BEAM ENERGY MEASUREMENT SYSTEM
    1.
    发明公开

    公开(公告)号:EP3554199A8

    公开(公告)日:2020-01-08

    申请号:EP18167210.6

    申请日:2018-04-13

    IPC分类号: H05H9/00 H05H7/00

    摘要: A time-of-flight (TOF) measurement system for measuring energy of a pulsed hadron beam, wherein each pulse of the beam is structured into a series of bunches (B) of charged particles, said bunches being repeated according to a repetition rate of the order of magnitude of radiofrequency. The system comprises
    a first detector (1), a second detector (2) and a third detector (3) arranged along a beam path (10), each of the detectors being configured to detect the passage of a bunch (B) of charged particles and provide an output signal (v PP,1 , v PP,2 , v PP,3 ) dependent on phase of the detected bunch (B), wherein the second detector (2) is spaced apart from the first detector (1) by a first distance (L 12 ) and wherein the third detector (3) is spaced apart from the second detector (2) by a second distance (L 23 ), wherein the first distance is set out in such a way as that time of flight (t 12 ) of the bunch (B) from the first detector (1) to the second detector (2) is approximately equal to, or lower than a repetition period (T RFQ ) of the bunches (B), and wherein the second distance is set out in such a way as that time of flight (T 23 ) of the bunch (B) from the second detector (2) to the third detector (3) is greater than a multiple of the repetition period (T RFQ ) of the bunches (B), and
    a processing unit (7) configured to
    a) calculate phase shifts (Δ ϕ12 , Δ ϕ13 , Δ ϕ23 ) between the output signals (v PP,1 , v PP,2 , v PP,3 ) of the detectors (1, 2, 3), and
    b) calculate energy (E) of the pulse based on the calculated phase shifts.