Commissioning and future plans for polarized protons in RHIC

W. W. MacKay; L. Ahrens; M. Bai; G. Bunce; E. Courant; A. Deshpande; A. Drees; W. Fischer; H. Huang; K. Kurita; A. U. Luccio; Y. Makdisi; F. Pilat; V. Ptitsin; T. Roser; N. Saito; T. Satogata; S. Tepikian; D. Trbojevic; N. Tsoupas; J. Van Zeijts; H. Spinka; D. Underwood; A. Lehrach; I. Alekseev; V. Kanavets; D. Svirida; K. Imai; J. Tojo; B. Lozowski; V. Ranjbar; D. Fields

Commissioning and future plans for polarized protons in RHIC

W. W. MacKay
, L. Ahrens
, M. Bai
, G. Bunce
, E. Courant
, A. Deshpande
, A. Drees
, W. Fischer
, H. Huang
, K. Kurita
, A. U. Luccio
, Y. Makdisi
, F. Pilat
, V. Ptitsin
, T. Roser
, N. Saito
, T. Satogata
, S. Tepikian
, D. Trbojevic
, N. Tsoupas

J. Van Zeijts, H. Spinka, D. Underwood, A. Lehrach, I. Alekseev, V. Kanavets, D. Svirida, K. Imai, J. Tojo, B. Lozowski, V. Ranjbar, D. Fields

Physics and Astronomy

Brookhaven National Laboratory

Research output: Contribution to conference › Paper › peer-review

1 Scopus citations

Abstract

Polarized protons were injected and accelerated in the clockwise ring of RHIC to commission the first full helical Siberian snake ever used in an accelerator. With the snake turned on, the stable spin direction is in the horizontal plane. Vertically polarized protons were injected with the snake off. The snake was adiabatically ramped to give a spin rotation of 180° around a horizontal rotation axis about 13° from the longitudinal. When the beam was accelerated from injection G_γ = 46.5 to G_γ = 48 the spin flipped sign as expected and polarization was preserved. At G_γ = 48 without the snake, no polarization was observed since several spin resonances were crossed. Eventually polarized beam was accelerated to G_γ = 55.7 (29.1 GeV). In the next proton running period we plan to run with two full helical snakes in each ring and collide both transversely and longitudinally polarized protons at an energy around 100 GeV per beam.

Original language	English
Pages	24-26
Number of pages	3
State	Published - 2001
Event	2001 Particle Accelerator Conference - Chicago, IL, United States Duration: Jun 18 2001 → Jun 22 2001

Conference

Conference	2001 Particle Accelerator Conference
Country/Territory	United States
City	Chicago, IL
Period	06/18/01 → 06/22/01

Cite this

MacKay, W. W., Ahrens, L., Bai, M., Bunce, G., Courant, E., Deshpande, A., Drees, A., Fischer, W., Huang, H., Kurita, K., Luccio, A. U., Makdisi, Y., Pilat, F., Ptitsin, V., Roser, T., Saito, N., Satogata, T., Tepikian, S., Trbojevic, D., ... Fields, D. (2001). Commissioning and future plans for polarized protons in RHIC. 24-26. Paper presented at 2001 Particle Accelerator Conference, Chicago, IL, United States.

@conference{3beb41521dd148ef97fd8d19580af5cf,

title = "Commissioning and future plans for polarized protons in RHIC",

abstract = "Polarized protons were injected and accelerated in the clockwise ring of RHIC to commission the first full helical Siberian snake ever used in an accelerator. With the snake turned on, the stable spin direction is in the horizontal plane. Vertically polarized protons were injected with the snake off. The snake was adiabatically ramped to give a spin rotation of 180° around a horizontal rotation axis about 13° from the longitudinal. When the beam was accelerated from injection Gγ = 46.5 to Gγ = 48 the spin flipped sign as expected and polarization was preserved. At Gγ = 48 without the snake, no polarization was observed since several spin resonances were crossed. Eventually polarized beam was accelerated to Gγ = 55.7 (29.1 GeV). In the next proton running period we plan to run with two full helical snakes in each ring and collide both transversely and longitudinally polarized protons at an energy around 100 GeV per beam.",

author = "MacKay, \{W. W.\} and L. Ahrens and M. Bai and G. Bunce and E. Courant and A. Deshpande and A. Drees and W. Fischer and H. Huang and K. Kurita and Luccio, \{A. U.\} and Y. Makdisi and F. Pilat and V. Ptitsin and T. Roser and N. Saito and T. Satogata and S. Tepikian and D. Trbojevic and N. Tsoupas and \{Van Zeijts\}, J. and H. Spinka and D. Underwood and A. Lehrach and I. Alekseev and V. Kanavets and D. Svirida and K. Imai and J. Tojo and B. Lozowski and V. Ranjbar and D. Fields",

year = "2001",

language = "English",

pages = "24--26",

note = "2001 Particle Accelerator Conference ; Conference date: 18-06-2001 Through 22-06-2001",

