Technical Design Report Super Fragment Separator

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DRAFT Table 2.4.11: Mechanical properties of stainless steel 316LN. Temperature Tensile strength Yield strength Elongation σb (MPa) σ0.2(MPa) δ5 (%) 300 K ≥650 ≥350 ≥35 4 K ≥1500 ≥1000 ≥35 To reduce the heat flux to the helium system, the outer surface of the casing will be wrapped with a multi-layer insulation. Figure 2.4.33 shows the cross section and the top view of the coil casing. I 10 11 I 12 Figure 2.4.33: Cross-section (left panel) and top view (right panel) of the coil casing. The thermal shield has to have a good thermal conductivity, a good rigidity to weight ratio, and has to be easy to fabricate and to assemble. The main part of the thermal shield consists of seven pieces: inner shield in two pieces, outer shield in two pieces, upper shield, bottom shield and a piece for the current leads box. All pieces are made of copper plates with 2 mm thickness. The forced-flow cryogen for cooling the thermal shield is liquid nitrogen (LN) or cold helium gas to intercept thermal radiation from the cryostat. The cooling pipes are made of 1 mm thick copper having a rectangular shape with an outer dimension of (20 × 8) mm 2 . To reduce the heat flux to the helium system, the outer surface of the thermal shield will be wrapped with an insulation of ten layers. Figure 2.4.34 shows a sketch of the thermal shield. 36
Figure 2.4.34: Sketch of the thermal shield. G' G' DRAFT The cryostat has a trapezoidal shape (see Figure 2.4.35, left panel). It provides all connections between the coil casing and the outside parts including cryogenic supply and current leads. The cryostat is a welded structure made from 316L or 304L stainless steel. It is equipped with two ports allowing the control and adjust the coil position during assembly. In additions there are holes on the thermal shield to control the coil casing. The total weight of the cryostat including the coils is about 1730 kg. The interior volume of the cryostat for pumping is 256 litres. D) Support and current lead box Long rods support the thermal shield and the coil casing. They are based on the cryostat and are able to adjust the position of the coils if necessary (also at operating temperature). The rods are made of G10. The heat load to the 80 K thermal shield is about 0.3 W for each support, and to the 4.2 K LHe about 0.1 W. Figure 2.4.35 (right panel) shows the structure of the support part. A bellow is integrated in the support to compensate the length change during coil cool down. The weight to be supported are the self weight of the coil and the mass of the thermal shielding. The coil is suspended by twelve supports connected to the cryostat. These are placed at the outer arc section of the yoke and at the middle of the straight line to compress the coil against distortion under electromagnetic forces. A current lead box will provide the interface to the local cryogenic line and the connection to the power line. When the magnet is powered, the low temperature heat-load for the LHe is about 0.4 W including the joule heat produced by the resistance of the lower joint. The liquid helium consumption of one current lead is about 1.7×10 -2 g/s. When no current passes through the current lead, the low temperature heat-load for the LHe is about 30-40 % of the above value, thus about 0.11-0.15 W, and the LHe consumption of one current lead is about 5×10 -3 g/s to 6.7×10 -3 g/s. E E C C G G 37
Page 1 and 2: DRAFT Technical Design Report Super
Page 3 and 4: Preface DRAFT The International Fac
Page 5 and 6: Contents DRAFT 2.4.1 System Design
Page 7 and 8: DRAFT Table 2.4.1: Parameters of th
Page 9 and 10: DRAFT degrader stage which provides
Page 11 and 12: Pre-Separator DRAFT In order to acc
Page 13 and 14: DRAFT coupling coefficients is give
Page 15 and 16: DRAFT Table 2.4.3: First-order matr
Page 17 and 18: DRAFT Main-Separator to the high-en
Page 19 and 20: DRAFT Table 2.4.5: Transmission T o
Page 21 and 22: DRAFT Figure 2.4.15: Resolution nec
Page 23 and 24: DRAFT Figure 2.4.17: Spectrometer m
Page 25 and 26: DRAFT Table 2.4.8: Design parameter
Page 27 and 28: DRAFT Figure 2.4.20: Side view of t
Page 29 and 30: DRAFT Figure 2.4.23: Coil cross-sec
Page 31 and 32: DRAFT Figure 2.4.25: Flux density d
Page 33 and 34: Figure 2.4.29: Assembly of two half
Page 35: DRAFT Figure 2.4.31: Cross section
Page 39 and 40: DRAFT To fulfill the required field
Page 41 and 42: DRAFT Figure 2.4.39: The 3D model o
Page 43 and 44: DRAFT Pole radius mm 100 210 250 25
Page 45 and 46: DRAFT Figure 2.4.43: Front, side, a
Page 47 and 48: ∆B/B 0.0 DRAFT Figure 2.4.46: Ave
Page 49 and 50: DRAFT Figure 2.4.50: 3D model of th
Page 51 and 52: DRAFT Figure 2.4.54 and Table 2.4.1
Page 53 and 54: DRAFT 2.4.2.3.1 Radiation resistant
Page 55 and 56: DRAFT The water-cooled radiator con
Page 57 and 58: DRAFT Table 2.4.17: Coil parameters
Page 59 and 60: DRAFT Figure 2.4.63: Field distribu
Page 61 and 62: DRAFT Figure 2.4.65: Multiplet conf
Page 63 and 64: DRAFT Table 2.4.21 summarizes the r
