IBIC2016 - List of Authors (Iriso, U.)

Paper	Title	Page
MOCL01	FCUP Award
	K. Jordan JLab, Newport News, Virginia, USA U. Iriso ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	The Faraday Cup (FCUP) Award was born in 1989 during the first Beam Instrumentation Workshop (BIW) held at Brookhaven National Lab (USA). Since the merging of the American BIW and the European DIPAC conferences into the, now, International Beam Instrumentation Conference, IBIC, this prize is sponsored by the conference itself and it is the first time the Faraday Cup is awarded in this new model. During this presentation, the FCUP winner will be announced and he/she will present his/her novel work. More information can be found at: https://www.faraday-cup.com/
	Slides MOCL01 [0.732 MB]
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MOCL03	Speaker's Corner
	H. Schmickler CERN, Geneva, Switzerland U. Iriso ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain K. Wittenburg DESY, Hamburg, Germany
	Traditionally the IBIC accepts only contributions about beam instrumentation or beam diagnostics, which describe existing installations with beam measurements or other well settled subjects. In order to make room for new ideas or a description of unsolved problems the program committee has launched a small initiative called "speaker's corner", during which people will be invited to present shortly any sort of strange idea they have or report on unsolved problems, for which they need help in understanding. All contributions to this event will not be published in the proceedings.
	Slides MOCL03 [1.378 MB]
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MOPG22	Studies and Historical Analysis of ALBA Beam Loss Monitors	94
	A.A. Nosych, U. Iriso ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	During 5 years of operation in the 3 GeV storage ring of ALBA, the 124 beam loss monitors (BLM) have provided stable measurements of relative losses around the machine, with around 10% breakdown of units. We have analyzed these BLM failures and correlated the integrated received dose with any special conditions of each BLM location which might have led to their breakdown. We also show studies of beam losses in the insertion devices, with particular attention to the results in the multipole wiggler (MPW), where the vacuum chamber is (suspected to be) misaligned and high BLM counts are detected.
	Poster MOPG22 [16.015 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG22
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MOPG55	Streak Camera Calibration Using RF Switches	186
	U. Iriso, M. Alvarez, A.A. Nosych ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain A. Molas UAB, Barcelona, Spain
	The streak camera has been used to measure the bunch length since the ALBA storage ring commissioning in 2011. Previously, we developed an optical calibration system based on the Michelson interferometry. Similar to the work at the DLS, in this report we show the calibration kit based on the different electrical delays which can be used via rf switches. We compare both calibration systems and we show measurements of the longitudinal impedance obtained with the new calibration. L. Bobb, A. Morgan, and G. Rehm, "Streak Camera PSF optimisation and udal sweep calibration for sub-ps bunch length measurements", Proc. of IBIC2015 (Australia)
	Poster MOPG55 [0.848 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG55
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MOPG59	Time Correlated Single Photon Counting Using Different Photon Detectors	201
	L. Torino, U. Iriso ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	Time Correlated Single Photon Counting (TCSPC) is used in accelerators to measure the filling pattern and perform bunch purity measurements. The most used photon detectors are photomultipliers (PMTs), generally used to detect visible light; and Avalanche Photo-Diodes (APDs), which are often used to detect X-rays. At ALBA synchrotron light source, the TCSPC using a standard PMT has been developed and is currently in operation and further tests are performed using an APD. This work presents the experimental results using both detectors, and compares their performances.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG59
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MOPG73	Transverse Beam Size Diagnostics using Brownian Nanoparticles at ALBA	248
	M. Siano, B. Paroli, M.A.C. Potenza Universita' degli Studi di Milano & INFN, Milano, Italy A. Goldblatt, S. Mazzoni, G. Trad CERN, Geneva, Switzerland U. Iriso, A.A. Nosych, L. Torino ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	In this work we describe a novel beam diagnostic method based on coherence characterization of broad-spectrum bending magnet radiation through the Heterodyne Near Field Scattering (HNFS) technique. HNFS is a self-referencing technique based on the interference between the transmitted beam and the spherical waves scattered by each particle of a colloidal suspension. The resulting single-particle interferogram shows circular fringes modulated by the spatio-temporal Complex Coherence Factor (CCF) of the radiation. Superposition of a number of these patterns results in a stochastic speckle field, from which spatial and temporal coherence information of the source can be retrieved in near field conditions. Here we describe the basics of this technique, the experimental setup mounted along the hard X-ray pinhole at the ALBA synchrotron light source, and the possibility of transverse electron beam size retrieval from the spatial coherence function of the emitted dipole radiation. We also show preliminary results concerning power spectral density of visible synchrotron radiation as obtained from temporal coherence.
	Poster MOPG73 [1.804 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG73
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WEBL03	Beam Shape Reconstruction Using Synchrotron Radiation Interferometry	589
	L. Torino, U. Iriso ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	Synchrotron Radiation Interferometry (SRI) through a double-aperture system is a well known technique to measure the transverse beam size using visible light. In many machines the beam is tilted in the transverse plane, but the SRI technique only allows to directly measure the size of the projection of the beam shape along the axis connecting the two apertures. A method to fully reconstruct the beam in the transverse plane using SRI has been developed and successfully tested at the ALBA synchrotron light source. This report shows the full beam reconstruction technique and presents the results at ALBA. Moreover, we also discuss how this technique could improve the measurement of very small beam sizes, improving the resolution of standard SRI.
	Slides WEBL03 [20.443 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEBL03
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THBL03	Closing Remarks
	U. Iriso, F. Pérez ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	We announce of the upcoming IBICs, summarize the IBIC 2016 and close the conference.
	Slides THBL03 [11.443 MB]
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Paper

