Completion of the Brightness Upgrade of the ALS

Steier, C.; Madur, A.; Bailey, B.; Berg, K; Biocca, A.; Black, A.; Casey, P.; Colomb, D; Gunion, B.; Li, N; Marks, S.; Nishimura, Hiroshi; Pappas, Chris H.; Petermann, K.; Portmann, G.; Prestemon, S.; Rawlins, A.; Robin, D.; Rossi, S.; Scarvie, T.; Schlueter, R.; Sun, Changchun; Tarawneh, Hamed; Wan, Weishi; Williams, E.; Yin, Lixin; Zhou, Qiaogen; Jin, Jianbo; Zhang, Jin‐Lin; Chen, C; Wen, Yintang; Wu, Jiangtao

doi:10.1088/1742-6596/493/1/012030

Cited by 10 publications

(6 citation statements)

References 1 publication

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“…In addition, the transverse and momentum acceptances were found to be too small to allow for accumulation of electrons using standard off-axis injection schemes 31 – 33 and at the same time providing a sufficiently large beam lifetime 7 , 34 . It should however be noted that recent upgrade programmes have since then proposed injection schemes with very small transverse acceptance 35 , 36 to overcome these limits, but these options were not considered for the new ESRF ring at the time.…”

Section: Hmba Lattice Characteristicsmentioning

confidence: 99%

The Extremely Brilliant Source storage ring of the European Synchrotron Radiation Facility

et al. 2023

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The Extremely Brilliant Source (EBS) is the experimental implementation of the novel Hybrid Multi Bend Achromat (HMBA) storage ring magnetic lattice concept, which has been realised at European Synchrotron Radiation Facility. We present its successful commissioning and first operation. We highlight the strengths of the HMBA design and compare them to the previous designs, on which most operational synchrotron X-ray sources are based. We report on the EBS storage ring’s significantly improved horizontal electron beam emittance and other key beam parameters. EBS extends the reach of synchrotron X-ray science confirming the HMBA concept for future facility upgrades and new constructions.

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Section: Hmba Lattice Characteristicsmentioning

confidence: 99%

The Extremely Brilliant Source storage ring of the European Synchrotron Radiation Facility

et al. 2023

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“…The proposed lattice for the Advanced Light Source upgrade (ALS-U) [19] into a diffraction-limited soft x-rays light source is a 9-Bend Achromat reproducing the 12-fold symmetric footprint of the existing ALS [20]. The required small emittance is achieved by much stronger focusing than in the present ALS.…”

Section: Als-u Accumulator Ringmentioning

confidence: 99%

Toolkit for simulated commissioning of storage-ring light sources and application to the advanced light source upgrade accumulator

Hellert

Amstutz

Steier

et al. 2019

Phys. Rev. Accel. Beams

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We present a new accelerator toolbox (AT)-based toolkit for simulating the commissioning of lightsource storage rings. The toolkit provides a framework for supporting high-level scripts to represent with realism the various procedures (e.g., orbit and optics correction, beam-based alignment, etc.) encountered during commissioning and is designed to mirror as closely as possible the reality as seen from the control room. Emphasis is placed on the inclusion of a comprehensive set of error sources and faithful modeling of beam diagnostics. The toolkit capabilities are demonstrated in an application to the recent design and commissioning studies of the Advanced Light Source Upgrade (ALS-U) Accumulator Ring, a short-time successful commissioning of which will be critical to the overall ALS-U project success.

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“…To run the PSB-KAC scheme, we first need to setup the storage ring lattice at a correct working tune. At the ALS, the nominal tunes of the machine was (16.25, 9.20) after the recent brightness upgrade [9]. To run the KAC scheme at the vertical fractional tune of 0.25, we need to adjust the vertical tune from 9.20 to 9.25.…”

Section: A Machine Setupmentioning

confidence: 99%

Characterization of pseudosingle bunch kick-and-cancel operational mode

Sun

Robin

Steier

et al. 2015

Phys. Rev. ST Accel. Beams

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Pseudosingle-bunch kick-and-cancel (PSB-KAC) is a new operational mode at the Advanced Light Source of Lawrence Berkeley National Laboratory that provides full timing and repetition rate control for single x-ray pulse users while being fully transparent to other users of synchrotron radiation light. In this operational mode, a single electron bunch is periodically displaced from a main bunch train by a fast kicker magnet with a user-on-demand repetition rate, creating a single x-ray pulse to be matched to a typical laser excitation pulse rate. This operational mode can significantly improve the signal to noise ratio of single x-ray pulse experiments and drastically reduce dose-induced sample damage rate. It greatly expands the capabilities of synchrotron light sources to carry out dynamics and time-of-flight experiments. In this paper, we carry out extensive characterizations of this PSB-KAC mode both numerically and experimentally. This includes the working principle of this mode, resonance conditions and beam stability, experimental setups, and diagnostic tools and measurements.

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Completion of the Brightness Upgrade of the ALS

Cited by 10 publications

References 1 publication

The Extremely Brilliant Source storage ring of the European Synchrotron Radiation Facility

The Extremely Brilliant Source storage ring of the European Synchrotron Radiation Facility

Toolkit for simulated commissioning of storage-ring light sources and application to the advanced light source upgrade accumulator

Characterization of pseudosingle bunch kick-and-cancel operational mode

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