Page 65 and 66: 2.4.2.6 Current Leads DRAFT The cur
Page 67 and 68: DRAFT Table 2.4.23 presents the lis
Page 69 and 70: 2.4.3 Power Converters DRAFT The po
Page 71 and 72: SCR structure DRAFT Regarding high
Page 73 and 74: a) Chopper circuit 3x400V b) Half b
Page 75 and 76: External Control System Data transf
Page 77 and 78: DRAFT Figure 2.4.77: Arrangement of
Page 79 and 80: SuperFRS Power Supply Effective App
Page 81 and 82: DRAFT The locations for the differe
Page 83 and 84: DRAFT Figure 2.4.80: Beam induced f
Page 85 and 86: 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
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2.4.11.1.4 Design of the beam catch
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DRAFT Figure 2.4.110: Calculated eq
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DRAFT Figure 2.4.112: Location of b
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DRAFT the carbon. Again mainly 7 Be
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DRAFT maintenance of the carbon or
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DRAFT material) and received the an
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DRAFT commissioned in February 2005
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DRAFT Table 2.4.28: Typical beam pa
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DRAFT Figure 2.4.120: Surface tempe
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DRAFT Figure 2.4.123: Schematic lay
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DRAFT These results show that the i
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DRAFT Like in the case of the rotat
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DRAFT Figure 2.4.126: Left: Schemat
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DRAFT Figure 2.4.129: Flow scheme o
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DRAFT Since the weight of the cold
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DRAFT With the cooling capacity spe
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DRAFT Figure 2.4.134: Schematic of
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S1 (a) Figure 2.4.136: (a) Zoom of
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2.4.A Appendix DRAFT The appendix o
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DRAFT experiment the EXL community
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2.4.A1.3 Slow control and monitorin
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DRAFT Figure 2.4.139: Architecture
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DRAFT all FAIR accelerators will be
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DRAFT source tier are split in two
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DRAFT coupled from the ACS which is
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DRAFT 2.4.A3.2 Work packages: descr
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2.4.A3.2.4 Instrumentation Measurin
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DRAFT this, planning a network layo
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DRAFT 2.4.A3.3 Machine characterist
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DRAFT installation of RALF was done
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DRAFT The double ring synchrotrons,
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DRAFT The first refrigerator, Cryo1
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DRAFT shield 28874 + 25 g/s 22 bar
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LHe storage Helium storage Helium s
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Cryo2 Cryo3 CryoST DB 3 DRAFT Compr
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DRAFT The cold connection will be m
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DRAFT Measurements planned for each
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DRAFT For magnets with less stringe
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DRAFT The value, parameters, condit
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DRAFT 3. Geometry tests For cryosta
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DRAFT The Quench Heaters Tests has
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DRAFT Figure 2.4.159: Photograph of
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DRAFT The field properties listed i
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DRAFT Figure 2.4.161: Schematic vie
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DRAFT Figure 2.4.162: Scheme of the
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2.4.A6.2.2 Shielding against direct
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DRAFT Figure 2.4.165: An iron beam
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DRAFT In a side view the flux of pr
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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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Technical Design Report Super Fragment Separator

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