IBIC2016 - List of Keywords (alignment)

Paper	Title	Other Keywords	Page
MOPG12	A Wire-Based Methodology to Analyse the Nanometric Resolution of an RF Cavity BPM	cavity, experiment, software, dipole	63
	S. Zorzetti, K. Artoos, F.N. Morel, P. Novotny, D. Tshilumba, M. Wendt CERN, Geneva, Switzerland L. Fanucci Università di Pisa, Pisa, Italy
	Funding: The PACMAN project is funded by the European Union's Seventh Framework Programme for research, technological development and demonstration under grant agreement no. 606839 Resonant Cavity Beam Position Monitors (RF-BPMs) are diagnostic instruments capable of achieving beam position resolutions down to the nanometre scale. To date, their nanometric resolution capabilities have been predicted by simulation and verified through beam-based measurements with particle beams. In the frame of the PACMAN project at CERN, an innovative methodology has been developed to directly observe signal variations corresponding to nanometric displacements of the BPM cavity with respect to a conductive stretched wire. The cavity BPM of this R&D study operates at the TM110 dipole mode frequency of 15GHz. The concepts and details of the RF stretched wire BPM test-bench to achieve the best resolution results are presented, along with the required control hardware and software.
	Poster MOPG12 [1.692 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG12
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MOPG68	Development and Commissioning of the Next Generation X-ray Beam Size Monitor in CESR	detector, operation, vacuum, storage-ring	229
	N.T. Rider, S.T. Barrett, M.G. Billing, J.V. Conway, B.K. Heltsley, A.A. Mikhailichenko, D.P. Peterson, D. L. Rubin, J.P. Shanks, S. Wang Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
	Funding: Work supported by NSF grant PHY-0734867, PHY-1002467 and DOE grant DE-FC02-08ER41538, DE-SC0006505 The CESR Test Accelerator (CesrTA) program targets the study of beam physics issues relevant to linear collider damping rings and other low emittance storage rings. This endeavor requires new instrumentation to study the beam dynamics along trains of ultra-low emittance bunches. A key element of the program has been the design, commissioning and operation of an x-ray beam size monitor capable, on a turn by turn basis, of collecting single pass measurements of each individual bunch in a train over many thousands of turns. The x-ray beam size monitor development has matured to include the design of a new instrument which has been permanently integrated into the storage ring. A new beam line has been designed and constructed which allows for the extraction of x-rays from the positron beam using a newly developed electro magnet pair. This new instrument utilizes custom, high bandwidth amplifiers and digitization hardware and firmware to collect signals from a linear InGaAs diode array. This paper reports on the development of this new instrument and its integration into storage ring operation including vacuum component design, electromagnet design, electronics and capabilities.
	Poster MOPG68 [4.624 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG68
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TUPG06	Development Status of a Stable BPM System for the SPring-8 Upgrade	electronics, radiation, photon, quadrupole	322
	H. Maesaka RIKEN SPring-8 Center, Sayo-cho, Sayo-gun, Hyogo, Japan H. Dewa, T. Fujita, M. Masaki, S. Takano JASRI, Hyogo, Japan
	A stable and precise BPM system is necessary for the low-emittance upgrade of SPring-8. Key requirements for the BPM system are: 1) long-term stability to maintain the photon beam direction of the beamline well within the intrinsic photon divergence, 2) single-pass resolution better than 100 μm rms for a 100 pC injected bunch for first turn steering in the beam commissioning, and 3) accuracy better than 100 μm rms with respect to aligned quadrupole and sextupole magnet centers to achieve the design performance of the upgraded ring. To realize the demanded stability, the BPM drift should be reduced to 1 μm level. Therefore, we have been pursuing designs to suppress the thermal deformation of a BPM head and its support and to minimize the drifts of BPM electronics and coaxial cables. The investigation results on causes of drifts of the present SPring-8 BPM system are reflected to the design of the new BPM system. A button-type BPM head has been developed, which can generate sufficient signal to satisfy the required single-pass resolution. We have also been studying the strategies of the alignment, position survey and electric center calibration of the BPM head better than 100 μm. M. Masaki et al., in this conference.
	Poster TUPG06 [5.250 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG06
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TUPG31	The Alignment of Convergent Beamlines at a New Triple Ion Beam Facility	ion, target, experiment, laser	403
