Paper | Title | Other Keywords | Page |
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MOPP033 | Preliminary Design of Mu2E Spill Regulation System (SRS) | controls, extraction, FPGA, proton | 177 |
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Funding: This work was supported by the U.S. Department of Energy under contract No. DE-AC02-07CH11359. Direct µ->e conversion requires resonant extraction of a stream of pulsed beam, comprised of short micro-bunches (pulses) from the Delivery ring (DR) to the Mu2e target. Experimental needs and radiation protection apply strict requirements on the beam quality control and regulation of the spill. The objective of the Spill Regulation System (SRS) is to maintain the intensity uniformity of a stream of ~25K pulses as 1012 protons are extracted at 590.08kHz over a 43msec spill period. To meet the specified performance, two regulation elements will be driven simultaneously: a family of three zero-harmonic quadrupoles (tune ramp quads) and a RF Knock-Out (RFKO) system. The SRS will use two separate control loops to control each regulation element simultaneously. It will be critical to coordinate the SRS¿ processes within the machine cycle and within each spill interval. The SRS has been designed to have a total Gain-Bandwidth product of 10KHz, which can be used to mitigate several sources of ripple in the spill profile. |
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Poster MOPP033 [0.522 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP033 | ||
About • | paper received ※ 30 August 2019 paper accepted ※ 08 September 2019 issue date ※ 10 November 2019 | ||
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WEBO02 | MicroTCA.4 at Sirius and a Closer Look into the Community | hardware, electron, electronics, controls | 461 |
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More and more facilities have been adopting MicroTCA.4 as the standard for new electronics. Despite the advertised advantages in terms of system manageability, high availability, backplane performance and supply of high quality COTS modules by industry, the standard still lacks a greater acceptance in the accelerators community. This paper reports on the deployment of MicroTCA.4 systems at Sirius light source, which comprised the development and manufacturing of several open hardware modules, development of a generic gateware/software framework and re-implementation of MMC IPMI firmware as an open source project. A special focus will be given to the difficulties found, unforeseen expansions of the system and general architectural aspects. Based on this experience and on a survey carried out among other MicroTCA.4 adopters, the perceived strengths and weaknesses of the standard will be discussed and a tentative outlook on how it could be evolved to better suit the accelerators community will be presented. | |||
Slides WEBO02 [34.322 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-WEBO02 | ||
About • | paper received ※ 05 September 2019 paper accepted ※ 07 September 2019 issue date ※ 10 November 2019 | ||
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WEBO03 | Development of MTCA.4-Based BPM Electronics for SPring-8 Upgrade | electron, electronics, FPGA, low-level-rf | 471 |
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We have developed a new button-BPM readout electronics based on the MTCA.4 standard for the low-emittance upgrade of SPring-8 [*]. Requirements for the BPM system are a high single-pass BPM resolution of better than 100 µm for a 100 pC injected bunch to achieve first-turn steering in the commissioning of the upgraded ring and a highly stable COD BPM within 5 µm error for 1 month to maintain the optical axis of brilliant x-rays for users [**]. We designed an rf front-end rear transition module (RTM) having band-pass filters, low-noise amplifiers, step attenuators, and calibration tone generators. The rf signal is detected by a 16-bit 370 MSPS high-speed digitizer advanced mezzanine card (AMC) developed for the new low-level rf system of SPring-8 [***]. The firmware of the FPGA on the digitizer AMC was newly developed to implement various functions of the BPM system. We evaluated the readout system at a laboratory and then tested at the present SPring-8 storage ring with a prototype BPM head for the SPring-8 upgrade. We confirmed that the new readout system satisfies the requirements for the single-pass BPM resolution and the COD BPM stability.
* SPring-8-II Conceptual Design Report, http://rsc.riken.jp/pdf/SPring-8-II.pdf ** H. Maesaka et al., Proc. IBIC¿18, paper TUOC04. *** T. Ohshima et al., Proc. IPAC¿17, paper THPAB117. |
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Slides WEBO03 [3.340 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-WEBO03 | ||
About • | paper received ※ 04 September 2019 paper accepted ※ 08 September 2019 issue date ※ 10 November 2019 | ||
Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||