IPAC2017 - List of Authors (Pellico, W.)

Paper	Title	Page
TUPIK116	Injection Bucket Jitter Compensation Using Phase Lock System at Fermilab Booster	1999
	K. Seiya, S. Chaurize, C.C. Drennan, W. Pellico Fermilab, Batavia, Illinois, USA
	Phase synchronization between Booster extraction and Recycler injection has been done with the phase lock loop at Booster extraction. The phase Lock Loop control rf phase by changing radial position at extraction and it causes ± one bucket error, not phase error at Recycler injection. By switching a mode of operation for the phase lock loop by measuring the extraction gap position, the jitter was eliminated. The beam loss at the Recycler injection was reduced by 20%. Beam studies and the phase lock system will be discussed in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK116
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TUPIK117	Optimization of the Booster Notch System at Fermilab	2002
	S. Chaurize, C.C. Jensen, W. Pellico, I.L. Rakhno, K. Seiya, V.I. Sidorov, R. Tesarek, I.S. Tropin Fermilab, Batavia, Illinois, USA
	The Booster Beam Notch is a beam gap needed to allow extraction kickers to reach full field strength for a single turn extraction scheme. The Notch is created at injection energy by kicking 3 out of the 84 bunches to a dedicated absorber. The kicker voltage, pulse length and geometry of the absorber must be optimized to minimize the beam loss due to the notch creation. Beam studies, simulation and implementation as well as the optimization and improvement of the notch system will be discussed in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK117
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THPIK115	Status of the Perpendicular Biased 2nd Harmonic Cavity for the Fermilab Booster	4366
	C.-Y. Tan, J.E. Dey, K.L. Duel, J. Kuharik, R.L. Madrak, A.V. Makarov, W. Pellico, J. Reid, G.V. Romanov, M. Slabaugh, D. Sun, I. Terechkine Fermilab, Batavia, Illinois, USA
	Funding: Operated by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States Department of Energy. This is a status report on the 2nd harmonic cavity for the Fermilab Booster as part of the Proton Improvement Plan (PIP) for increasing beam transmission efficiency, and thus reducing losses. A set of tuner rings has been procured and is undergoing quality control tests. The Y567 tube for driving the cavity has been successfully tested at both injection and extraction frequencies. A cooling scheme for the tuner and cavity has been developed after a thorough thermal analysis of the system. RF windows have been procured and substantial progress has been made on the mechanical designs of the cavity and the bias solenoid. The goal is to have a prototype cavity ready for testing by the end of 2017.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK115
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THPIK116	Static Magnetization Properties of AL800 Garnet Material	4370
	J. Kuharik, R.L. Madrak, A.V. Makarov, W. Pellico, D. Sun, C.-Y. Tan, I. Terechkine Fermilab, Batavia, Illinois, USA
	A second harmonic tunable RF cavity is being developed for the Fermilab Booster. This device, which promises reduction of the particle beam loss at the injection, transition, and extraction stages, employs perpendicularly biased garnet material for the frequency tuning. The required range of the tuning is significantly wider than in previously built and tested tunable RF devices. As a result, the magnetic field in the garnet becomes fairly close to the gyromagnetic resonance line at the lower end of the frequency range. The chosen design concept of a tuner for the cavity cannot ensure uniform magnetic field in the garnet material; thus it is important to know the static magnetic properties of the material to avoid significant increase in the local RF loss power density. This report summarizes studies performed at Fermilab to understand variations in the magnetic properties of the AL-800 garnet material used to build the tuner of the cavity.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK116
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Paper

Title

Page

Injection Bucket Jitter Compensation Using Phase Lock System at Fermilab Booster

1999

K. Seiya, S. Chaurize, C.C. Drennan, W. Pellico
Fermilab, Batavia, Illinois, USA

Phase synchronization between Booster extraction and Recycler injection has been done with the phase lock loop at Booster extraction. The phase Lock Loop control rf phase by changing radial position at extraction and it causes ± one bucket error, not phase error at Recycler injection. By switching a mode of operation for the phase lock loop by measuring the extraction gap position, the jitter was eliminated. The beam loss at the Recycler injection was reduced by 20%. Beam studies and the phase lock system will be discussed in this paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK116

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

TUPIK117

Optimization of the Booster Notch System at Fermilab

2002

S. Chaurize, C.C. Jensen, W. Pellico, I.L. Rakhno, K. Seiya, V.I. Sidorov, R. Tesarek, I.S. Tropin
Fermilab, Batavia, Illinois, USA

The Booster Beam Notch is a beam gap needed to allow extraction kickers to reach full field strength for a single turn extraction scheme. The Notch is created at injection energy by kicking 3 out of the 84 bunches to a dedicated absorber. The kicker voltage, pulse length and geometry of the absorber must be optimized to minimize the beam loss due to the notch creation. Beam studies, simulation and implementation as well as the optimization and improvement of the notch system will be discussed in this paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK117

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

THPIK115

Status of the Perpendicular Biased 2nd Harmonic Cavity for the Fermilab Booster

4366

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

Funding: Operated by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States Department of Energy.
This is a status report on the 2nd harmonic cavity for the Fermilab Booster as part of the Proton Improvement Plan (PIP) for increasing beam transmission efficiency, and thus reducing losses. A set of tuner rings has been procured and is undergoing quality control tests. The Y567 tube for driving the cavity has been successfully tested at both injection and extraction frequencies. A cooling scheme for the tuner and cavity has been developed after a thorough thermal analysis of the system. RF windows have been procured and substantial progress has been made on the mechanical designs of the cavity and the bias solenoid. The goal is to have a prototype cavity ready for testing by the end of 2017.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK115

Export •

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

THPIK116

Static Magnetization Properties of AL800 Garnet Material

4370

J. Kuharik, R.L. Madrak, A.V. Makarov, W. Pellico, D. Sun, C.-Y. Tan, I. Terechkine
Fermilab, Batavia, Illinois, USA

A second harmonic tunable RF cavity is being developed for the Fermilab Booster. This device, which promises reduction of the particle beam loss at the injection, transition, and extraction stages, employs perpendicularly biased garnet material for the frequency tuning. The required range of the tuning is significantly wider than in previously built and tested tunable RF devices. As a result, the magnetic field in the garnet becomes fairly close to the gyromagnetic resonance line at the lower end of the frequency range. The chosen design concept of a tuner for the cavity cannot ensure uniform magnetic field in the garnet material; thus it is important to know the static magnetic properties of the material to avoid significant increase in the local RF loss power density. This report summarizes studies performed at Fermilab to understand variations in the magnetic properties of the AL-800 garnet material used to build the tuner of the cavity.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK116

Export •

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