	O.F. Toader, T. Kubley, F.U. Naab, E.E. Uberseder NERS-UM, Ann Arbor, Michigan, USA
	The Michigan Ion Beam Laboratory (MIBL) at the University of Michigan in Ann Arbor Michigan, USA, has recently upgraded its capabilities from a two accelerator to a three accelerator operation mode. The laboratory, equipped with a 3 MV Tandem, a 400 kV Ion Implanter and a 1.7 MV Tandem has also increased the number of available beamlines from three to seven with two more in the planning stages. The MIBL staff had to overcome multiple challenges during the physical alignment process of the accelerators, beamlines and experimental end-stages. Not only the position of the accelerators changed, but the target chambers were moved into a different room behind a 1 m thick concrete wall. At the same time, one beamline from each accelerator had to converge and connect to a single chamber at a precise angle. This setup allows researchers to conduct simultaneous dual and triple ion beam experiments. This work presents the details of building this new setup, with focus on the alignment process.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG31
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TUPG80	Design and Implementation of Non-Invasive Profile Monitors for the ESS LEBT	proton, vacuum, photon, controls	551
	C.A. Thomas, T. Galh, T.J. Grandsaert, H. Kocevar, J.H. Lee, A. Serrano, T.J. Shea ESS, Lund, Sweden
	We present in this paper the design and implementation of the Non-invasive Profile Monitors for the ESS LEBT. Non-invasive Profile Monitors at ESS measure the transverse profile of the high power proton beam. As such the NPM for the LEBT is not different from NPM designed for other sections of the ESS linac, however, it received the requirement to measure the position of the beam accurately with respect to the centre of the vacuum chamber, representing the reference orbit. This particular requirement led to implement a specific design to provide absolute position measurement to the system. In the following we will first describe the design and the associated functionalities, and then we will present the performance measurements of this built system, fully integrated into the control system. Finally we will discuss the performance in comparison to the initial requirements.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG80
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WEPG57	Single-Shot THz Spectrometer for Bunch Length Measurements	detector, radiation, electron, diagnostics	782
	S.V. Kutsaev, A.Y. Murokh, M. Ruelas, H.L. To RadiaBeam Systems, Santa Monica, California, USA V. Goncharik Logicware Inc, New York, USA
	Funding: This work was supported by the U.S. Department of Energy, Office of High Energy Physics, under contract DE-SC0013684 We present a new diagnostics instrument designed to measure bunch length in RF particle accelerators. Typically, scanning-type Michelson or Martin-Puplett interferometers are used to measure the coherent radiation from a short bunch. However, they require averaging over several shots over several minutes, thus being able to report only the average bunch length. We propose to measure the emitted coherent spectrum of a short bunch emission that contains the same spectral information as the bunch shape by means of single-shot spectrometry. In this paper we present design considerations, and first experimental results obtained at FACET for the instrument that allows shot-to-shot measurement of the emitted spectrum.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG57
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WEPG78	BPM Based Optics Correction of the Solaris 1.5 GeV Storage Ring	storage-ring, closed-orbit, optics, simulation	836
	A. Kisiel, P.B. Borowiec, P.P. Goryl, M.B. Jaglarz, M.P. Kopeć, A.M. Marendziak, S. Piela, P.S. Sagalo, M.J. Stankiewicz, A.I. Wawrzyniak Solaris, Kraków, Poland
	The Solaris is a novel approach for the third generation synchrotron light sources. The machine consists of 600 MeV linear injector and 1.5 GeV storage ring based on 12 compact Double Bend Achromat (DBA) magnets designed in MAX-IV Laboratory in Sweden. After the commissioning phase of the Solaris storage ring the optimization phase has been started along with the commissioning of the first beamline. An essential part of the beam diagnostics and instrumentation system in the storage ring are Beam Position Monitors (BPMs) based on 36 quarter-wave button BPMs spread along the ring. Proper calibration allowed to measure and correct several beam parameters like closed orbit, tune, chromaticity, dispersion and orbit response matrix. The results of the latest machine optimization including the orbit correction, beam-based alignment and BPM phase advance will be presented.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG78
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOPG12

