Dynamic Response of Graphitic Targets with Tantalum Cores Impacted by Pulsed 440-GeV Proton Beams

Table 3

Comparison of frequency components identified in the FFT of the experimental results, the FFT of the simulations for a beam intensity of 1 × 10¹¹ ppp, and modal analysis of the target geometry. Frequencies obtained from FFT have a systematic error of ±10 kHz.

Experiment FFT (kHz)		Simulation FFT (kHz)	Modal analysis (kHz)
1 × 10^11 ppp	6 × 10^11 ppp	1 × 10^11 ppp
160	170	170	153.4/186.4
330	330	330	319.5
460	470	480	477.3
-	810	800	804.0
910	910	880	899.7
980	990	980	978.4