HB2018 - List of Keywords (booster)

Paper	Title	Other Keywords	Page
WEP2PO001	Upgraded Transverse Feedback for the CERN PS Booster	betatron, feedback, kicker, hardware	256
	A. Blas, G. Kotzian CERN, Geneva, Switzerland
	A new transverse feedback system is being used for the 4 rings of the CERN Proton Synchrotron Booster (PSB). In addition to transverse instabilities mitigation - within the range of 100 kHz to 100 MHz - the system allows for controlled beam emittance blow-up, machine tune measurement and other optic studies. The system was upgraded in order to multiply by 8 its power (800 W instead of 100 W on each of the 4 kicker electrodes) and in order for its electronic core to employ a digital processing. The transverse feedback adapts automatically to a factor 3 change in the beam revolution period and to any change of the machine tune. It includes an excitation source that combines up to 9 selectable harmonics of the revolution frequency with a selectable amplitude for each. The excitation may be dipolar or quadrupolar. Future possible upgrades will be presented including a setup to tackle half-integer tune values and a digital processing using a fixed clock frequency instead of the revolution frequency clock.
	Poster WEP2PO001 [1.794 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-WEP2PO001
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEP2PO010	Fermilab - The Proton Improvement Plan (PIP)	proton, linac, cavity, operation	287
	F.G. Garcia, S. Chaurize, C.C. Drennan, K. E. Gollwitzer, V.A. Lebedev, W. Pellico, J. Reid, C.-Y. Tan, R.M. Zwaska Fermilab, Batavia, Illinois, USA
	The Fermilab Proton Source is composed of three machines: an injector line, a normal conducting Linac and a Booster synchrotron. The proton improvement plan was proposed in 2012 to address the necessary accelerator upgrades and hardware modification to allow an increase in proton throughput, while maintaining acceptable activation levels, ensuring viable operation of the proton source to sustain the laboratory HEP program. A summary of work performed and respective results will be presented.
	Poster WEP2PO010 [1.699 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-WEP2PO010
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THP1WC01	MEBT Laser Notcher (Chopper) for Booster Loss Reduction	laser, linac, injection, cavity	416
	D.E. Johnson, C.M. Bhat, S. Chaurize, K.L. Duel, T.R. Johnson, P.R. Karns, W. Pellico, B.A. Schupbach, K. Seiya, D. Slimmer Fermilab, Batavia, Illinois, USA
	Funding: Operated by Fermi Research Alliance, LLC under contract No. DE-AC02-07CH11359 with the United States Department of Energy. The Fermilab Booster, which utilizes multi-turn injection and adiabatic capture, the extraction gap (aka "notch") has been created in the ring at injection energy using fast kickers which deposit the beam in a shielded absorber within the accelerator tunnel. This process, while effective at creating the extraction notch, was responsible for a significant fraction of the total beam power loss in the Booster tunnel and created significant residual activation within the Booster tunnel in the absorber region and beyond. With increasing beam demand from the Experimental Program, the Fermilab Proton Improvement Plan (PIP) initiated an R&D project to build a laser system to create the notch within a linac beam pulse at 750 keV, where activation in not an issue. This talk will discuss moving from R&D to an operational laser system and its integration into the accelerator complex. We will also cover the loss reduction in the Booster, increased efficiency, and increased proton throughput. We will touch on other potential applications for this bunch-by-bunch neutralization approach.
	Slides THP1WC01 [26.294 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-THP1WC01
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THP1WC03	Design of 162-MHz CW Bunch-by-Bunch Chopper and Prototype Testing Results	kicker, injection, linac, ECR	428
	A.V. Shemyakin, C.M. Baffes, J.-P. Carneiro, B.E. Chase, A.Z. Chen, J. Einstein-Curtis, D. Frolov, B.M. Hanna, V.A. Lebedev, L.R. Prost, G.W. Saewert, A. Saini, D. Sun Fermilab, Batavia, Illinois, USA C.J. Richard NSCL, East Lansing, Michigan, USA D. Sharma RRCAT, Indore (M.P.), India
	Funding: This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics The PIP-II program of upgrades proposed for the Fermilab accelerator complex, is centered around a 800 MeV, 2 mA CW SRF linac. A unique feature of the PIP-II linac is the capability to form a flexible bunch structure by removing a pre-programmed set of bunches from a long-pulse or CW 162.5 MHz train, coming from the RFQ, within the 2.1-MeV Medium Energy Beam Transport (MEBT) section. The MEBT chopping system consists of two travelling-wave kickers working in sync followed by a beam absorber. The prototype components of the chopping system, two design variants of the kickers and a 1/4-size absorber, have been installed in the PIP-II Injector Test (PIP2IT) accelerator and successfully tested with beam of up to 5 mA. In part, one of the kickers demonstrated a capability to create an aperiodic pulse sequence suitable for synchronous injection into the Booster while operating at 500 V and average switching frequency of 44 MHz during 0.55 ms bursts at 20 Hz. This report presents the design of the PIP-II MEBT chopping system and results of prototypes testing at PIP2IT.
	Slides THP1WC03 [4.615 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-THP1WC03
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THP2WC01	The FNAL Booster Second Harmonic RF Cavity	cavity, solenoid, impedance, cathode	434
	R.L. Madrak, J.E. Dey, K.L. Duel, M.R. Kufer, J. Kuharik, A.V. Makarov, R.D. Padilla, W. Pellico, J. Reid, G.V. Romanov, M. Slabaugh, D. Sun, C.-Y. Tan, I. Terechkine Fermilab, Batavia, Illinois, USA
	Funding: Operated by Fermi Research Alliance, LLC under Contract No. DEAC02- 07CH11359 with the United States Department of Energy. A second harmonic RF cavity which uses perpendicularly biased garnet for frequency tuning is currently being constructed for use in the Fermilab Booster. The cavity will operate at twice the fundamental RF frequency, from ~76 - 10⁶ MHz, and will be turned on only during injection, and transition or extraction. Its main purpose is to reduce beam loss as required by Fermilab's Proton Improvement Plan (PIP). After three years of optimization and study, the cavity design has been finalized and all constituent parts have been received. We discuss the design aspects of the cavity and its associated systems, component testing, and status of the cavity construction.
	Slides THP2WC01 [16.734 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-THP2WC01
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

