First experience with electron lenses for beam-beam compensation in RHIC

W. Fischer; X. Gu; S. M. White; Z. Altinbas; D. Bruno; M. Costanzo; J. Hock; A. Jain; Y. Luo; C. Mi; R. Michnoff; T. A. Miller; A. I. Pikin; T. Samms; Y. Tan; R. Than; P. Thieberger

First experience with electron lenses for beam-beam compensation in RHIC

W. Fischer
, X. Gu
, S. M. White
, Z. Altinbas
, D. Bruno
, M. Costanzo
, J. Hock
, A. Jain
, Y. Luo
, C. Mi
, R. Michnoff
, T. A. Miller
, A. I. Pikin
, T. Samms
, Y. Tan
, R. Than
, P. Thieberger

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

5 Scopus citations

Abstract

The head-on beam-beam interaction is the dominant luminosity limiting effect in polarized proton operation in RHIC. To mitigate this effect an electron lens was installed in each of the two RHIC rings. We summarize the hardware and electron beam commissioning results to date, and report on the first experience with the electron-hadron beam interaction. In 2014 to date, RHIC has operated with gold beams only. In this case the luminosity is not limited by head-on beam-beam interactions and compensation is not necessary. The goals of this years commissioning efforts are a test of all instrumentation; the demonstration of electron and gold beam overlap; the demonstration of electron beam parameters that are sufficiently stable to have no negative impact on the gold beam lifetime; and the measurement of the tune footprint compression from the beam overlap. With these demonstrations, and a lattice with a phase advance that has a multiple of 180 degrees between the beam-beam interaction and electron lens locations, head-on beam-beam compensation can be applied in the following year with proton beams.

Original language	English
Title of host publication	IPAC 2014
Subtitle of host publication	Proceedings of the 5th International Particle Accelerator Conference
Publisher	Joint Accelerator Conferences Website (JACoW)
Pages	913-917
Number of pages	5
ISBN (Electronic)	9783954501328
State	Published - Jul 1 2014
Externally published	Yes
Event	5th International Particle Accelerator Conference, IPAC 2014 - Dresden, Germany Duration: Jun 15 2014 → Jun 20 2014

Publication series

Name	IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference

Conference

Conference	5th International Particle Accelerator Conference, IPAC 2014
Country/Territory	Germany
City	Dresden
Period	06/15/14 → 06/20/14

Cite this

Fischer, W., Gu, X., White, S. M., Altinbas, Z., Bruno, D., Costanzo, M., Hock, J., Jain, A., Luo, Y., Mi, C., Michnoff, R., Miller, T. A., Pikin, A. I., Samms, T., Tan, Y., Than, R., & Thieberger, P. (2014). First experience with electron lenses for beam-beam compensation in RHIC. In IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference (pp. 913-917). (IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference). Joint Accelerator Conferences Website (JACoW).

@inproceedings{5f099b4a7c184f74b07105789e2c4971,

title = "First experience with electron lenses for beam-beam compensation in RHIC",

abstract = "The head-on beam-beam interaction is the dominant luminosity limiting effect in polarized proton operation in RHIC. To mitigate this effect an electron lens was installed in each of the two RHIC rings. We summarize the hardware and electron beam commissioning results to date, and report on the first experience with the electron-hadron beam interaction. In 2014 to date, RHIC has operated with gold beams only. In this case the luminosity is not limited by head-on beam-beam interactions and compensation is not necessary. The goals of this years commissioning efforts are a test of all instrumentation; the demonstration of electron and gold beam overlap; the demonstration of electron beam parameters that are sufficiently stable to have no negative impact on the gold beam lifetime; and the measurement of the tune footprint compression from the beam overlap. With these demonstrations, and a lattice with a phase advance that has a multiple of 180 degrees between the beam-beam interaction and electron lens locations, head-on beam-beam compensation can be applied in the following year with proton beams.",

author = "W. Fischer and X. Gu and White, \{S. M.\} and Z. Altinbas and D. Bruno and M. Costanzo and J. Hock and A. Jain and Y. Luo and C. Mi and R. Michnoff and Miller, \{T. A.\} and Pikin, \{A. I.\} and T. Samms and Y. Tan and R. Than and P. Thieberger",

