Design and construction of the POLAR detector Produit, N.; Bao, T.W.; Batsch, T. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
01/2018, Letnik:
877
Journal Article
Recenzirano
Odprti dostop
The POLAR detector is a space based Gamma Ray Burst (GRB) polarimeter with a wide field of view, which covers almost half the sky. The instrument uses Compton scattering of gamma rays on a plastic ...scintillator hodoscope to measure the polarization of the incoming photons. The instrument has been successfully launched on board of the Chinese space laboratory Tiangong 2 on September 15, 2016. The construction of the instrument components is described in this article. Details are provided on problems encountered during the construction phase and their solutions. Initial performance of the instrument in orbit is as expected from ground tests and Monte Carlo simulation.
The SLS storage ring support and alignment systems Zelenika, S.; Kramert, R.; Rivkin, L. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
07/2001, Letnik:
467
Journal Article
Recenzirano
Storage rings of third generation synchrotron radiation facilities pose severe challenges for lowering the beam emittances and increasing the lifetimes, requiring thus increasing positioning and ...alignment precisions that must be preserved over long time spans. This work describes the SLS storage ring mechanical support, alignment and disturbances compensation systems that allow to meet these requirements. In particular, their design, the tests done on the respective prototypes and the applicability of the developed arrangement to beam-based alignment are addressed.
The POLAR detector is a space based Gamma Ray Burst (GRB) polarimeter with a wide field of view, which covers almost half the sky. The instrument uses Compton scattering of gamma rays on a plastic ...scintillator hodoscope to measure the polarization of the incoming photons. The instrument has been successfully launched on board of the Chinese space laboratory Tiangong~2 on September 15, 2016. The construction of the instrument components is described in this article. Details are provided on problems encountered during the construction phase and their solutions. Initial performance of the instrument in orbit is as expected from ground tests and Monte Carlo simulation.
Commissioning of the SLS digital BPM system Schlott, V.; Dach, M.; Dehler, M. ...
PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268),
2001, Letnik:
3
Conference Proceeding
Odprti dostop
During the commissioning of the Swiss Light Source (SLS) first operational experience has been gathered with the newly developed digital beam position monitor (DBPM) system. The DBPM performance ...could be characterized in all available operation modes, which are: single turn, turn-by-turn, closed orbit and tune. All modes can be selected independently for each sector of the booster and storage ring through the EPICS-based SLS control system by simple re-programming of the digital processing chain. Laboratory measurements as well as measurements on the SLS accelerators will be presented, offering insights in the operational experience and the performance of the DBPM system. In addition, a monitoring system (POMS) for the transverse mechanical positions of each BPM block in reference to the adjacent quadrupole magnets has been installed and commissioned. First results will be presented, showing a horizontal and vertical movement of the BPM blocks as a function of beam current (heat load on the vacuum chamber) in the SLS storage ring.
PDF
