HB2023 - List of Keywords (booster)

Paper	Title	Other Keywords	Page
WEC3I2	Mitigation of Space Charge Effects in RHIC and Its Injectors	space-charge, emittance, injection, polarization	264
	V. Schoefer, C.J. Gardner, K. Hock, H. Huang, K. Zeno BNL, Upton, New York, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy The RHIC collider physics program, in particular its polarized proton and low energy heavy ion components, present unique challenges for maintaining collider performance in the presence of space charge effects. Polarized beam performance is especially sensitive to emittance increases, since they decrease both the luminosity and polarization. Operation of the collider with gold beams at sub-injection energies (down to 3.85 GeV/n Au) with space charge tune shifts up to 0.1 required special care to optimize both the ion lifetime and its interaction with the electron-beam cooler. We describe the operational experience in these modes and some of the mitigation efforts.
	Slides WEC3I2 [10.503 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-HB2023-WEC3I2
About •	Received ※ 29 September 2023 — Revised ※ 08 October 2023 — Accepted ※ 10 October 2023 — Issued ※ 14 October 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEC4C1	Magnetic Alloy Loaded Cavities in J-PARC and CERN	cavity, synchrotron, proton, operation	316
	C. Ohmori KEK, Ibaraki, Japan M.M. Paoluzzi CERN, Meyrin, Switzerland
	Funding: This work was supported by JSPS KAKENHI Grant Number 19KK0078 and 18K11930. Magnetic Alloy loaded cavities have been used in seven synchrotrons in J-PARC and CERN. In this paper, we will review variety of the cavity technologies to satisfy the requirements for the beam acceleration, deceleration, manipulation and instability damping. This paper also contains improvements of cavity cores by magnetic annealing scheme, quality control of cores during production, the cooling methods of magnetic alloy cores: direct water cooling and indirect one using copper discs, control of cavity bandwidths from broad to narrow bands, and the ways to drive RF cavities by tube and rad-hard solid-state amplifiers.
	Slides WEC4C1 [3.371 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-HB2023-WEC4C1
About •	Received ※ 04 October 2023 — Revised ※ 07 October 2023 — Accepted ※ 10 October 2023 — Issued ※ 10 October 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THBP28	A Phase Trombone for the Fermilab PIP-II Beam Transfer Line	lattice, linac, injection, collimation	527
	M. Xiao, D.E. Johnson, J.-F. Ostiguy Fermilab, Batavia, Illinois, USA
	The PIP-II beam transfer line (BTL) transports the beam from the PIP-II Linac to the Booster synchrotron ring. A crucial aspect of the BTL design is the collimation system which play a vital role in removing large ampli-tude particles that may otherwise miss the horizontal and vertical edges of the foil at the point of injection into the Booster. To ensure the effectiveness of the collimators, simulations were conducted to determine optimal place-ment within the BTL. These simulations revealed that precise control of the accumulated phase advances be-tween the collimators and the foil is critical. To achieve fine-tuning of the phase advance, a phase trombone was incorporated within the BTL. This paper presents the design and implementation details of this phase trom-bone
	Poster THBP28 [0.798 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-HB2023-THBP28
About •	Received ※ 20 September 2023 — Revised ※ 05 October 2023 — Accepted ※ 11 October 2023 — Issued ※ 30 October 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THBP50	Fermilab Main Injector and Recycler Operations in the Megawatt Era	operation, proton, experiment, electron	607
	A.P. Schreckenberger Fermilab, Batavia, Illinois, USA
	Significant upgrades to Fermilab¿s accelerator complex have accompanied the development of LBNF and DUNE. These improvements will facilitate 1-MW operation of the NuMI beam for the first time this year through changes to the Recycler slip-stacking procedure and shortening of the Main Injector ramp time. The modifications to the Recycler slip-stacking and effort to reduce the Main Injector ramp time will be discussed. Additionally, details regarding further shortening of the ramp time and the impact on future accelerator operations are presented.
	Poster THBP50 [0.923 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-HB2023-THBP50
About •	Received ※ 25 September 2023 — Revised ※ 09 October 2023 — Accepted ※ 12 October 2023 — Issued ※ 12 October 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THBP55	Commissioning of NICA Injection Complex	injection, electron, acceleration, operation	618
	V.A. Lebedev, O.I. Brovko, A.V. Butenko, E.E. Donets, B.V. Golovenskiy, E.V. Gorbachev, S.A. Kostromin, K.A. Levterov, I.N. Meshkov, A.S. Sergeev, M.M. Shandov, A.O. Sidorin, V.L. Smirnov, E. Syresin, A. Tuzikov JINR, Dubna, Moscow Region, Russia I. Nikolaichuk, A.Yu. Ramsdorf JINR/VBLHEP, Dubna, Moscow region, Russia
	The Nuclotron-based Ion Collider fAcility (NICA) is under construction at JINR. The NICA project goal is to provide colliding beams for studies of collisions of heavy fully stripped ions and light p¿lairized ions. The NICA Collider includes two rings with 503 m circumference each and the injection complex. For the heavy ion mode, the injection complex consists of following accelerators: 3.2 MeV/u linac (HILAC), 600 MeV/u (A/Z=6) superconducting booster synchrotron (Booster) and main superconducting synchrotron (Nuclotron) with kinetic energy up to 3.9 GeV/u (A/Z=2.5). The injection complex has been under commissioning for more than 2 years. Its Run IV was carried from October 2022 to February of 2023. It was aimed on the injection complex preparation for the collider operations in the heavy ion mode. Additionally, the slowly extracted 3.9 GeV/u xenon beam was delivered to the BM&N experiment resulting in 250 million events in the detector. The paper discusses main results of the injection complex commissioning and plans for its further development. The beam commissioning of the collider is expected in the 2nd half of 2025.
DOI •	reference for this paper ※ doi:10.18429/JACoW-HB2023-THBP55
About •	Received ※ 26 September 2023 — Revised ※ 06 October 2023 — Accepted ※ 11 October 2023 — Issued ※ 17 October 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