note = "Publisher Copyright: Copyright {\textcopyright} 2014 CC-BY-3.0 and by the respective authors.; 5th International Particle Accelerator Conference, IPAC 2014 ; Conference date: 15-06-2014 Through 20-06-2014",

year = "2014",

month = jul,

day = "1",

language = "English",

series = "IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference",

publisher = "Joint Accelerator Conferences Website (JACoW)",

pages = "913--917",

booktitle = "IPAC 2014",

}

Fischer, W, Gu, X, White, SM, Altinbas, Z, Bruno, D, Costanzo, M, Hock, J, Jain, A, Luo, Y, Mi, C, Michnoff, R, Miller, TA, Pikin, AI, Samms, T, Tan, Y, Than, R & Thieberger, P 2014, First experience with electron lenses for beam-beam compensation in RHIC. in IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference. IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference, Joint Accelerator Conferences Website (JACoW), pp. 913-917, 5th International Particle Accelerator Conference, IPAC 2014, Dresden, Germany, 06/15/14.

First experience with electron lenses for beam-beam compensation in RHIC. / Fischer, W.; Gu, X.; White, S. M. et al.
IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference. Joint Accelerator Conferences Website (JACoW), 2014. p. 913-917 (IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - First experience with electron lenses for beam-beam compensation in RHIC

AU - Fischer, W.

AU - Gu, X.

AU - White, S. M.

AU - Altinbas, Z.

AU - Bruno, D.

AU - Costanzo, M.

AU - Hock, J.

AU - Jain, A.

AU - Luo, Y.

AU - Mi, C.

AU - Michnoff, R.

AU - Miller, T. A.

AU - Pikin, A. I.

AU - Samms, T.

AU - Tan, Y.

AU - Than, R.

AU - Thieberger, P.

PY - 2014/7/1

Y1 - 2014/7/1

N2 - The head-on beam-beam interaction is the dominant luminosity limiting effect in polarized proton operation in RHIC. To mitigate this effect an electron lens was installed in each of the two RHIC rings. We summarize the hardware and electron beam commissioning results to date, and report on the first experience with the electron-hadron beam interaction. In 2014 to date, RHIC has operated with gold beams only. In this case the luminosity is not limited by head-on beam-beam interactions and compensation is not necessary. The goals of this years commissioning efforts are a test of all instrumentation; the demonstration of electron and gold beam overlap; the demonstration of electron beam parameters that are sufficiently stable to have no negative impact on the gold beam lifetime; and the measurement of the tune footprint compression from the beam overlap. With these demonstrations, and a lattice with a phase advance that has a multiple of 180 degrees between the beam-beam interaction and electron lens locations, head-on beam-beam compensation can be applied in the following year with proton beams.

AB - The head-on beam-beam interaction is the dominant luminosity limiting effect in polarized proton operation in RHIC. To mitigate this effect an electron lens was installed in each of the two RHIC rings. We summarize the hardware and electron beam commissioning results to date, and report on the first experience with the electron-hadron beam interaction. In 2014 to date, RHIC has operated with gold beams only. In this case the luminosity is not limited by head-on beam-beam interactions and compensation is not necessary. The goals of this years commissioning efforts are a test of all instrumentation; the demonstration of electron and gold beam overlap; the demonstration of electron beam parameters that are sufficiently stable to have no negative impact on the gold beam lifetime; and the measurement of the tune footprint compression from the beam overlap. With these demonstrations, and a lattice with a phase advance that has a multiple of 180 degrees between the beam-beam interaction and electron lens locations, head-on beam-beam compensation can be applied in the following year with proton beams.

UR - https://www.scopus.com/pages/publications/84928317909

M3 - Conference contribution

AN - SCOPUS:84928317909

T3 - IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference

SP - 913

EP - 917

BT - IPAC 2014

PB - Joint Accelerator Conferences Website (JACoW)

T2 - 5th International Particle Accelerator Conference, IPAC 2014

Y2 - 15 June 2014 through 20 June 2014

ER -

Fischer W, Gu X, White SM, Altinbas Z, Bruno D, Costanzo M et al. First experience with electron lenses for beam-beam compensation in RHIC. In IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference. Joint Accelerator Conferences Website (JACoW). 2014. p. 913-917. (IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference).

First experience with electron lenses for beam-beam compensation in RHIC

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