A Wire-Based Methodology to Analyse the Nanometric Resolution of an RF Cavity BPM

cavity, experiment, software, dipole

63

S. Zorzetti, K. Artoos, F.N. Morel, P. Novotny, D. Tshilumba, M. Wendt
CERN, Geneva, Switzerland
L. Fanucci
Università di Pisa, Pisa, Italy

Funding: The PACMAN project is funded by the European Union's Seventh Framework Programme for research, technological development and demonstration under grant agreement no. 606839
Resonant Cavity Beam Position Monitors (RF-BPMs) are diagnostic instruments capable of achieving beam position resolutions down to the nanometre scale. To date, their nanometric resolution capabilities have been predicted by simulation and verified through beam-based measurements with particle beams. In the frame of the PACMAN project at CERN, an innovative methodology has been developed to directly observe signal variations corresponding to nanometric displacements of the BPM cavity with respect to a conductive stretched wire. The cavity BPM of this R&D study operates at the TM110 dipole mode frequency of 15GHz. The concepts and details of the RF stretched wire BPM test-bench to achieve the best resolution results are presented, along with the required control hardware and software.

Poster MOPG12 [1.692 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG12

Export •

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

MOPG68

Development and Commissioning of the Next Generation X-ray Beam Size Monitor in CESR

detector, operation, vacuum, storage-ring

229

N.T. Rider, S.T. Barrett, M.G. Billing, J.V. Conway, B.K. Heltsley, A.A. Mikhailichenko, D.P. Peterson, D. L. Rubin, J.P. Shanks, S. Wang
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA

Funding: Work supported by NSF grant PHY-0734867, PHY-1002467 and DOE grant DE-FC02-08ER41538, DE-SC0006505
The CESR Test Accelerator (CesrTA) program targets the study of beam physics issues relevant to linear collider damping rings and other low emittance storage rings. This endeavor requires new instrumentation to study the beam dynamics along trains of ultra-low emittance bunches. A key element of the program has been the design, commissioning and operation of an x-ray beam size monitor capable, on a turn by turn basis, of collecting single pass measurements of each individual bunch in a train over many thousands of turns. The x-ray beam size monitor development has matured to include the design of a new instrument which has been permanently integrated into the storage ring. A new beam line has been designed and constructed which allows for the extraction of x-rays from the positron beam using a newly developed electro magnet pair. This new instrument utilizes custom, high bandwidth amplifiers and digitization hardware and firmware to collect signals from a linear InGaAs diode array. This paper reports on the development of this new instrument and its integration into storage ring operation including vacuum component design, electromagnet design, electronics and capabilities.

Poster MOPG68 [4.624 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG68

Export •

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

TUPG06

Development Status of a Stable BPM System for the SPring-8 Upgrade

electronics, radiation, photon, quadrupole

322

H. Maesaka
RIKEN SPring-8 Center, Sayo-cho, Sayo-gun, Hyogo, Japan
H. Dewa, T. Fujita, M. Masaki, S. Takano
JASRI, Hyogo, Japan

A stable and precise BPM system is necessary for the low-emittance upgrade of SPring-8. Key requirements for the BPM system are: 1) long-term stability to maintain the photon beam direction of the beamline well within the intrinsic photon divergence, 2) single-pass resolution better than 100 μm rms for a 100 pC injected bunch for first turn steering in the beam commissioning, and 3) accuracy better than 100 μm rms with respect to aligned quadrupole and sextupole magnet centers to achieve the design performance of the upgraded ring. To realize the demanded stability, the BPM drift should be reduced to 1 μm level. Therefore, we have been pursuing designs to suppress the thermal deformation of a BPM head and its support and to minimize the drifts of BPM electronics and coaxial cables. The investigation results on causes of drifts of the present SPring-8 BPM system are reflected to the design of the new BPM system. A button-type BPM head has been developed*, which can generate sufficient signal to satisfy the required single-pass resolution. We have also been studying the strategies of the alignment, position survey and electric center calibration of the BPM head better than 100 μm.
* M. Masaki et al., in this conference.

