The heavy ion cooler-storage-ring project (HIRFL-CSR) at Lanzhou

Xia, J.W.; Wenlong, Zhan; Bian, Wei; Yuan, Y. J.; Song, M. T.; Zhang, W.Z.; Yang, Xiao-Dong; Pan, Yuan; Gao, Daqing; Zhao, Hong; Yang, Xiaodong; Xiao, Guoqing; Man, Kaidi; Dang, Jianrong; X, Cai; Wang, Y.F.; Tang, Jiayong; Qiao, Weiyu; Rao, Ying; He, Yuan; Mao, Lijun; Zhou, Zhongxiang

doi:10.1016/s0168-9002(02)00475-8

Cited by 384 publications

(124 citation statements)

References 4 publications

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“…The high-energy part of the facility consists of a main cooler-storage ring (CSRm), operating as a heavy-ion synchrotron, and an experimental ring CSRe coupled to CSRm by an in-flight fragment separator RIBLL2 [29]. Details of the experiment and data analysis can be found in Ref.…”

Section: Experiments and Resultsmentioning

confidence: 99%

Masses of 52Co And their Impact On The Understanding Of Beta-decay Of 52Ni

Zhang¹

2017

Proceedings of the 26th International Nuclear Physics Conference — PoS(INPC2016)

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Mass excesses of 52 Co and its (2 + ) isomer are measured to be −34361(8) keV and −33974(10) keV using isochronous mass spectrometry at CSRe. Referring to the β -delayed γ emissions of 52 Ni, we identified a new excited state in 52 Co and assigned it as the T = 2, J π = 0 + isobaric analog state (IAS) of 52 Ni. This state is 135(17) keV less bound than that suggested previously based on the β -delayed protons of 52 Ni. We find that the mass of this IAS together with those of the IAS ′ s in 52 Fe, 52 Mn, and 52 Cr fit well into the Isobaric Multiplet Mass Equation.An interesting finding from this measurement is that the IAS in 52 Co decays dominantly via γ transitions while proton emission is almost negligible. This phenomenon could be due to very low isospin mixing according to the large-scale shell model calculations.

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Section: Experiments and Resultsmentioning

confidence: 99%

Masses of 52Co And their Impact On The Understanding Of Beta-decay Of 52Ni

Zhang¹

2017

Proceedings of the 26th International Nuclear Physics Conference — PoS(INPC2016)

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“…The Heavy Ion Research Facility in Lanzhou (HIRFL) has been successfully upgraded with a multifunctional Cooler Storage Ring (CSR) at the end of 2007 [1]. As the only injector of HIRFL, Sector Focusing Cyclotron (SFC), which has served for nearly 60 years, can provide beam to the experiment terminal directly as well as act as the injector of Separated Sector Cyclotron (SSC) or CSRm.…”

Section: Introductionmentioning

confidence: 99%

“…Fig.3 shows the layout of the whole linac with the resonance frequencies for tanks respectively. The linac injector mainly includes the following components: (1) an Electron Cyclotron Resonance Ion Source(ECRIS) that generates 0.004MeV/u heavy ions; (2) a RadioFrequency Quadrupole (RFQ) accelerator to bunch and pre-accelerate the ions to 0.3MeV/u; and (3) a Drift Tube linac (DTL), which is composed of 6 Interdigital H-type (IH) resonators, for the main acceleration up to 7.272MeV/u. …”

Section: Introductionmentioning

confidence: 99%

Conceptional design of a heavy ion linac injector for HIRFL-CSRm

Zhang¹,

Yuan²,

Xia³

et al. 2014

Chinese Phys. C

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A room temperature heavy ion linac has been proposed as a new injector of CSRm (the main Cooler Storage Ring) at HIRFL (Heavy Ion Research Facility in Lanzhou), which is expected to improve the performance of HIRFL. The linac injector can supply heavy ion with maximum mass to charge ratio of 7 and injection kinetic energy of 7.272MeV/u for CSRm, and the pulsed beam intensity is 3emA with the duty factor of 3%. Compared with the present cyclotron injector SFC (Sector Focusing Cyclotron), the beam current from linac can be improved by 10-100 times. As the pre-accelerator of the linac, the 108.48MHz 4-rod RFQ accelerates ion beam from 4keV/u to 300keV/u, which achieves the transmission efficiency of 95.3% with 3.07m long vanes. The phase advance has been taken into account to analysis the error tolerance, and parametric resonance have been carefully avoided by adjusting the structure parameters. KONUS IH-DTLs, which follow the RFQ, accelerate the ions up to the energy of 7.272MeV/u and inject into HIRFL-CSRm. The resonance frequency is 108.48MHz for the first two cavities and 216.96MHz for the last 5 DTLs. The maximum accelerating gradient can reach 4.95MV/m in DTL section with the length of 17.066m, and the total pulsed RF power is 2.8MW. A new strategy, for the determination of resonance frequency, RFQ vane voltage and DTL effective accelerating voltage, is described in detail. The beam dynamics design of the linac will be present in this paper.

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“…The Cooling Storage Ring (CSR) project in the Heavy Ion Research Facility at Lanzhou (HIRFL) consists of a main ring (CSRm), an experiment ring (CSRe), and a radioactive beam line (RIBLL2) to connect the two rings [1,2]. An internal target experiment for hadron physics and an external target experiment for heavy ion collisions are being built at the CSR complex.…”

Section: Introductionmentioning

confidence: 99%

A 128-Channel High Precision Time Measurement Module

Kang

Liu

Zhou

et al. 2013

Metrology and Measurement Systems

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In the external target experiment for heavy ion collisions in the HIRFL-CSR, Multi-Wire Drift Chambers are used to measure the drift time of charged particles to obtain the track information. This 128-channel high precision time measurement module is designed to perform the time digitization. The data transfer is based on a PXI interface to guarantee a high data rate. Test results show that a 100 ps resolution with a data transfer rate up to 40 MBps has been achieved; this module has also been proven to function well with the detector through a commissioning test.

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The heavy ion cooler-storage-ring project (HIRFL-CSR) at Lanzhou

Cited by 384 publications

References 4 publications

Masses of 52Co And their Impact On The Understanding Of Beta-decay Of 52Ni

Masses of 52Co And their Impact On The Understanding Of Beta-decay Of 52Ni

Conceptional design of a heavy ion linac injector for HIRFL-CSRm

A 128-Channel High Precision Time Measurement Module

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