| Title |
First Beam Profile Measurements by Beam Induced Fluorescence at the J-PARC Neutrino Extraction Beamline |
| Authors |
- M.L. Friend, S.V. Cao, K. Nakayoshi, K. Sakashita
KEK, Ibaraki, Japan
- M. Hartz
Kavli IPMU, Kashiwa, Japan
- Y. Koshio
Okayama University, Faculty of Science, Okayama City, Japan
- A. Nakamura
Okayama University, Okayama, Japan
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| Abstract |
A Beam Induced Fluorescence (BIF) profile monitor is under development at the J-PARC neutrino extraction beamline, where neutrinos are produced using 30 GeV protons from the J-PARC MR accelerator. Towards the goal of continuously and non-destructively measuring the 1.3MW proton beam profile spill-by-spill using fluorescence from proton interactions with injected gas, a full working prototype monitor was installed in the beamline in 2019. The prototype includes a scheme for pulsed injection of N₂ gas into the ultra-high vacuum beampipe and two optical readout arms, a conventional one using an Image Intensifier coupled to a CID camera, along with an array of optical fibers coupled to a Multi-Pixel Photon Counter array. Initial beam tests of the system were carried out in early 2020, and BIF light was successfully observed in both optical systems. Details of the prototype monitor, along with first proton beam profile measurement results, will be shown. Improvement plans towards continuous operation of the new profile monitor will also be discussed.
|
| Paper |
download WEPP34.PDF [6.060 MB / 4 pages] |
| Poster |
download WEPP34_POSTER.PDF [5.890 MB] |
| Export |
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| Conference |
IBIC2020 |
| Series |
International Beam Instrumentation Conference (9th) |
| Location |
Santos, Brazil |
| Date |
14-18 September 2020 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Daniel Tavares (LNLS, Campinas, Brazil); Renan Picoreti (LNLS, Campinas, Brazil); Gustavo Bruno (LNLS, Campinas, Brazil); Sergio Marques (LNLS, Campinas, Brazil); Volker R.W. Schaa (GSI, Darmstadt, Germany) |
| Online ISBN |
978-3-95450-222-6 |
| Online ISSN |
2673-5350 |
| Received |
03 September 2020 |
| Accepted |
17 September 2020 |
| Issue Date |
30 October 2020 |
| DOI |
doi:10.18429/JACoW-IBIC2020-WEPP34 |
| Pages |
184-187 |
| Copyright |
 Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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