Poster TUPG06 [5.250 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG06

Export •

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

TUPG31

The Alignment of Convergent Beamlines at a New Triple Ion Beam Facility

ion, target, experiment, laser

403

O.F. Toader, T. Kubley, F.U. Naab, E.E. Uberseder
NERS-UM, Ann Arbor, Michigan, USA

The Michigan Ion Beam Laboratory (MIBL) at the University of Michigan in Ann Arbor Michigan, USA, has recently upgraded its capabilities from a two accelerator to a three accelerator operation mode. The laboratory, equipped with a 3 MV Tandem, a 400 kV Ion Implanter and a 1.7 MV Tandem has also increased the number of available beamlines from three to seven with two more in the planning stages. The MIBL staff had to overcome multiple challenges during the physical alignment process of the accelerators, beamlines and experimental end-stages. Not only the position of the accelerators changed, but the target chambers were moved into a different room behind a 1 m thick concrete wall. At the same time, one beamline from each accelerator had to converge and connect to a single chamber at a precise angle. This setup allows researchers to conduct simultaneous dual and triple ion beam experiments. This work presents the details of building this new setup, with focus on the alignment process.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG31

Export •

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

TUPG80

Design and Implementation of Non-Invasive Profile Monitors for the ESS LEBT

proton, vacuum, photon, controls

551

C.A. Thomas, T. Galh, T.J. Grandsaert, H. Kocevar, J.H. Lee, A. Serrano, T.J. Shea
ESS, Lund, Sweden

We present in this paper the design and implementation of the Non-invasive Profile Monitors for the ESS LEBT. Non-invasive Profile Monitors at ESS measure the transverse profile of the high power proton beam. As such the NPM for the LEBT is not different from NPM designed for other sections of the ESS linac, however, it received the requirement to measure the position of the beam accurately with respect to the centre of the vacuum chamber, representing the reference orbit. This particular requirement led to implement a specific design to provide absolute position measurement to the system. In the following we will first describe the design and the associated functionalities, and then we will present the performance measurements of this built system, fully integrated into the control system. Finally we will discuss the performance in comparison to the initial requirements.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG80

Export •

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

WEPG57

Single-Shot THz Spectrometer for Bunch Length Measurements

detector, radiation, electron, diagnostics

782

S.V. Kutsaev, A.Y. Murokh, M. Ruelas, H.L. To
RadiaBeam Systems, Santa Monica, California, USA
V. Goncharik
Logicware Inc, New York, USA

Funding: This work was supported by the U.S. Department of Energy, Office of High Energy Physics, under contract DE-SC0013684
We present a new diagnostics instrument designed to measure bunch length in RF particle accelerators. Typically, scanning-type Michelson or Martin-Puplett interferometers are used to measure the coherent radiation from a short bunch. However, they require averaging over several shots over several minutes, thus being able to report only the average bunch length. We propose to measure the emitted coherent spectrum of a short bunch emission that contains the same spectral information as the bunch shape by means of single-shot spectrometry. In this paper we present design considerations, and first experimental results obtained at FACET for the instrument that allows shot-to-shot measurement of the emitted spectrum.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG57

Export •

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

WEPG78

BPM Based Optics Correction of the Solaris 1.5 GeV Storage Ring

storage-ring, closed-orbit, optics, simulation

836

A. Kisiel, P.B. Borowiec, P.P. Goryl, M.B. Jaglarz, M.P. Kopeć, A.M. Marendziak, S. Piela, P.S. Sagalo, M.J. Stankiewicz, A.I. Wawrzyniak
Solaris, Kraków, Poland

The Solaris is a novel approach for the third generation synchrotron light sources. The machine consists of 600 MeV linear injector and 1.5 GeV storage ring based on 12 compact Double Bend Achromat (DBA) magnets designed in MAX-IV Laboratory in Sweden. After the commissioning phase of the Solaris storage ring the optimization phase has been started along with the commissioning of the first beamline. An essential part of the beam diagnostics and instrumentation system in the storage ring are Beam Position Monitors (BPMs) based on 36 quarter-wave button BPMs spread along the ring. Proper calibration allowed to measure and correct several beam parameters like closed orbit, tune, chromaticity, dispersion and orbit response matrix. The results of the latest machine optimization including the orbit correction, beam-based alignment and BPM phase advance will be presented.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG78

Export •

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