• A.O. Sidorin, A.V. Butenko, E.D. Donets, E.E. Donets, V.V. Fimushkin, A. Govorov, V. Kobets, I.N. Meshkov, V. Monchinsky, G.V. Trubnikov
  JINR, Dubna, Moscow Region
• A. Belov
  RAS/INR, Moscow
• O.K. Belyaev, Yu.A. Budanov, A.P. Maltsev, I.A. Zvonarev
  IHEP Protvino, Protvino, Moscow Region
• V.V. Kapin
  MEPhI, Moscow

The injector complex of the NICA facility consists of existing Alvarez-type linac LU-20 and new heavy ion linac HILac. The LU-20 is under modernization now, the HILac will be constructed during coming years. Parameters of the accelerators are presented.

• E. Syresin, D.E. Donets, E.D. Donets, E.E. Donets, V.V. Salnikov, V.B. Shutov
  JINR, Dubna, Moscow Region
• T. Honma, M. Kanazawa, K. Noda
  NIRS, Chiba-shi

The 11C isotopes are produced in the nitrogen gas target irradiated by a proton beam. If the nitrogen target contains 5% of hydrogen, about 5·E12 methane molecules can be produced each 20 minutes. The separated methane is loaded into the ion source. The technique used for formation of radioactive carbon beams was developed and tested in the JINR electron string ion source (ESIS) Krion-2. The measured conversion efficiency of methane molecules to carbon ions is rather high; it corresponds to 17 % for C⁴⁺ ions. The experimentally obtained C⁴⁺ ion intensity in ESIS was about 2·E9 ppp. The new ESIS-5T is under construction in JINR now at project ion intensity of 6·E9 ppp. Accelerated 12C ion beams are effectively used for cancer treatment at HIMAC. The positron emission tomography is the most effective way of tumor diagnostics. The intensive radioactive 11C ion beam could allow both these advantages to be combined. It could be used both for cancer treatment and for on-line PET. Formation of a primary radioactive ion beam at an intensity on the tumor target of 1·E8 pps allows the cancer treatment by the scanning radiation method and on-line dose verification.

• E. Syresin, D.E. Donets, E.D. Donets, E.E. Donets, V.M. Drobin, V.B. Shutov
  JINR, Dubna, Moscow Region
• A.E. Dubinov, R.M. Garipov, I.V. Makarov
  VNIIEF, Sarov (Nizhnii Gorod)
• A.V. Shabunov
  JINR/LHE, Moscow

The Electron String Ion Source (ESIS) developed at JINR is effectively used here during the last decade. The Tubular Electron String Ion Source (TESIS) has been put forward recently to obtain a 1-2 orders of magnitude increase in the ion output as compared with ESIS. The project is aimed at creating TESIS and studying the electron string in the tubular geometry. The new tubular source with a superconducting solenoid up to 5 T is under construction now. The method of the off axis TESIS ion extraction will be realized to get TESIS beam emittance comparable with ESIS emittance. It is expected that this new TESIS will meet all rigid conceptual and technological requirements and should provide an ion output approaching 10 mA of Ar¹⁶⁺ ions in the pulsed mode and about 10 μA of Ar¹⁶⁺ ions in the average current mode. Design, construction and test of separate TESIS systems are discussed in this report.