Tune Measurement System of the SKIF Booster Belikov, O. V.; Bekhtenev, E. A.; Dementev, E. N. ...
Physics of particles and nuclei letters,
08/2023, Volume:
20, Issue:
4
Journal Article
Peer reviewed
Tune measurement system developed in Budker Institute of Nuclear Physics for the Booster of the SKIF project provides fast and accurate measurements of fractional part of betatron tunes during ...Booster acceleration cycle. Resonance excitation of betatron oscillations with help of radio frequency (RF) pulses feeding to the kiker electrodes is used in the system. The minimal tune measurement time is 1.3 ms, which allows having tunes measurement data for each phase of the Booster accelerating cycle. The system can perform up to 256 measurements during 400 ms time interval of Booster energy ramping. The tune measurement accuracy is better than 0.001
f
0
, where
f
0
is Booster revolution frequency.
This paper describes an approach enabling the continuous monitoring of all devices on the Synchrotron Radiation Facility Siberian Circular Photon Source (SRF SKIF) accelerator complex units ...synchronically with the measurements of beam parameters. The operation of devices is monitored in distributed controllers with a frequency of 10 kHz. After detecting any deviations from specified parameters above the tolerance value in the operation of a device, the controller of this device sets a corresponding signal. When a beam exhibits an abnormal behavior, the comparative analysis of synchronous data from the distributed controllers and the beam diagnosing electronics is performed to reveal the device resulting in such a behavior.
BPM System for VEPP-4M Collider Bekhtenev, E. A.; Karpov, G. V.
Physics of particles and nuclei letters,
12/2018, Volume:
15, Issue:
7
Journal Article
Peer reviewed
Developed in BINP wideband beam position monitor (BPM) electronics has been installed at the VEPP-4M electron-positron collider. The VEPP-4M operates with two electron and two positron bunches. Wide ...bandwidth of new electronics (200 MHz) allows the separate measurements of electron and positron bunches with time interval between bunches up to 18 ns. At present upgrade all 54 BPMs are supplied with new electronics. The electronics can measure the position of each of four bunches. BPM system works at two modes: slow closed orbit measurements and turn-by-turn measurements. We present details of system design and operation.
A new system for measuring the position of the beam in a pulsed transport channel from the VEPP-3 storage ring to the VEPP-4M collider is discussed, which provides measurement of the position and ...intensity of an electron or positron beam in one span. For reliable operation of the experimental complex, it is necessary to continuously monitor the beam trajectory in a non-destructive manner, as well as to measure the possible losses of the beam charge. In 2018, new sensors and new electronics of the beam position measurement system were developed, manufactured, and installed in the transportation channel, which provide much greater accuracy compared to the old system. In the new system, it was possible to almost completely eliminate interference and to achieve measurement accuracy better than 0.02 mm, which is more than enough for optimal tuning of the channel optics and achieving high bypass efficiency. The design of the sensor, the structure and the main features of the construction of electronics are described, the accuracy of measurements is analyzed, and some results of the operation of the new system in the channel are given.
The VEPP-4M storage ring has been designed for experiments with colliding electron−positron beams, a synchrotron radiation beam, and extracted γ-ray beams at energies of 1−5 GeV. A correct ...equilibrium beam orbit must be kept in the storage ring to maintain the required experimental conditions. A beam position monitor system is used for this purpose. It includes 54 beam position monitors, monitor signal-processing modules, and synch signals distributors. In 2013–2016, new signal processing modules with a high time resolution were developed and installed at the VEPP-4M storage ring. These have two main advantages over the old modules. First, the new modules allow separate position measurements of electron and positron bunches at an interval between the bunch signals as long as 18 ns. Second, they are able to perform fullfledged turn-by-turn beam position measurements, which is very important for adjustment of the storagering parameters. Turn-by-turn beam position measurements can be performed during injection of a new beam, beam kicking, beam loss, or at an arbitrary instant of time. The structures and main features of the new modules are described, the measurement accuracy is analyzed, and some results of their operation at the storage ring are presented.
BPM system for transport channel Booster–Nuclotron at NICA facility 1 is developing now at Budker Institute of Nuclear Physics (BINP). The system consists of 6 electrostatic 2-coordinate BPMs and ...processing electronics. It is capable to measure ion beam trajectory after each shot. The electronics consists of Preamplifiers installed near BPMs and signal processing modules located in safe room. At present a prototype of BPM electronics is fabricated and tested. Software on base of TANGO is developing now for BPM system control.
Using the 1.32
pb
-
1
statistics collected at the
J
/
ψ
peak with the KEDR detector at the VEPP-4M
e
+
e
-
collider, we measured the branching fractions of
J
/
ψ
meson decays to the final states 2(
π
...+
π
-
)
π
0
,
K
+
K
-
π
+
π
-
π
0
, 2(
π
+
π
-
)
and
K
+
K
-
π
+
π
-
. The results obtained for the decays
J
/
ψ
→
2(
π
+
π
-
)
π
0
,
J
/
ψ
→
K
+
K
-
π
+
π
-
π
0
contradict the measurements performed by other groups in the last century, but agree well with recent results of BABAR and BESIII collaborations.
The article describes the waveform monitoring complex of the linear induction accelerator designed for radiographic experiments. The equipment of the complex allows recording waveforms of hundreds of ...pulsed signals with duration of tens of nanoseconds to tens of milliseconds, which provides comprehensive information on the operation of the accelerator. The article addresses a wide range of issues: architecture of the waveform monitoring complex, types of primary sensors, techniques of analog signal transmission with low distortion, hardware, software, and methods of data processing.
The electron cooling system for the NICA booster has been under construction and tested over the last few years at the Institute of Nuclear Physics. The design of this setup and the results of tests ...are detailed.
In order to achieve the design luminosity in the NICA collider, it is planned to equip it with both stochastic and electron cooling. The electron-cooling system (ECS) for 2.5 MeV consists of two ...coolers which cool both ion beams simultaneously. The Budker Institute of Nuclear Physics (BINP SB RAS) already built and commissioned an electron cooling system for the NICA booster, and now the high-voltage ECS for the collider is being developed. This paper describes the basic elements of the system and the status of the cooler development.
