RUPAC2012 - List of Authors (Ivanov, S.V.)

Paper

Title

Page

Accelerator Complex U70 of IHEP: Status and Upgrades

85

S.V. Ivanov
IHEP, Moscow Region, Russia

The report overviews present status of the Accelerator Complex U70 of IHEP-Protvino comprising four machines (2 linear accelerators and 2 synchrotrons). Particular emphasis is put on the recent upgrades implemented since the previous conference RuPAC-2010.

Slides WEYCH01 [2.404 MB]

WECCH01

Advances of Light-Ion Acceleration Program in the U70

120

S.V. Ivanov
IHEP, Moscow Region, Russia

The paper reports on the recent progress in implementing the program of accelerating light ions in the Accelerator Complex U70 of IHEP-Protvino. The list of milestones achieved since RuPAC-2010 includes: (1) Proof-of-principle acceleration of Carbon-12 to the top available 34.1 GeV per nucleon (specific kinetic energy). (2) Circulation and slow extraction from U70 of the carbon beam at flat-bottom 455 MeV per nucleon. (3) The first ever successful extraction of Carbon nuclei at 24.1 GeV per nucleon to the existing beam transfer line #22 followed by feeding the FODS experimental facility with carbon beam for fixed-target high-energy nuclear physics start-up.

Slides WECCH01 [1.956 MB]

WEPPD046

Digital Delay-Line Periodic FIR Filter Layout of Transverse Feedback in the U70

647

O.P. Lebedev, N.A. Ignashin, S.V. Ivanov, S.E. Sytov
IHEP, Moscow Region, Russia

A novel architecture of the wide-band transverse feedback system was successfully beam-tested in the U70 proton synchrotron of IHEP-Protvino. It employs a finite-time impulse response (FIR) non-recursive filter layout based on 3 (or 4, optionally) variable (10%) multi-turn digital delay lines. Apart of using these natural-to-DSP components, the configuration involved has, at least, two operational advantages: (1) A single beam pickup layout plus acceptability of an arbitrary betatron phase advance between pickup and kicker. (2) A straightforward rejection of hampering DC and higher rotation frequency harmonic signals from beam position readouts. The latter occurs due to a periodic notch nature inherent in the amplitude-frequency in-out open-loop feedback transfer function. The paper reports on technical solutions implemented, problem-oriented R&D studies, and beam observations.

Paper	Title	Page
WEYCH01	Accelerator Complex U70 of IHEP: Status and Upgrades	85
	S.V. Ivanov IHEP, Moscow Region, Russia
	The report overviews present status of the Accelerator Complex U70 of IHEP-Protvino comprising four machines (2 linear accelerators and 2 synchrotrons). Particular emphasis is put on the recent upgrades implemented since the previous conference RuPAC-2010.
	Slides WEYCH01 [2.404 MB]

WECCH01	Advances of Light-Ion Acceleration Program in the U70	120
	S.V. Ivanov IHEP, Moscow Region, Russia
	The paper reports on the recent progress in implementing the program of accelerating light ions in the Accelerator Complex U70 of IHEP-Protvino. The list of milestones achieved since RuPAC-2010 includes: (1) Proof-of-principle acceleration of Carbon-12 to the top available 34.1 GeV per nucleon (specific kinetic energy). (2) Circulation and slow extraction from U70 of the carbon beam at flat-bottom 455 MeV per nucleon. (3) The first ever successful extraction of Carbon nuclei at 24.1 GeV per nucleon to the existing beam transfer line #22 followed by feeding the FODS experimental facility with carbon beam for fixed-target high-energy nuclear physics start-up.
	Slides WECCH01 [1.956 MB]

WEPPD046	Digital Delay-Line Periodic FIR Filter Layout of Transverse Feedback in the U70	647
	O.P. Lebedev, N.A. Ignashin, S.V. Ivanov, S.E. Sytov IHEP, Moscow Region, Russia
	A novel architecture of the wide-band transverse feedback system was successfully beam-tested in the U70 proton synchrotron of IHEP-Protvino. It employs a finite-time impulse response (FIR) non-recursive filter layout based on 3 (or 4, optionally) variable (10%) multi-turn digital delay lines. Apart of using these natural-to-DSP components, the configuration involved has, at least, two operational advantages: (1) A single beam pickup layout plus acceptability of an arbitrary betatron phase advance between pickup and kicker. (2) A straightforward rejection of hampering DC and higher rotation frequency harmonic signals from beam position readouts. The latter occurs due to a periodic notch nature inherent in the amplitude-frequency in-out open-loop feedback transfer function. The paper reports on technical solutions implemented, problem-oriented R&D studies, and beam observations.