Technical Design Report Super Fragment Separator

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DRAFT Figure 2.4.69: General layout of vapour-cooled leads. 2.4.2.7 Quench detection A single superferric magnet is self-protecting. This means that if it is short-circuited with a superconducting bypass, it does not need any external protection. In case of quench, the magnetic energy will be used to heat up the coil. If all the magnetic energy is converted as heat at the end of the quench, when the current is null, the maximum temperature Tmax would be between 250 and 350 K. To avoid too large thermal stresses accompanied with such temperatures may destabilize the coil. It seems more reasonable to keep Tmax lower than 200 K. To limit the temperature rise the current will be dumped by means of an external resistor with a time constant τ. Each superferric magnet will have two copper current leads. They will be designed so that if one lead faces a thermal runaway, it will withstand the current during the runaway detection time plus the dumping time with the time constant τ. Super-FRS dipoles will be powered in series of three. All the other magnets types are expected to be powered individually. Figure 2.4.70 presents how the quench protection will be done. In all cases, the current will be dumped by means of a resistor. The current link from one magnet to another will be warm. The quench detection material for one magnet is: 1 bridge for the magnet and 2 CL1 units (that detects the thermal runaway in the current leads). We note that the magnet has only one voltage tap. The two other bridge taps are taken from the current leads which enables to take into account the very small bus bars that connect the magnet to the leads. Steerers will also be self-protecting magnets. Their protection scheme will be the same as the one presented in Figure 2.4.70. dump resistor 300 K CL1 Unit Copper current lead Bridge Cryostat Voltage tap CL1 Unit 4 K 300 K CL1 Unit CL1 Unit Bridge Figure 2.4.70: Power circuit and quench detection for 1 to 3 Super-FRS superferric magnets. One magnet 66
DRAFT Table 2.4.23 presents the list of the superferric magnets in the Super-FRS and also in the associated beamlines (focusing system, experimental caves, connection to the rings). Table 2.4.24 gives the corresponding electronics for quench detection. Table 2.4.23: List of the superferric magnets in the Super-FRS and the associated beamlines. location dipole quadrupole (long) quadrupole (short) octupole hexapole steerers Focussing system 0 8 0 0 0 between PF1 and PF2 0 2 1 1 3 between PF2-PF3 0 2 1 1 4 between PF3-PF4 3 1 2 2 1 between PF4-MF1 3 2 4 4 4 between MF1-MF2 3 2 4 4 4 between MF2-MF3 3 2 4 4 4 between MF3-MF8 0 2 4 4 4 12 between MF8-MF9 3 2 4 4 4 between MF9-MF12 4 1 6 6 0 MF3.5-MF4 3 1 2 2 1 MF2.5-MF5 0 1 2 2 2 MF5-MF6 3 2 4 4 4 MF6-MF7 3 2 4 4 4 Total Super-FRS 28 30 42 42 39 after MF4 0 1 2 2 0 after MF12 0 0 3 3 0 after MF7 0 1 2 2 0 Total 28 32 49 49 39 12 Table 2.4.24: Quench detection electronics in the Super-FRS. Super FRS magnet Bridge Current lead Unit (CLU1) total number 209 209 418 67
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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
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 and 36: DRAFT Figure 2.4.31: Cross section
Page 37 and 38: Figure 2.4.34: Sketch of the therma
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: 2.4.2.6 Current Leads DRAFT The cur
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
Page 87 and 88: DRAFT Figure 2.4.84: Left panel: TP
Page 89 and 90: DRAFT extracted beams. Its use for
Page 91 and 92: Time of Flight measurement DRAFT At
Page 93 and 94: DRAFT together. Another option is t
Page 95 and 96: DRAFT Figure 2.4.88: Pillow seal po
Page 97 and 98: DRAFT Figure 2.4.90: Setup at the m
Page 99 and 100: DRAFT An overview of the total vacu
Page 101 and 102: 2.4.7.4 Appendix - Technical Drawin
Page 103 and 104: DRAFT Figure 2.4.96: Diagnostic cha
Page 105 and 106: DRAFT Figure 2.4.98: Diagnostic cha
Page 107 and 108: DRAFT Figure 2.4.100: Diagnostic ch
Page 109 and 110: 2.4.8 Particles Sources n/a 2.4.9 E
Page 111 and 112: DRAFT movable, but BC3 must be able
Page 113 and 114: DRAFT Figure 2.4.106: Spot size of
Page 115 and 116: 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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