Since the finding of the space charge fourth order 4σ=360<SUP>o</SUP> resonance [Jeon et al., 2009 [3]], studies have been carried out to better understand the fourth order resonance and the envelope instability in high intensity lin...
http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
https://www.riss.kr/link?id=A107524561
2016
-
SCI,SCIE,SCOPUS
학술저널
43-50(8쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
Since the finding of the space charge fourth order 4σ=360<SUP>o</SUP> resonance [Jeon et al., 2009 [3]], studies have been carried out to better understand the fourth order resonance and the envelope instability in high intensity lin...
Since the finding of the space charge fourth order 4σ=360<SUP>o</SUP> resonance [Jeon et al., 2009 [3]], studies have been carried out to better understand the fourth order resonance and the envelope instability in high intensity linear accelerators. The questions remained unanswered under what conditions the envelope instability is excited or suppressed following the development of the fourth order resonance. Simulations suggest that the variation of σ<SUB>o</SUB> and σ along the linac, the halo particles and the resonance islands of the fourth order resonance play an important role in exciting or suppressing the envelope instability after the fourth order resonance is manifested for initially well-matched beams. Here σ(σ<SUB>o</SUB>) is the depressed (zero-current) phase advance per cell. The envelope instability is excited from the mismatch generated by the fourth order resonance, 1) when σ<SUB>o</SUB> is maintained approximately constant or increases along the linac with σ<SUB>o</SUB>>90<SUP>o</SUP> and 2) when the extent of the fourth order resonance shrinks, as σ increases approaching 90<SUP>o</SUP>. On the other hand, when σ stays almost constant (maintaining the fourth order resonance) or when σ<SUB>o</SUB> decreases and gets close to 90<SUP>o</SUP> (getting out of the envelope instability), the envelope instability is suppressed and the halo particles formed by the fourth order resonance preserves a four-fold structure in the phase space.
Digital silicon photomultiplier readout of a new fast and bright scintillation crystal (Ce:GFAG)
Growth and scintillation characterization of Ce3+-doped Rb2LiGdBr6 single crystals