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Soft X-Ray Diagnostic System for HT-7 and EAST Tokamaks

HT-7. ASIPP. Soft X-Ray Diagnostic System for HT-7 and EAST Tokamaks. LIQUN HU. HT-7. ASIPP. Physical features of the diagnostic. I SXR  N e , T e , Z eff.

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Soft X-Ray Diagnostic System for HT-7 and EAST Tokamaks

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  1. HT-7 ASIPP Soft X-Ray Diagnostic System for HT-7 and EAST Tokamaks LIQUN HU

  2. HT-7 ASIPP Physical features of the diagnostic ISXR Ne, Te, Zeff • A chord-integrated measurement—point measurement, high resolution in space and high temporal response in time to the variations happened inside of the plasma. • The intensity distribution and evolution and tomography of SXR radiation-------information on the plasma structure, MHD instability, sawtooth instability, phenomena occurring during major disruptions, heat pulse propagation transport et al.

  3. HT-7 Vertical array with 37 detectors of SBDs Au-Si detector Slot-aperture with a movable slider covered with Be foils Au-Si detector Horizontal array with 37 detectors of SBDs ASIPP Two multi-channel arrays, 37 detectors of rectangular Au-Si SBDs with active area of 320 mm2, a pinhole camera like SXR Array Diagnostic Features in HT-7 Sensitive energy region: 0.5-1.5keV Spatial resolution: 1.5cm Time resolution: 5s The outmost chord: 27cm Arc-shape SS pedestal with R=55cm (H) and R=60cm (V) Thin slot-apertures : 520 mm2 (V) 425 mm2 (H) A different adjustable mechanism for 4 thickness of Beryllium absorption foils : 5~6m, 12~13m, 25m, and full open

  4. HT-7 ASIPP SXR Array Diagnostic with SBDs in HT-7 Plug-in electronics and fast connectors for convenient repairing of the system

  5. HT-7 Au-Si detector Signal current transform to Voltage Voltage preamplifier with variable gain Sawtooth Heat Pulse Propagation for e Output DC Regulator Rejecter CAMAC Power supply ~220V VAX3300 Computer ASIPP Schematic drawing of electronics and data acquisition Differential Circuit

  6. HT-7 ASIPP Modification of HT-7 SXR detector HAMAMATSU: S4114-46N/35N Low terminal capacitor and high speed Down: 0.510mm slit, 1.6cm~0.7cm Below: 0.510mm slit, 1.6cm~0.7cm Above: 1.010mm slit, 1.5cm~0.9cm

  7. HT-7 ASIPP HT-7U SXR Pinhole Camera 11, each with 46 elements, 3 toroidal positions, 1-20keV, 1.0cm, cooling plate, adjustable mechanism for protection.

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