Stabilization of betatron tune in Indus-2 storage ring

Saroj Jena; S. Yadav; R. K. Agrawal; A. D. Ghodke; Pravin Fatnani; T. A. Puntambekar

doi:10.1088/1674-1137/38/6/067002

Chinese Physics C> 2014, Vol. 38> Issue(6) : 067002 DOI: 10.1088/1674-1137/38/6/067002

Stabilization of betatron tune in Indus-2 storage ring

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Abstract：
Indus-2 is a synchrotron radiation source that is operational at RRCAT, Indore, India. It is essentially pertinent in any synchrotron radiation facility to store the electron beam without beam loss. During the day to day operation of Indus-2 storage ring, difficulty was being faced in accumulating higher beam current. After examination, it was found that the working point was shifting from its desired value during accumulation. For smooth beam accumulation, a fixed desired tune in both horizontal and vertical plane plays a significant role in avoiding beam loss via the resonance process. This required a betatron tune feedback system to be put in the storage ring. After putting ON this feedback, the beam accumulation was smooth. The details of this feedback and its working principle are described in this paper.

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Singh G, Sahoo G K, Angel D, Singh B, Ghodke A D, Kant P. IJAP, 1997 35(1): 183-192[2] Ghodke A D. Riyasat Husain, Gurnam Singh. ICFA Beam Dynamics Newsletter, 2006, 41: 77-95[3] Bryant P J, Johnsen K. The Principle of Circular Accelerator and Storage Ring. UK: Cambridge University Press, 2005[4] Yadav S, Tiyagi Y, Puntambekar T A, Pithawa C K. Proc. Indian Particle Accelerator Conf. (Indore), 2009[5] MATLAB mathworks.com[6] Berrig O, Jonker M, Lohmann K D, Morpurgo G. The Q- Loop: A Function Driven Feedback System for the Betatron Tunes During the LEP Energy Ramp. CERN SL-98-039 BI[7] KUO C H, Chiu P C, HU K H, WU C Y, LIAO C Y, CHENG Y S, Jenny Chen, Hsu K T. Commissioning of tune feedback in the Taiwan Light Source. Proc. Int. Particle Accelerator Conf. (San Sebastian), 2011[8] Minty M et al. High Precision Tune and Coupling Feedback and Beam Transfer Function Measurements in RHIC. Proc. Int. Particle Accelerator Conf. (Kyoto). 2010[9] Terebilo A. Accelerator Toolbox for MATLAB SLAC-PUB 8732

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Saroj Jena, S. Yadav, R. K. Agrawal, A. D. Ghodke, Pravin Fatnani and T. A. Puntambekar. Stabilization of betatron tune in Indus-2 storage ring[J]. Chinese Physics C, 2014, 38(6): 067002. doi: 10.1088/1674-1137/38/6/067002

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Received: 2013-06-21
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Stabilization of betatron tune in Indus-2 storage ring

Corresponding author: Saroj Jena,

Received Date: 2013-06-21
Accepted Date: 1900-01-01
Available Online: 2014-06-05

Abstract: Indus-2 is a synchrotron radiation source that is operational at RRCAT, Indore, India. It is essentially pertinent in any synchrotron radiation facility to store the electron beam without beam loss. During the day to day operation of Indus-2 storage ring, difficulty was being faced in accumulating higher beam current. After examination, it was found that the working point was shifting from its desired value during accumulation. For smooth beam accumulation, a fixed desired tune in both horizontal and vertical plane plays a significant role in avoiding beam loss via the resonance process. This required a betatron tune feedback system to be put in the storage ring. After putting ON this feedback, the beam accumulation was smooth. The details of this feedback and its working principle are described in this paper.

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Stabilization of betatron tune in Indus-2 storage ring

Corresponding author: Saroj Jena,

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