Title

Page

MOCL01

FCUP Award

K. Jordan
JLab, Newport News, Virginia, USA
U. Iriso
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

The Faraday Cup (FCUP) Award was born in 1989 during the first Beam Instrumentation Workshop (BIW) held at Brookhaven National Lab (USA). Since the merging of the American BIW and the European DIPAC conferences into the, now, International Beam Instrumentation Conference, IBIC, this prize is sponsored by the conference itself and it is the first time the Faraday Cup is awarded in this new model. During this presentation, the FCUP winner will be announced and he/she will present his/her novel work. More information can be found at: https://www.faraday-cup.com/

Slides MOCL01 [0.732 MB]

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MOCL03

Speaker's Corner

H. Schmickler
CERN, Geneva, Switzerland
U. Iriso
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
K. Wittenburg
DESY, Hamburg, Germany

Traditionally the IBIC accepts only contributions about beam instrumentation or beam diagnostics, which describe existing installations with beam measurements or other well settled subjects. In order to make room for new ideas or a description of unsolved problems the program committee has launched a small initiative called "speaker's corner", during which people will be invited to present shortly any sort of strange idea they have or report on unsolved problems, for which they need help in understanding. All contributions to this event will not be published in the proceedings.

Slides MOCL03 [1.378 MB]

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MOPG22

Studies and Historical Analysis of ALBA Beam Loss Monitors

94

A.A. Nosych, U. Iriso
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

During 5 years of operation in the 3 GeV storage ring of ALBA, the 124 beam loss monitors (BLM) have provided stable measurements of relative losses around the machine, with around 10% breakdown of units. We have analyzed these BLM failures and correlated the integrated received dose with any special conditions of each BLM location which might have led to their breakdown. We also show studies of beam losses in the insertion devices, with particular attention to the results in the multipole wiggler (MPW), where the vacuum chamber is (suspected to be) misaligned and high BLM counts are detected.

Poster MOPG22 [16.015 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG22

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MOPG55

Streak Camera Calibration Using RF Switches

186

U. Iriso, M. Alvarez, A.A. Nosych
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
A. Molas
UAB, Barcelona, Spain

The streak camera has been used to measure the bunch length since the ALBA storage ring commissioning in 2011. Previously, we developed an optical calibration system based on the Michelson interferometry. Similar to the work at the DLS*, in this report we show the calibration kit based on the different electrical delays which can be used via rf switches. We compare both calibration systems and we show measurements of the longitudinal impedance obtained with the new calibration.
*L. Bobb, A. Morgan, and G. Rehm, "Streak Camera PSF optimisation and udal sweep calibration for sub-ps bunch length measurements", Proc. of IBIC2015 (Australia)

Poster MOPG55 [0.848 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG55

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MOPG59

Time Correlated Single Photon Counting Using Different Photon Detectors

201

L. Torino, U. Iriso
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

Time Correlated Single Photon Counting (TCSPC) is used in accelerators to measure the filling pattern and perform bunch purity measurements. The most used photon detectors are photomultipliers (PMTs), generally used to detect visible light; and Avalanche Photo-Diodes (APDs), which are often used to detect X-rays. At ALBA synchrotron light source, the TCSPC using a standard PMT has been developed and is currently in operation and further tests are performed using an APD. This work presents the experimental results using both detectors, and compares their performances.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG59

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MOPG73

Transverse Beam Size Diagnostics using Brownian Nanoparticles at ALBA

248

M. Siano, B. Paroli, M.A.C. Potenza
Universita' degli Studi di Milano & INFN, Milano, Italy
A. Goldblatt, S. Mazzoni, G. Trad
CERN, Geneva, Switzerland
U. Iriso, A.A. Nosych, L. Torino
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

In this work we describe a novel beam diagnostic method based on coherence characterization of broad-spectrum bending magnet radiation through the Heterodyne Near Field Scattering (HNFS) technique. HNFS is a self-referencing technique based on the interference between the transmitted beam and the spherical waves scattered by each particle of a colloidal suspension. The resulting single-particle interferogram shows circular fringes modulated by the spatio-temporal Complex Coherence Factor (CCF) of the radiation. Superposition of a number of these patterns results in a stochastic speckle field, from which spatial and temporal coherence information of the source can be retrieved in near field conditions. Here we describe the basics of this technique, the experimental setup mounted along the hard X-ray pinhole at the ALBA synchrotron light source, and the possibility of transverse electron beam size retrieval from the spatial coherence function of the emitted dipole radiation. We also show preliminary results concerning power spectral density of visible synchrotron radiation as obtained from temporal coherence.

Poster MOPG73 [1.804 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG73

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WEBL03

Beam Shape Reconstruction Using Synchrotron Radiation Interferometry

589

L. Torino, U. Iriso
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

Synchrotron Radiation Interferometry (SRI) through a double-aperture system is a well known technique to measure the transverse beam size using visible light. In many machines the beam is tilted in the transverse plane, but the SRI technique only allows to directly measure the size of the projection of the beam shape along the axis connecting the two apertures. A method to fully reconstruct the beam in the transverse plane using SRI has been developed and successfully tested at the ALBA synchrotron light source. This report shows the full beam reconstruction technique and presents the results at ALBA. Moreover, we also discuss how this technique could improve the measurement of very small beam sizes, improving the resolution of standard SRI.

Slides WEBL03 [20.443 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEBL03

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THBL03

Closing Remarks

U. Iriso, F. Pérez
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

We announce of the upcoming IBICs, summarize the IBIC 2016 and close the conference.

Slides THBL03 [11.443 MB]

Export •

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