}

MacKay, WW, Ahrens, L, Bai, M, Bunce, G, Courant, E, Deshpande, A, Drees, A, Fischer, W, Huang, H, Kurita, K, Luccio, AU, Makdisi, Y, Pilat, F, Ptitsin, V, Roser, T, Saito, N, Satogata, T, Tepikian, S, Trbojevic, D, Tsoupas, N, Van Zeijts, J, Spinka, H, Underwood, D, Lehrach, A, Alekseev, I, Kanavets, V, Svirida, D, Imai, K, Tojo, J, Lozowski, B, Ranjbar, V & Fields, D 2001, 'Commissioning and future plans for polarized protons in RHIC', Paper presented at 2001 Particle Accelerator Conference, Chicago, IL, United States, 06/18/01 - 06/22/01 pp. 24-26.

TY - CONF

T1 - Commissioning and future plans for polarized protons in RHIC

AU - MacKay, W. W.

AU - Ahrens, L.

AU - Bai, M.

AU - Bunce, G.

AU - Courant, E.

AU - Deshpande, A.

AU - Drees, A.

AU - Fischer, W.

AU - Huang, H.

AU - Kurita, K.

AU - Luccio, A. U.

AU - Makdisi, Y.

AU - Pilat, F.

AU - Ptitsin, V.

AU - Roser, T.

AU - Saito, N.

AU - Satogata, T.

AU - Tepikian, S.

AU - Trbojevic, D.

AU - Tsoupas, N.

AU - Van Zeijts, J.

AU - Spinka, H.

AU - Underwood, D.

AU - Lehrach, A.

AU - Alekseev, I.

AU - Kanavets, V.

AU - Svirida, D.

AU - Imai, K.

AU - Tojo, J.

AU - Lozowski, B.

AU - Ranjbar, V.

AU - Fields, D.

PY - 2001

Y1 - 2001

N2 - Polarized protons were injected and accelerated in the clockwise ring of RHIC to commission the first full helical Siberian snake ever used in an accelerator. With the snake turned on, the stable spin direction is in the horizontal plane. Vertically polarized protons were injected with the snake off. The snake was adiabatically ramped to give a spin rotation of 180° around a horizontal rotation axis about 13° from the longitudinal. When the beam was accelerated from injection Gγ = 46.5 to Gγ = 48 the spin flipped sign as expected and polarization was preserved. At Gγ = 48 without the snake, no polarization was observed since several spin resonances were crossed. Eventually polarized beam was accelerated to Gγ = 55.7 (29.1 GeV). In the next proton running period we plan to run with two full helical snakes in each ring and collide both transversely and longitudinally polarized protons at an energy around 100 GeV per beam.

AB - Polarized protons were injected and accelerated in the clockwise ring of RHIC to commission the first full helical Siberian snake ever used in an accelerator. With the snake turned on, the stable spin direction is in the horizontal plane. Vertically polarized protons were injected with the snake off. The snake was adiabatically ramped to give a spin rotation of 180° around a horizontal rotation axis about 13° from the longitudinal. When the beam was accelerated from injection Gγ = 46.5 to Gγ = 48 the spin flipped sign as expected and polarization was preserved. At Gγ = 48 without the snake, no polarization was observed since several spin resonances were crossed. Eventually polarized beam was accelerated to Gγ = 55.7 (29.1 GeV). In the next proton running period we plan to run with two full helical snakes in each ring and collide both transversely and longitudinally polarized protons at an energy around 100 GeV per beam.

UR - https://www.scopus.com/pages/publications/0035570973

M3 - Paper

AN - SCOPUS:0035570973

SP - 24

EP - 26

T2 - 2001 Particle Accelerator Conference

Y2 - 18 June 2001 through 22 June 2001

ER -

Commissioning and future plans for polarized protons in RHIC

Abstract

Conference

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