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Commissioning of Nsls-ii Booster
| Content Provider | Semantic Scholar |
|---|---|
| Author | Gurov, S. M. Karnaev, S. E. Kiselev, V. A. Levichev, Evgeny Sinyatkin, S. V. Zhuravlev, Andrey |
| Copyright Year | 2014 |
| Abstract | The National Synchrotron Light Source II is a third generation light source, which was constructed at Brookhaven National Laboratory. This project includes a highly-optimized 3 GeV electron storage ring, linac preinjector, and full-energy synchrotron injector. Budker Institute of Nuclear Physics built and delivered the booster for NSLS-II. The commissioning of the booster was successfully completed. MAIN PARAMETERS The preliminary design was made by BNL [1]. The main booster parameters are given in Table 1. Table 1: Main Booster Parameters Circumference 158.4 m Injection energy 170-200MeV Extraction energy 3 – 3.15 GeV RF frequency 500 MHz Horizontal emittance at 3 GeV < 40 nm*rad Charge (Long pulse/Single pulse mode) 10nC / 0.5nC Charge transport efficiency > 75 % The booster was commissioned at 1Hz without stacking, although its design allows stacking and upgrade up to 2 Hz. The magnetic lattice includes four quadrants. For the aim of dispersion suppression, every quadrant contains five regular cells with two modified cells at the ends of the quadrant. Each quadrant contains 8 defocusing and 7 focusing dipole magnets of combined function. For compensation of the major part of chromaticity, a sextupole component is incorporated in both the dipole magnets [2]. TIMELINE The tender on the designing, production and commissioning of the NSLS-II booster was started in January 2010. Budker Institute of Nuclear Physics won this tender in May 2010. The booster was designed [3], produced and delivered in full to BNL by September 2012. The booster was assembled (see Fig.1) and all equipment was tested by 2013 [4]. In 2013, while waiting for the authorization to start the commissioning, Extended Integrated Testing of injector were fulfilled [5]. These tests included a heat run of all systems with beam signal emulation, calibration of the diagnostics system, debugging of the High Level Applications, and testing and improvement of the Equipment Protection System and the Personnel Protection System. The authorization to start the commissioning of the injector was received in November 2013. The BNL and BINP teams started beam injection into the Booster on December 8. The first turn was closed soon by tuning the LTB and BR orbit correctors. The beam was monitored using the beam flags [6] and BPMs in the single-pass mode. The beam was accelerated to 3 GeV by the end of 2013. The commissioning of the booster was successfully completed in February 2014. During the commissioning, a lot of time was devoted to Safety and Fault Studies, which included exploration of radiation environment at beam loss in different places. The results of the Fault Studies were analyzed and authorized before the next step of the commissioning procedure could be started. Figure 1: NSLS-II booster; arc #3 before an RF straight. ___________________________________________ #S.M.Gurov@inp.nsk.su 5th International Particle Accelerator Conference IPAC2014, Dresden, Germany JACoW Publishing ISBN: 978-3-95450-132-8 doi:10.18429/JACoW-IPAC2014-MOPRO088 02 Synchrotron Light Sources and FELs A05 Synchrotron Radiation Facilities MOPRO088 295 Co nt en tf ro m th is w or k m ay be us ed un de rt he te rm so ft he CC BY 3. 0 lic en ce (© 20 14 ). A ny di str ib ut io n of th is w or k m us tm ai nt ai n at tri bu tio n to th e au th or (s ), tit le of th e w or k, pu bl ish er ,a nd D O I. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://accelconf.web.cern.ch/AccelConf/IPAC2014/papers/mopro088.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