WEP2PO001

Upgraded Transverse Feedback for the CERN PS Booster

betatron, feedback, kicker, hardware

256

A. Blas, G. Kotzian
CERN, Geneva, Switzerland

A new transverse feedback system is being used for the 4 rings of the CERN Proton Synchrotron Booster (PSB). In addition to transverse instabilities mitigation - within the range of 100 kHz to 100 MHz - the system allows for controlled beam emittance blow-up, machine tune measurement and other optic studies. The system was upgraded in order to multiply by 8 its power (800 W instead of 100 W on each of the 4 kicker electrodes) and in order for its electronic core to employ a digital processing. The transverse feedback adapts automatically to a factor 3 change in the beam revolution period and to any change of the machine tune. It includes an excitation source that combines up to 9 selectable harmonics of the revolution frequency with a selectable amplitude for each. The excitation may be dipolar or quadrupolar. Future possible upgrades will be presented including a setup to tackle half-integer tune values and a digital processing using a fixed clock frequency instead of the revolution frequency clock.

Poster WEP2PO001 [1.794 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-WEP2PO001

Export •

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

WEP2PO010

Fermilab - The Proton Improvement Plan (PIP)

proton, linac, cavity, operation

287

F.G. Garcia, S. Chaurize, C.C. Drennan, K. E. Gollwitzer, V.A. Lebedev, W. Pellico, J. Reid, C.-Y. Tan, R.M. Zwaska
Fermilab, Batavia, Illinois, USA

The Fermilab Proton Source is composed of three machines: an injector line, a normal conducting Linac and a Booster synchrotron. The proton improvement plan was proposed in 2012 to address the necessary accelerator upgrades and hardware modification to allow an increase in proton throughput, while maintaining acceptable activation levels, ensuring viable operation of the proton source to sustain the laboratory HEP program. A summary of work performed and respective results will be presented.

