Magnetic induction beam monitors of the NESTOR facility

作者：Trotsenko V I^*; Lyashchenko V N; Karnaukhov I M; Ivashchenko V E

来源：Instruments and Experimental Techniques, 2014, 57(5): 566-571.

DOI：10.1134/S0020441214040198

A magnetic induction monitor of the beam center position, operating in the damped self-oscillating mode, and a beam current amplitude monitor, operating in the pulse mode, are described. These monitors are placed in the transport channel of the N100M electron storage ring of the NESTOR facility. The signal processing module of the monitors has been produced to the CAMAC standard using a field programmable gate array (FPGA). The signals from the sensors are measured by 12-bit 40-MHz analog-to-digital converters. The expressions for calculating beam coordinates X and Y in the form of two third-order polynomials and the sensitivity of the sensors in the center of the monitors have been determined by testing on the test bench. The sensitivity of the current sensor is 17.5 V/A, and that of the position sensors is 4.25 V/A. The construction of the monitors, designed electronics, and procedure allow one to measure the position of the beam current center in an aperture of 24 mm with an accuracy of 7% and the beam current amplitude with an accuracy of 5% for single current pulses of the linear accelerator.

• 出版日期2014-9