Technical Design Report Super Fragment Separator

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DRAFT 2.4.7.2 Maintenance and handling of highly-radioactive components The service platform mentioned above, where all radiation-sensitive devices are located (pumps, polymer vacuum seals, media connectors) allows manual intervention during shut-down periods. After media and vacuum disconnection, plugs will be removed vertically by a heavy-load crane and will be inserted in shielded transport containers in which they can be safely transported to either a storage position (in case a new module is to be inserted) or a hot cell (in case repairs have to be performed on a module). The transport container ensures that highly-activated components are never exposed to the surrounding areas thus manual intervention is possible in case of crane malfunction. 2.4.7.3 Maintenance and handling in low-radiation areas Contrary to the high-radiation areas, the less activated areas in the Super-FRS will be placed in a wide tunnel (approximately 7 m). Maintenance here can be done by using an industrial robot equipped with appropriate tools to disconnect devices from the vacuum containers and the media and to remove them from their respective flanges. A well-shielded storage area has to prevent radiation damage to the robot during beam-on periods. All other concepts can be easily adapted from current FRS robot operation techniques. 2.4.7.4 Vacuum system The vacuum system, pumps, valves and controls, will be based on the experience gained at the present FRS. The requirements for the vacuum system of the Super-FRS are mainly determined by the necessity to be coupled to the UHV systems of the storage rings and to the driver accelerator without applying any separation foil. At the relatively low primary beam intensity at the present FRS a thin titanium window is used between the separator and the vacuum of the beam line to the SIS18. At the Super-FRS such a window would not survive the interaction of the high-intensity fast extracted beam. A foil between the achromatic final focal plane and the collector ring would severely disturb the experimental conditions, especially for the heaviest fragments which are not fully ionized at a kinetic energy corresponding to 13 Tm. In summary, we aim at pressures of better than 10 -7 mbar and will use UHV compatible materials inside the vacuum chambers. For the pump-down a combination of turbo molecular pumps and dry roughing pumps will be used. The residual gas pressure will be of course slightly higher in the Pre-Separator with the pillow seals, the hot materials due the energy deposition of the primary beam and the plug system compared to other sections of the Super-FRS. The vacuum system of Super-FRS will be divided into 15 vacuum sectors. They will be separated from each other by 14 gate valves and 2 quick closing valves. Two typical vacuum chambers including the corresponding valves, pumps and focal-plane equipment are shown in Figure 2.4.90 and Figure 2.4.91. Standard stainless steal (AISI 304) will be used for vacuum chambers (pumping, diagnostic, etc.). 96
DRAFT Figure 2.4.90: Setup at the mid focal plane of the Pre-Separator (PF2). A complete degrader system is depicted, the vacuum chamber equipped with valve and pumps. In front of the degrader system a pair of slits in x- and y-direction is mounted. Two universal detector systems have been placed at suitable distance in the vacuum chamber to measure the position and angles of the ions at the different intensities. All movable components can be remotely operated. Since PF2 can have a significant radiation field any maintenance will be done with a robot system. First experience with such robots is presently gained at the FRS, where one device has been installed at the first focal plane. A photograph of the robot at the first focal plane of the FRS is shown in Figure 2.4.93. 97
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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
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
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: DRAFT Figure 2.4.88: Pillow seal po
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
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 143 and 144: DRAFT Figure 2.4.128: Schematic lay
Page 145 and 146: 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 2.4.164: Schematic lay
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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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