Beam Emittance Measurement By Pepper-pot Method

Wang, J.G.; Wang, D.X.; Reiser, M.

doi:10.1109/plasma.1991.695803

Cited by 8 publications

(7 citation statements)

References 1 publication

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“…Beam emittance is one of the beam properties for particle accelerators. Several methods have been developed for measuring the beam emittance, such as the slit [6], pepper-pot [7,8], and quad scan methods [9]. We used the pepper-pot method for the direct measurement of three-dimensional beam emittance.…”

Section: Methodsmentioning

confidence: 99%

Emittance Measurement for Beamline Extension at the PET Cyclotron

Park

Lee

Kim

2016

Science and Technology of Nuclear Installations

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Particle-induced X-ray emission is used for determining the elemental composition of materials. This method uses low-energy protons (of several MeV), which can be obtained from high-energy (of tens MeV) accelerators. Instead of manufacturing an accelerator for generating the MeV protons, the use of a PET cyclotron has been suggested for designing the beamline for multipurpose applications, especially for the PIXE experiment, which has a dedicated high-energy (of tens MeV) accelerator. The beam properties of the cyclotron were determined at this experimental facility by using an external beamline before transferring the ion beam to the experimental chamber. We measured the beam profile and calculated the emittance using the pepper-pot method. The beam profile was measured as the beam current using a wire scanner, and the emittance was measured as the beam distribution at the beam dump using a radiochromic film. We analyzed the measurement results and are planning to use the results obtained in the simulations of external beamline and aligned beamline components. We will consider energy degradation after computing the beamline simulation. The experimental study focused on measuring the emittance from the cyclotron, and the results of this study are presented in this paper.

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Section: Methodsmentioning

confidence: 99%

Emittance Measurement for Beamline Extension at the PET Cyclotron

Park

Lee

Kim

2016

Science and Technology of Nuclear Installations

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“…A simple pepperpot-like (see e.g. [35]) system consisting of a multiaperture plate and a flange (see figure 2) was installed after the extraction to determine the beam diameter and divergence from the induced markings on the aluminum flange. Water cooling was applied to the flange to ensure the heating caused by the ion bombardment would not distort the results.…”

Section: Experimental Methodsmentioning

confidence: 99%

Double einzel lens extraction for the JYFL 14 GHz ECR ion source designed with IBSimu

Toivanen¹,

Kalvas²,

Koivisto³

et al. 2013

J. Inst.

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In order to improve the performance of the JYFL 14 GHz electron cyclotron resonance ion source (ECRIS) and initiate low energy beam transport (LEBT) upgrade at the University of Jyväskylä, Department of Physics (JYFL) accelerator laboratory, a new ion beam extraction system has been designed and installed. The development of the new extraction was performed with the ion optical code IBSimu, making it the first ECRIS extraction designed with the code. The measured performance of the new extraction is in good agreement with the simulations. Compared to the old extraction the new system provides improved beam quality, i.e. lower transverse emittance values and improved structure of beam profiles, and transmission efficiency of the LEBT and the JYFL K-130 cyclotron. For example, the transmission efficiencies of 40 Ar 8+ and 84 Kr 16+ beams have increased by 80 and 90 %, respectively. The new extraction system is capable of handling higher beam currents than the old one, which has been demonstrated by extracting new 4 He + and 4 He 2+ record beam currents of 1.12 mA and 720 µA, exceeding the old records of the JYFL 14 GHz ECRIS by a factor of two.

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“…The beam emittance is measured inside the diagnostics station using the pepper-pot method [13]. The pepperpot plate is made of a 250 µm thick stainless steel and acts as a mask.…”

Section: Beam Emittancementioning

confidence: 99%

Ion source and LEBT of KAHVELab proton beamline

Adıgüzel,

Açıksöz,

Çağlar

et al. 2022

Preprint

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The KAHVE Laboratory, at Bogaziçi University, Istanbul, Turkey is home to an educational proton linac project. The proton beam will originate from a 20 keV H+ source and will be delivered to a two module Radio Frequency Quadrupole (RFQ) operating at 800 MHz via a low energy beam transport (LEBT) line. Currently, the design phase being over, commissioning and stability tests are ongoing for the proton beamline which is already produced and installed except the RFQ which is being manufactured. This work summarizes the design, production and test phases of the ion source and LEBT line components.

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Beam Emittance Measurement By Pepper-pot Method

Cited by 8 publications

References 1 publication

Emittance Measurement for Beamline Extension at the PET Cyclotron

Emittance Measurement for Beamline Extension at the PET Cyclotron

Double einzel lens extraction for the JYFL 14 GHz ECR ion source designed with IBSimu

Ion source and LEBT of KAHVELab proton beamline

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