WEC3I2

Mitigation of Space Charge Effects in RHIC and Its Injectors

space-charge, emittance, injection, polarization

264

V. Schoefer, C.J. Gardner, K. Hock, H. Huang, K. Zeno
BNL, Upton, New York, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy
The RHIC collider physics program, in particular its polarized proton and low energy heavy ion components, present unique challenges for maintaining collider performance in the presence of space charge effects. Polarized beam performance is especially sensitive to emittance increases, since they decrease both the luminosity and polarization. Operation of the collider with gold beams at sub-injection energies (down to 3.85 GeV/n Au) with space charge tune shifts up to 0.1 required special care to optimize both the ion lifetime and its interaction with the electron-beam cooler. We describe the operational experience in these modes and some of the mitigation efforts.

Slides WEC3I2 [10.503 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-HB2023-WEC3I2

About •

Received ※ 29 September 2023 — Revised ※ 08 October 2023 — Accepted ※ 10 October 2023 — Issued ※ 14 October 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEC4C1

Magnetic Alloy Loaded Cavities in J-PARC and CERN

cavity, synchrotron, proton, operation

316

C. Ohmori
KEK, Ibaraki, Japan
M.M. Paoluzzi
CERN, Meyrin, Switzerland

Funding: This work was supported by JSPS KAKENHI Grant Number 19KK0078 and 18K11930.
Magnetic Alloy loaded cavities have been used in seven synchrotrons in J-PARC and CERN. In this paper, we will review variety of the cavity technologies to satisfy the requirements for the beam acceleration, deceleration, manipulation and instability damping. This paper also contains improvements of cavity cores by magnetic annealing scheme, quality control of cores during production, the cooling methods of magnetic alloy cores: direct water cooling and indirect one using copper discs, control of cavity bandwidths from broad to narrow bands, and the ways to drive RF cavities by tube and rad-hard solid-state amplifiers.

