PSI status 2008—Developments at the 590MeV proton accelerator facility

Wagner, W.; Seidel, Mike; Morenzoni, E.; Groeschel, F.; Wohlmuther, M.; Daum, M.

doi:10.1016/j.nima.2008.11.018

Cited by 17 publications

(44 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We propose the irradiation of the πHe + with laser pulses that induce transitions from the metastable state (16,15), to a state (17, 14) with a picosecond-scale lifetime against Auger emission of the 1s electron (Fig. 1).…”

Section: Laser Spectroscopy Methodsmentioning

confidence: 99%

“…Simulations [1] indicate that the centroid of this profile can in principle be determined with a precision of < 1 GHz, which corresponds to a fractional precision of better than ∼ 1 × 10 −6 on the πHe + transition frequency ν exp . Other laser transitions, e.g., (17, 16)→ (16,15) between metastable states are predicted to have resonance lineshapes that are much narrower.…”

Section: Laser Spectroscopy Methodsmentioning

confidence: 99%

“…Towards laser spectroscopy of pionic helium at Paul Scherrer Institute Masaki Hori The πHe + are synthesized by allowing a 85-MeV π − beam of intensity > 10 7 s −1 produced by the PSI ring cyclotron [15,16] to come to rest in the liquid helium target. The precise time structure of this π − beam allows the formation of πHe + to be synchronized to the arrival of the resonant laser pulses at the target [1].…”

Section: Pos(tipp2014)342mentioning

confidence: 99%

See 2 more Smart Citations

Attempt at laser spectroscopy of pionic helium atoms at PSI

Hori¹,

Sótér²,

Aghai-Khozani³

et al. 2015

Proceedings of Technology and Instrumentation in Particle Physics 2014 — PoS(TIPP2014)

View full text Add to dashboard Cite

Metastable pionic helium is a hypothetical three-body atom composed of a helium nucleus, a π − occupying a Rydberg state, and an electron occupying the ground state. The PiHe collaboration is currently attempting to carry out laser spectroscopy of these atoms using the 590-MeV ring cyclotron of the Paul Scherrer Institute. We briefly describe the method by which we intend to detect the spectroscopic signal. Physics 2014, 2-6 June, 2014 Amsterdam, the Netherlands * Speaker. 1.7 (7) 8 ( Technology and Instrumentation in Particle

show abstract

Section: Laser Spectroscopy Methodsmentioning

confidence: 99%

Section: Laser Spectroscopy Methodsmentioning

confidence: 99%

Section: Pos(tipp2014)342mentioning

confidence: 99%

See 1 more Smart Citation

Attempt at laser spectroscopy of pionic helium atoms at PSI

Hori¹,

Sótér²,

Aghai-Khozani³

et al. 2015

Proceedings of Technology and Instrumentation in Particle Physics 2014 — PoS(TIPP2014)

View full text Add to dashboard Cite

show abstract

“…40) A 72 MeV 2.2 mA proton beam has already been used for experiments at a cyclotron facility of Paul Scherrer Institute in Switzerland. 41) Hence, a high-intensity 36 MeV deuteron beam could be obtained by considering the magnetic rigidity (the momentum per unit charge of a particle) of the cyclotron. Sumitomo Heavy Industries, Ltd. has constructed an azimuthally varying field (AVF) cyclotron, which can provide a 30 MeV 1 mA H À beam for Boron Neutron Capture Therapy (BNCT).…”

Section: Production Of Accelerator Neutronsmentioning

confidence: 99%

Generation of Radioisotopes with Accelerator Neutrons by Deuterons

et al. 2013

View full text Add to dashboard Cite

A new system proposed for the generation of radioisotopes with accelerator neutrons by deuterons (GRAND) is described by mainly discussing the production of 99 Mo used for nuclear medicine diagnosis. A prototype facility of this system consists of a cyclotron to produce intense accelerator neutrons from the nat C(d,n) reaction with 40 MeV 2 mA deuteron beams, and a sublimation system to separate 99m Tc from an irradiated 100 MoO 3 sample. About 8.1 TBq/week of 99 Mo is produced by repeating irradiation on an enriched 100 Mo sample (251 g) with accelerator neutrons for two days three times. It meets about 10% of the 99 Mo demand in Japan. The characteristic feature of the system lies in its capability to reliably produce a wide variety of high-quality, carrier-free, carrier-added radioisotopes with a minimum level of radioactive waste without using uranium. The system is compact in size, and easy to operate; therefore it could be used worldwide to produce radioisotopes for medical, research, and industrial applications.

show abstract

“…In radiation therapy, proton [1][2][3][4][5] and heavy-ion beams [6][7][8][9][10] have a great advantage over X-rays because of the high radiation biological effectiveness (RBE) of providing biological damage on malignant tumors and also of suppressing the fast recovery of the DNA. Furthermore, the well-controlled delivery, of the radiation to the planned treatment volume (PTV) and the well-defined depth of interaction, minimize an unnecessary delivery of the dose to normal tissue or sensitive organs surrounding the cancer tumor.…”

Section: Introductionmentioning

confidence: 99%

Test of a Multilayer Dose-Verification Gaseous Detector with Raster-Scan-Mode Proton Beams

Lee¹,

Ahn²,

Han³

et al. 2015

IEIE Transactions on Smart Processing and Computing

View full text Add to dashboard Cite

A multilayer gaseous detector has been developed for the fast dose-verification measurements of raster-scan-mode therapeutic beams in particle therapy. The detector, which was constructed with eight thin parallel plate ionization chambers (PPICs) and polymethyl methacrylate (PMMA) absorber plates, is closely tissue-equivalent in a beam's eye view (BEV). The gas-electron signals, collected on the strips and pad arrays of each PPIC, were amplified and processed with a continuous charge-integration mode. The detector was test with 190-MeV raster-scan-mode beams that were provided by the Proton Therapy Facility at Samsung Medical Center, Seoul, South Korea. The detector responses, of the PPICs for a 190-MeV raster-scan-mode proton beam, agreed well with the doses predicted by the GEANT4 simulations. Furthermore, in this study it was confirmed that the detector simultaneously tracked the doses induced at the PPICs by the fast-oscillating beam, with a scanning speed of 2 m s -1. Thus, it is anticipates that the present detector, composed of thin PPICs and operating in the charge-integration mode, will allow medical scientists to perform reliable fast dose verification measurements for the typical dynamic mode therapeutic beams.

show abstract

PSI status 2008—Developments at the 590MeV proton accelerator facility

Cited by 17 publications

References 4 publications

Attempt at laser spectroscopy of pionic helium atoms at PSI

Attempt at laser spectroscopy of pionic helium atoms at PSI

Generation of Radioisotopes with Accelerator Neutrons by Deuterons

Test of a Multilayer Dose-Verification Gaseous Detector with Raster-Scan-Mode Proton Beams

Contact Info

Product

Resources

About