Paper |
Title |
Page |
TUPP032 |
J-PARC Test of ESS Beam on Target Diagnostics Prototypes Aperture Monitor and GRID |
387 |
|
- C.A. Thomas, J. Etxeberria, H. Kocevar, J.P.S. Martins, T.J. Shea
ESS, Lund, Sweden
- A.J. Johansson, M. Törmänen
Lund University, Lund, Sweden
- S.I. Meigo, M. Ooi
JAEA/J-PARC, Tokai-mura, Japan
- H. Niu, B. Zhang
IMP/CAS, Lanzhou, People’s Republic of China
|
|
|
The ESS high power beam will be delivered to the spallation target with high degree of control. To this end, we have designed a suite of instruments which provide measurement of the beam characteristics in a drift space a few meters from the target. Two of these instruments, the APTerure Monitor (APTM) and the GRID are presented. The APTM is designed to measure the fraction of beam going through the defined aperture; its time acquisition ranges from intra-pulse at µs sampling rate to many pulses over seconds. The GRID measures the projected horizontal and vertical profiles, sampling the pulse at 1MHz. A prototype of these two instruments has been designed and installed in the 3NBT dump line of J-PARC. They are designed to test functionality of these instruments in a similar environment as ESS. The 3NBT Dump line at J-PARC presents such an environment. In the second part of the paper we report the results and the measurements performed to test the prototypes. Before concluding we will discuss the results and propose improvements to the instruments final design.
|
|
DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2019-TUPP032
|
|
About • |
paper received ※ 04 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019 |
|
Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
|
|
WECO04 |
Commissioning of the Non-invasive Profile Monitors for the ESS LEBT |
495 |
|
- C.A. Thomas, J. Etxeberria, S. Haghtalab, H. Kocevar, N. Milas, R. Miyamoto, T.J. Shea, R. Tarkeshian
ESS, Lund, Sweden
|
|
|
In the Low Energy Beam Transport (LEBT) of the European Spallation Source (ESS) Linac, a specific Non-invasive Profile Monitor (NPM) has been designed to primarily monitor beam position monitor with 100 µm accuracy, and in addition enable beam profile and size measurement. We present the first measurement results using NPM during the commissioning of the LEBT. The measurement results conclude the beam position as well as the angle of the beam. The performance of the measurement is discussed and compared to the required accuracy for the position measurement. In addition, the profile of the beam along the propagation axis is reported, as measured for part or the full pulse transported in the LEBT. The fidelity of the reported profile will be discussed as function of the system sensitivity and image signal to noise ratio.
|
|
|
Slides WECO04 [11.779 MB]
|
|
DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2019-WECO04
|
|
About • |
paper received ※ 04 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019 |
|
Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
|
|