RASTER SCAN CONTROL SYSTEM FOR A CHARGED-PARTICLE BEAM
    113.
    发明授权
    RASTER SCAN CONTROL SYSTEM FOR A CHARGED-PARTICLE BEAM 失效
    GRID-SENSE控制系统带电粒子一堆

    公开(公告)号:EP0465597B1

    公开(公告)日:1997-05-28

    申请号:EP90906574.0

    申请日:1990-03-30

    Abstract: A raster scan control system (18) for use with a charged-particle beam delivery system (20) provides precise control of large currents driving an inductive load. The beam delivery system includes a nozzle through which a charged-particle beam (24), such as a proton beam, passes prior to being directed to a target (32). The nozzle includes both fast and slow sweep scan electromagnets (204, 208) that cooperate to generate a sweeping magnetic field that steers the beam along a desired raster scan pattern at the target. The electromagnets are driven by large currents (213, 215) from the raster scan control system. The raster scan control system includes both fast and slow power amplifiers (212, 214) for delivering the desired large currents to the fast and slow electromagnets, respectively; monitoring means (206, 210) for monitoring the magnetic fields; sensing means (212, 230) for sensing the large currents; feedback means for maintaining the magnetic fields and large current at desired levels; out of tolerance means for automatically causing the servo power amplifiers to steer the beam away from the target area in the event the error signal becomes excessive; a programmable raster generator (80) for providing the fast and slow power amplifiers with a raster scan signal (216, 218) that defines the desired raster pattern; and a power supply (74) for delivering the requisite power to the power amplifiers and other components.

    NATRIURETIC HORMONE
    115.
    发明公开
    NATRIURETIC HORMONE 失效
    利钠激素。

    公开(公告)号:EP0429480A1

    公开(公告)日:1991-06-05

    申请号:EP89908739.0

    申请日:1989-07-10

    CPC classification number: A61K35/22 A61K31/56

    Abstract: A purified naturally occurring natriuretic compound, identified as Natriuretic Hormone, and a method for isolation of the compound. The natriuretic compound has a molecular weight of about 360, a molecular formula of C21H28O5 and with a steroidal nucleus. The compound is useful as a diuretic in the treatment of diseases such as heart disease and hypertension.

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