COOL2019 - List of Authors (Caspers, F.)

Paper	Title	Page
MOY01	First Operation for Stochastic Cooling of P-Bars in the CERN AD Using Optical Delay Notch Filter and Plans 2021 Operation	6
	W. Höfle, L. Arnaudon, E. Bjørsvik, F. Caspers, T. Eriksson, R. Louwerse, V.R. Myklebust CERN, Meyrin, Switzerland
	During the 2018 run of AD a notch filter with optical delay lines for the longitudinal stochastic cooling at 3.5 GeV/c was successfully tested with beam for the first time. The contribution will summarise the hardware implemented including a comparison of the hardware transfer functions of the new system and the original system using a coaxial cable plant for the same purpose. Automatic monitoring of the hardware transfer function being prepared for 2021 will be provided in order to periodically check drifts of the system and send corrections to the control of the system. Integration of this monitoring and feedforward system into the CERN controls environment will be shown.
	Slides MOY01 [13.332 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-MOY01
About •	paper received ※ 20 September 2019 paper accepted ※ 21 October 2019 issue date ※ 01 November 2019
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THY02	Progress of Stochastic Cooling on SRing of HIAF
	J.X. Wu, Z. Du, X.J. Hu, G. Zhu IMP/CAS, Lanzhou, People’s Republic of China F. Caspers, L. Thorndahl CERN, Meyrin, Switzerland
	We report on the preliminary design of Slot-ring and Faltin type pickups and kickers for stochastic pre-cooling of rare isotope beams from 400 MeV/u to 740 MeV/u (beta: 0.71-0.83), using a bandwidth of 0.6-1.2 Ghz for the Spectrometer ring (SRing) in the HIAF project at IMP. In this paper we present and discuss the shunt impedance data of both prototypes (Slot-ring and Faltin type) from measurements with beam on CSRm, as well as by numerical simulations. The simulated and measured results are in good agreement. Frequency domain simulations data for the SRing stochastic cooling systems are also presented in this paper.
	Slides THY02 [14.095 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

First Operation for Stochastic Cooling of P-Bars in the CERN AD Using Optical Delay Notch Filter and Plans 2021 Operation

6

W. Höfle, L. Arnaudon, E. Bjørsvik, F. Caspers, T. Eriksson, R. Louwerse, V.R. Myklebust
CERN, Meyrin, Switzerland

During the 2018 run of AD a notch filter with optical delay lines for the longitudinal stochastic cooling at 3.5 GeV/c was successfully tested with beam for the first time. The contribution will summarise the hardware implemented including a comparison of the hardware transfer functions of the new system and the original system using a coaxial cable plant for the same purpose. Automatic monitoring of the hardware transfer function being prepared for 2021 will be provided in order to periodically check drifts of the system and send corrections to the control of the system. Integration of this monitoring and feedforward system into the CERN controls environment will be shown.

Slides MOY01 [13.332 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-MOY01

About •

paper received ※ 20 September 2019 paper accepted ※ 21 October 2019 issue date ※ 01 November 2019

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THY02

Progress of Stochastic Cooling on SRing of HIAF

J.X. Wu, Z. Du, X.J. Hu, G. Zhu
IMP/CAS, Lanzhou, People’s Republic of China
F. Caspers, L. Thorndahl
CERN, Meyrin, Switzerland

We report on the preliminary design of Slot-ring and Faltin type pickups and kickers for stochastic pre-cooling of rare isotope beams from 400 MeV/u to 740 MeV/u (beta: 0.71-0.83), using a bandwidth of 0.6-1.2 Ghz for the Spectrometer ring (SRing) in the HIAF project at IMP. In this paper we present and discuss the shunt impedance data of both prototypes (Slot-ring and Faltin type) from measurements with beam on CSRm, as well as by numerical simulations. The simulated and measured results are in good agreement. Frequency domain simulations data for the SRing stochastic cooling systems are also presented in this paper.

Slides THY02 [14.095 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)