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| MOP12 |
Production of Cavity Beam Position Monitors for the ARES Accelerator at DESY |
dipole, cavity, simulation, experiment |
47 |
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- D. Lipka, M. Holz, S. Vilcins
DESY, Hamburg, Germany
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The SINBAD facility (Short and INnovative Bunches and Accelerators at DESY) hosts various experiments in the field of production of ultra-short electron bunches and novel high gradient acceleration techniques. The SINBAD facility, also called ARES (Accelerator Research Experiment at SINBAD), is a conventional S-band linear RF accelerator allowing the production of low charge ultra-short electron bunches within a range between 0.5 pC and 1000 pC. The positions of the low charge bunches will be detected by cavity beam position monitors. The principal design is based on the experience from the EU-XFEL cavity beam position monitors. It consists of a 316 LN stainless steel body with a design loaded quality factor of 70, a resonance frequency of 3.3 GHz and a relative wide gap of 15 mm to reach a high peak position sensitivity of 4.25 V/(nC mm). This poster covered, the manufacture of the individual mechanical parts, as well as presents the special features in the manufacture of customer designed UHV feedthroughs.
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| DOI • |
reference for this paper
※ doi:10.18429/JACoW-IBIC2022-MOP12
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| About • |
Received ※ 05 September 2022 — Revised ※ 09 September 2022 — Accepted ※ 11 September 2022 — Issue date ※ 06 November 2022 |
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| MOP16 |
Time Resolved Dynamics of Transverse Resonance Island Buckets at SPEAR3 |
kicker, experiment, timing, lattice |
62 |
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- K. Tian, W.J. Corbett, J. Kim, J.A. Safranek
SLAC, Menlo Park, California, USA
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The Transverse Resonance Island Buckets have been studied at SPEAR3 as an option for timing experiment mode operation of this third generation synchrotron radiation facility. In this mode, with proper optics setting, the electron beam is populated to island orbits with the excitation from a kicker. In this paper, we will report the experimental observation of the beam dynamics with turn by turn beam position monitors and a fast gated camera. The results are also compared with tracking simulations.
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| DOI • |
reference for this paper
※ doi:10.18429/JACoW-IBIC2022-MOP16
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| About • |
Received ※ 07 September 2022 — Revised ※ 09 September 2022 — Accepted ※ 11 September 2022 — Issue date ※ 22 September 2022 |
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| MOP27 |
Design Considerations of the Corrugated Structures in a Vacuum Chamber for Impedance Studies at KARA |
impedance, bunching, simulation, radiation |
100 |
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- S. Maier, M. Brosi, H.J. Cha, A. Mochihashi, A.-S. Müller, M.J. Nasse, P. Schreiber, M. Schwarz
KIT, Karlsruhe, Germany
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Funding: Supported by the DFG project 431704792 in the ANR-DFG collaboration project ULTRASYNC and by the Doctoral School KSETA.
Two parallel, corrugated plates will be installed at the KIT storage ring KARA (KArlsruhe Research Accelerator). This impedance manipulation structure can be used to study and eventually control the electron beam dynamics and the emitted coherent synchrotron radiation (CSR) at KARA. In this contribution, we present the design of the impedance manipulation structure with corrugated plates, simulation results showing the influence of different corrugation parameters on its impedance, and the impact of this additional impedance source on the temporal changes in the emitted CSR in the presence of the microbunching instability.
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| DOI • |
reference for this paper
※ doi:10.18429/JACoW-IBIC2022-MOP27
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| About • |
Received ※ 05 September 2022 — Revised ※ 09 September 2022 — Accepted ※ 11 September 2022 — Issue date ※ 07 December 2022 |
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| WEP30 |
Creation of the First High-Inductance Sensor of the New CCC-Sm Series |
shielding, pick-up, cryogenics, antiproton |
469 |
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- V. Tympel, T. Stöhlker
HIJ, Jena, Germany
- L. Crescimbeni, D.M. Haider, M. Schwickert, T. Sieber, T. Stöhlker
GSI, Darmstadt, Germany
- F. Machalett, T. Stöhlker
IOQ, Jena, Germany
- M. Schmelz, T. Schönau, R. Stolz, V. Zakosarenko
IPHT, Jena, Germany
- F. Schmidl, T. Schönau, P. Seidel
FSU Jena, Jena, Germany
- V. Zakosarenko
Supracon AG, Jena, Germany
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Funding: Supported by the BMBF, project number 05P21SJRB1.
Cryogenic Current Comparators (CCC) are presently used at CERN-AD (100 mm beamline diameter) and in the FAIR project at CRYRING (150 mm beamline diameter) for non-destructive absolute measurement of beam currents below 20 ’A (current resolution 10 nA). Both sensor versions (CERN-Nb-CCC and FAIR-Nb-CCC-XD) use niobium as superconductor for the DC-transformer and magnetic shielding. The integrated flux concentrators have an inductance of below 100 ’H at 4.2 Kelvin. The new Sm-series (smart & small) is designed for a beamline diameter of 63 mm and uses lead for the superconducting shield. The first sensor (IFK-Pb-DCCC-Sm-200) has two core-based pickup coils (2x 100 µH at 4.2 K) and two SQUID units, to eliminate Barkhausen current jumps as part of the low frequency 1/f-noise. During the construction some basic experiments on noise behavior (fluctuation’dissipation theorem, white noise below 2 pA/sqrt(Hz)) and magnetic shielding (flux concentrator and shielding as LC circuit resonance , additional mu-metal shielding) were undertaken, the results of which are presented here. Finally, a current resolution of 500 pA could be achieved in the laboratory.
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Poster WEP30 [1.474 MB]
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| DOI • |
reference for this paper
※ doi:10.18429/JACoW-IBIC2022-WEP30
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| About • |
Received ※ 05 September 2022 — Revised ※ 10 September 2022 — Accepted ※ 11 September 2022 — Issue date ※ 12 September 2022 |
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