DRAFT Figure 2.4.25: Flux density d
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Figure 2.4.29: Assembly of two half
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DRAFT Figure 2.4.31: Cross section
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Figure 2.4.34: Sketch of the therma
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DRAFT To fulfill the required field
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DRAFT Figure 2.4.39: The 3D model o
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DRAFT Pole radius mm 100 210 250 25
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DRAFT Figure 2.4.43: Front, side, a
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∆B/B 0.0 DRAFT Figure 2.4.46: Ave
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DRAFT Figure 2.4.50: 3D model of th
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DRAFT Figure 2.4.54 and Table 2.4.1
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DRAFT 2.4.2.3.1 Radiation resistant
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DRAFT The water-cooled radiator con
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DRAFT Table 2.4.17: Coil parameters
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DRAFT Figure 2.4.63: Field distribu
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DRAFT Figure 2.4.65: Multiplet conf
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DRAFT Table 2.4.21 summarizes the r
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2.4.2.6 Current Leads DRAFT The cur
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DRAFT Table 2.4.23 presents the lis
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2.4.3 Power Converters DRAFT The po
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SCR structure DRAFT Regarding high
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a) Chopper circuit 3x400V b) Half b
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External Control System Data transf
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DRAFT Figure 2.4.77: Arrangement of
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SuperFRS Power Supply Effective App
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DRAFT The locations for the differe
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DRAFT Figure 2.4.80: Beam induced f
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DRAFT Figure 2.4.82: Two hybrids ca
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DRAFT Figure 2.4.84: Left panel: TP
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DRAFT extracted beams. Its use for
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Time of Flight measurement DRAFT At
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DRAFT together. Another option is t
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DRAFT Figure 2.4.88: Pillow seal po
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DRAFT Figure 2.4.90: Setup at the m
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DRAFT An overview of the total vacu
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2.4.7.4 Appendix - Technical Drawin
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DRAFT Figure 2.4.96: Diagnostic cha
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DRAFT Figure 2.4.98: Diagnostic cha
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DRAFT Figure 2.4.100: Diagnostic ch
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2.4.8 Particles Sources n/a 2.4.9 E
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DRAFT movable, but BC3 must be able
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DRAFT Figure 2.4.106: Spot size of
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dE/dV [kJ/cm 3 ] 3 2 1 DRAFT includ
Page 117 and 118: 2.4.11.1.4 Design of the beam catch
Page 119 and 120: DRAFT Figure 2.4.110: Calculated eq
Page 121 and 122: DRAFT Figure 2.4.112: Location of b
Page 123 and 124: DRAFT the carbon. Again mainly 7 Be
Page 125 and 126: DRAFT maintenance of the carbon or
Page 127 and 128: DRAFT material) and received the an
Page 129 and 130: DRAFT commissioned in February 2005
Page 131 and 132: DRAFT Table 2.4.28: Typical beam pa
Page 133 and 134: DRAFT Figure 2.4.120: Surface tempe
Page 135 and 136: DRAFT Figure 2.4.123: Schematic lay
Page 137 and 138: DRAFT These results show that the i
Page 139 and 140: DRAFT Like in the case of the rotat
Page 141 and 142: DRAFT Figure 2.4.126: Left: Schemat
Page 145 and 146: DRAFT Figure 2.4.129: Flow scheme o
Page 147 and 148: DRAFT Since the weight of the cold
Page 149 and 150: DRAFT With the cooling capacity spe
Page 151 and 152: DRAFT Figure 2.4.134: Schematic of
Page 153 and 154: S1 (a) Figure 2.4.136: (a) Zoom of
Page 155 and 156: 2.4.A Appendix DRAFT The appendix o
Page 157 and 158: DRAFT experiment the EXL community
Page 159 and 160: 2.4.A1.3 Slow control and monitorin
Page 161 and 162: DRAFT Figure 2.4.139: Architecture
Page 163 and 164: DRAFT all FAIR accelerators will be
Page 165 and 166: DRAFT source tier are split in two
Page 167: DRAFT coupled from the ACS which is
Page 171 and 172: 2.4.A3.2.4 Instrumentation Measurin
Page 173 and 174: DRAFT this, planning a network layo
Page 175 and 176: DRAFT 2.4.A3.3 Machine characterist
Page 177 and 178: DRAFT installation of RALF was done
Page 179 and 180: DRAFT The double ring synchrotrons,
Page 181 and 182: DRAFT The first refrigerator, Cryo1
Page 183 and 184: DRAFT shield 28874 + 25 g/s 22 bar
Page 185 and 186: LHe storage Helium storage Helium s
Page 187 and 188: Cryo2 Cryo3 CryoST DB 3 DRAFT Compr
Page 189 and 190: DRAFT The cold connection will be m
Page 191 and 192: DRAFT Measurements planned for each
Page 193 and 194: DRAFT For magnets with less stringe
Page 195 and 196: DRAFT The value, parameters, condit
Page 197 and 198: DRAFT 3. Geometry tests For cryosta
Page 199 and 200: DRAFT The Quench Heaters Tests has
Page 201 and 202: DRAFT Figure 2.4.159: Photograph of
Page 203 and 204: DRAFT The field properties listed i
Page 205 and 206: DRAFT Figure 2.4.161: Schematic vie
Page 207 and 208: DRAFT Figure 2.4.162: Scheme of the
Page 209 and 210: 2.4.A6.2.2 Shielding against direct
Page 213 and 214: DRAFT Figure 2.4.165: An iron beam
Page 215 and 216: DRAFT In a side view the flux of pr
Page 217 and 218: DRAFT catcher 7 Be, 22 Na and 24 Na
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DRAFT at the FRS (2·10 9 /spill as
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DRAFT [1] H. Geissel et al., Nucl.
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DRAFT [74] A. Fabich and J. Lettry,
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