Slides WEC4C1 [3.371 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-HB2023-WEC4C1

About •

Received ※ 04 October 2023 — Revised ※ 07 October 2023 — Accepted ※ 10 October 2023 — Issued ※ 10 October 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THBP28

A Phase Trombone for the Fermilab PIP-II Beam Transfer Line

lattice, linac, injection, collimation

527

M. Xiao, D.E. Johnson, J.-F. Ostiguy
Fermilab, Batavia, Illinois, USA

The PIP-II beam transfer line (BTL) transports the beam from the PIP-II Linac to the Booster synchrotron ring. A crucial aspect of the BTL design is the collimation system which play a vital role in removing large ampli-tude particles that may otherwise miss the horizontal and vertical edges of the foil at the point of injection into the Booster. To ensure the effectiveness of the collimators, simulations were conducted to determine optimal place-ment within the BTL. These simulations revealed that precise control of the accumulated phase advances be-tween the collimators and the foil is critical. To achieve fine-tuning of the phase advance, a phase trombone was incorporated within the BTL. This paper presents the design and implementation details of this phase trom-bone

Poster THBP28 [0.798 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-HB2023-THBP28

About •

Received ※ 20 September 2023 — Revised ※ 05 October 2023 — Accepted ※ 11 October 2023 — Issued ※ 30 October 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THBP50

Fermilab Main Injector and Recycler Operations in the Megawatt Era

operation, proton, experiment, electron

607

A.P. Schreckenberger
Fermilab, Batavia, Illinois, USA

Significant upgrades to Fermilab¿s accelerator complex have accompanied the development of LBNF and DUNE. These improvements will facilitate 1-MW operation of the NuMI beam for the first time this year through changes to the Recycler slip-stacking procedure and shortening of the Main Injector ramp time. The modifications to the Recycler slip-stacking and effort to reduce the Main Injector ramp time will be discussed. Additionally, details regarding further shortening of the ramp time and the impact on future accelerator operations are presented.

Poster THBP50 [0.923 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-HB2023-THBP50

About •

Received ※ 25 September 2023 — Revised ※ 09 October 2023 — Accepted ※ 12 October 2023 — Issued ※ 12 October 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THBP55

Commissioning of NICA Injection Complex

injection, electron, acceleration, operation

618

V.A. Lebedev, O.I. Brovko, A.V. Butenko, E.E. Donets, B.V. Golovenskiy, E.V. Gorbachev, S.A. Kostromin, K.A. Levterov, I.N. Meshkov, A.S. Sergeev, M.M. Shandov, A.O. Sidorin, V.L. Smirnov, E. Syresin, A. Tuzikov
JINR, Dubna, Moscow Region, Russia
I. Nikolaichuk, A.Yu. Ramsdorf
JINR/VBLHEP, Dubna, Moscow region, Russia

The Nuclotron-based Ion Collider fAcility (NICA) is under construction at JINR. The NICA project goal is to provide colliding beams for studies of collisions of heavy fully stripped ions and light p¿lairized ions. The NICA Collider includes two rings with 503 m circumference each and the injection complex. For the heavy ion mode, the injection complex consists of following accelerators: 3.2 MeV/u linac (HILAC), 600 MeV/u (A/Z=6) superconducting booster synchrotron (Booster) and main superconducting synchrotron (Nuclotron) with kinetic energy up to 3.9 GeV/u (A/Z=2.5). The injection complex has been under commissioning for more than 2 years. Its Run IV was carried from October 2022 to February of 2023. It was aimed on the injection complex preparation for the collider operations in the heavy ion mode. Additionally, the slowly extracted 3.9 GeV/u xenon beam was delivered to the BM&N experiment resulting in 250 million events in the detector. The paper discusses main results of the injection complex commissioning and plans for its further development. The beam commissioning of the collider is expected in the 2nd half of 2025.

DOI •

reference for this paper ※ doi:10.18429/JACoW-HB2023-THBP55

About •

Received ※ 26 September 2023 — Revised ※ 06 October 2023 — Accepted ※ 11 October 2023 — Issued ※ 17 October 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)