Poster WEP2PO010 [1.699 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-WEP2PO010

Export •

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

THP1WC01

MEBT Laser Notcher (Chopper) for Booster Loss Reduction

laser, linac, injection, cavity

416

D.E. Johnson, C.M. Bhat, S. Chaurize, K.L. Duel, T.R. Johnson, P.R. Karns, W. Pellico, B.A. Schupbach, K. Seiya, D. Slimmer
Fermilab, Batavia, Illinois, USA

Funding: Operated by Fermi Research Alliance, LLC under contract No. DE-AC02-07CH11359 with the United States Department of Energy.
The Fermilab Booster, which utilizes multi-turn injection and adiabatic capture, the extraction gap (aka "notch") has been created in the ring at injection energy using fast kickers which deposit the beam in a shielded absorber within the accelerator tunnel. This process, while effective at creating the extraction notch, was responsible for a significant fraction of the total beam power loss in the Booster tunnel and created significant residual activation within the Booster tunnel in the absorber region and beyond. With increasing beam demand from the Experimental Program, the Fermilab Proton Improvement Plan (PIP) initiated an R&D project to build a laser system to create the notch within a linac beam pulse at 750 keV, where activation in not an issue. This talk will discuss moving from R&D to an operational laser system and its integration into the accelerator complex. We will also cover the loss reduction in the Booster, increased efficiency, and increased proton throughput. We will touch on other potential applications for this bunch-by-bunch neutralization approach.

Slides THP1WC01 [26.294 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-THP1WC01

Export •

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

THP1WC03

Design of 162-MHz CW Bunch-by-Bunch Chopper and Prototype Testing Results

kicker, injection, linac, ECR

428

A.V. Shemyakin, C.M. Baffes, J.-P. Carneiro, B.E. Chase, A.Z. Chen, J. Einstein-Curtis, D. Frolov, B.M. Hanna, V.A. Lebedev, L.R. Prost, G.W. Saewert, A. Saini, D. Sun
Fermilab, Batavia, Illinois, USA
C.J. Richard
NSCL, East Lansing, Michigan, USA
D. Sharma
RRCAT, Indore (M.P.), India

Funding: This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics
The PIP-II program of upgrades proposed for the Fermilab accelerator complex, is centered around a 800 MeV, 2 mA CW SRF linac. A unique feature of the PIP-II linac is the capability to form a flexible bunch structure by removing a pre-programmed set of bunches from a long-pulse or CW 162.5 MHz train, coming from the RFQ, within the 2.1-MeV Medium Energy Beam Transport (MEBT) section. The MEBT chopping system consists of two travelling-wave kickers working in sync followed by a beam absorber. The prototype components of the chopping system, two design variants of the kickers and a 1/4-size absorber, have been installed in the PIP-II Injector Test (PIP2IT) accelerator and successfully tested with beam of up to 5 mA. In part, one of the kickers demonstrated a capability to create an aperiodic pulse sequence suitable for synchronous injection into the Booster while operating at 500 V and average switching frequency of 44 MHz during 0.55 ms bursts at 20 Hz. This report presents the design of the PIP-II MEBT chopping system and results of prototypes testing at PIP2IT.

Slides THP1WC03 [4.615 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-THP1WC03

Export •

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

THP2WC01

The FNAL Booster Second Harmonic RF Cavity

cavity, solenoid, impedance, cathode

434

R.L. Madrak, J.E. Dey, K.L. Duel, M.R. Kufer, J. Kuharik, A.V. Makarov, R.D. Padilla, W. Pellico, J. Reid, G.V. Romanov, M. Slabaugh, D. Sun, C.-Y. Tan, I. Terechkine
Fermilab, Batavia, Illinois, USA

Funding: Operated by Fermi Research Alliance, LLC under Contract No. DEAC02- 07CH11359 with the United States Department of Energy.
A second harmonic RF cavity which uses perpendicularly biased garnet for frequency tuning is currently being constructed for use in the Fermilab Booster. The cavity will operate at twice the fundamental RF frequency, from ~76 - 10⁶ MHz, and will be turned on only during injection, and transition or extraction. Its main purpose is to reduce beam loss as required by Fermilab's Proton Improvement Plan (PIP). After three years of optimization and study, the cavity design has been finalized and all constituent parts have been received. We discuss the design aspects of the cavity and its associated systems, component testing, and status of the cavity construction.

Slides THP2WC01 [16.734 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-THP2WC01

Export •

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