Rectifying unexpected injection issues due to an elliptically polarizing undulator

被引：0
|
作者：
Wurtz, W. A. [1 ]
Baribeau, C. K. [1 ]
Sigrist, M. J. [1 ]
机构：
[1] Univ Saskatchewan, Canadian Light Source Inc, Saskatoon, SK S7N 2V3, Canada
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2023年 / 1048卷
基金：
加拿大创新基金会; 加拿大自然科学与工程研究理事会; 加拿大健康研究院;
关键词：
Storage ring; Injection; Insertion device; Dynamic aperture; Field integral; T WIGGLER;
D O I：
10.1016/j.nima.2022.168001
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Top-up operation requires high efficiency injection with insertion devices at small gaps. We present a case study of one elliptically polarizing undulator at the Canadian Light Source that unexpectedly began having a detrimental impact on injection efficiency after operating for many years without issue. By performing beam -based measurements in the storage ring and magnetic measurements in our magnetic measurement laboratory, we built a model that provided an explanation and a remedy. An unrelated change in the vertical limiting physical aperture coupled to an octupole resonance caused a loss of dynamic aperture that explained the decreased injection efficiency. The remedy was to change the on-axis tunes of the storage ring, avoiding the resonance. We hope this detailed and thorough case study may help other laboratories to maintain high injection efficiency while requiring a minimum of restrictions on insertion device operating ranges.
引用
收藏
页数：10
相关论文
共 25 条
  • [1] Performance of the elliptically polarizing undulator on SPEAR
    Carr, R.
    Kortright, J.B.
    Rice, M.
    Lidia, S.
    Review of Scientific Instruments, 1995, 66 (2 pt 2):
  • [2] Elliptically polarizing undulator end designs
    Schlueter, Ross D.
    Marks, Steve
    Prestemon, Soren
    IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2006, 16 (02) : 1582 - 1585
  • [3] Control for elliptically polarizing undulator at SRRC
    Pan, KT
    Chen, J
    Chen, JS
    Chen, CS
    Kuo, CH
    Hsu, SY
    Hsu, KT
    ACCELERATOR AND LARGE EXPERIMENTAL PHYSICS CONTROL SYSTEMS, 1997, : 614 - 616
  • [4] PERFORMANCE OF THE ELLIPTICALLY POLARIZING UNDULATOR ON SPEAR
    CARR, R
    KORTRIGHT, JB
    RICE, M
    LIDIA, S
    REVIEW OF SCIENTIFIC INSTRUMENTS, 1995, 66 (02): : 1862 - 1864
  • [5] Commissioning of the LNLS Elliptically Polarizing Undulator
    Citadini, J.
    Abreu, N. P.
    Farias, R. H. A.
    Ferreira, M. J.
    Franco, J. G. R. S.
    Gouveia, A. F.
    Jahnel, L. C.
    Liu, L.
    Resende, X. R.
    Tavares, P. F.
    Tosin, G.
    2007 IEEE PARTICLE ACCELERATOR CONFERENCE, VOLS 1-11, 2007, : 719 - 721
  • [6] Advanced light source elliptically polarizing undulator
    Lawrence Berkeley Lab, Berkeley, United States
    Proc IEEE Part Accel Conf, (3221-3223):
  • [7] The advanced light source elliptically polarizing undulator
    Marks, S
    Cortopassi, C
    DeVries, J
    Hoyer, E
    Leinbach, R
    Minamihara, Y
    Padmore, H
    Pipersky, P
    Plate, D
    Schlueter, R
    Young, A
    PROCEEDINGS OF THE 1997 PARTICLE ACCELERATOR CONFERENCE, VOLS 1-3: PLENARY AND SPECIAL SESSIONS ACCELERATORS AND STORAGE RINGS - BEAM DYNAMICS, INSTRUMENTATION, AND CONTROLS, 1998, : 3221 - 3223
  • [8] Conceptual design of a hybrid-type elliptically polarizing undulator
    Sasaki, S
    REVIEW OF SCIENTIFIC INSTRUMENTS, 2002, 73 (03): : 1451 - 1453
  • [9] Performance modeling of an elliptically polarizing undulator under magnetic loading
    Wang, C
    Lin, MC
    Chang, CH
    Chen, CH
    Hwang, CS
    Fan, TC
    Chang, LH
    IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2000, 10 (01) : 210 - 213
  • [10] AN ELLIPTICALLY-POLARIZING UNDULATOR WITH PHASE ADJUSTABLE ENERGY AND POLARIZATION
    LIDIA, S
    CARR, R
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1994, 347 (1-3): : 77 - 82
123