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Secondary beam production with fragment separators

Secondary beam production with fragment separators. Introduction Application Statistics Reaction Mechanisms New features New utilities Optimization procedures Perspectives.

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Secondary beam production with fragment separators

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  1. Secondary beam production with fragment separators • Introduction • Application • Statistics • Reaction Mechanisms • New features • New utilities • Optimization procedures • Perspectives The code operates under MS Windows environment and provides a highly user-friendly interface. It can be freely downloaded from the following internet address: http://www.nscl.msu/edu/lise EMIS. 24-29.06.07, Deaville, France

  2. 20 years of the LISE code The program LISE 1) is designed to predict intensities and purities for the planning of future experiments using radioactive beams with in-flight separators, as well as for tuning experiments where its results can be quickly compared to on-line data. An application of transport integral 2) lies in the basis of fast calculations of the program for the estimation of temporary evolution of phase space distributions. 1) D.Bazin et al., NIM A 482 (2002) 314; O.B.Tarasov, et al.,NPA  701 (2002)  661-665.  2) D.Bazin and B.Sherrill, Phys.Rev.E50 (1994) 4017. 1986-1991 D.Bazin, GANIL v.1.0-2.0 1991-1993 D.Bazin, MSU O.Sorlin, Orsay v.2.1-2.3 The deliberate choice of personal computers (PCs) to implement the program was made for two reasons: * to make use of user-friendly features (menus, etc.); * so that the program could be used in different laboratories worldwide without modification. Evolution shows this was a good choice! IBM sold PCs in 1992 twice more than in 1991 after release the LISE version 2.2. LISE REFERENCE MANUAL Version 2.2 - June 8, 1992 …. LISE is a DOS-based software running on any IBM compatible PC. It runs under DOS 3.1 and following versions, and only needs 640 kbytes of memory. The speed of the program depends greatly on the CPU type, speed and configuration. The use of a co-processor is greatly recommended: the program uses FFT (Fast Fourier Transform) algorithms which contain extensive floating-point operations.The last version has been developed on a 386-SX at 16 MHz with a co-processor which provides a reasonable speed (about 1 second per transmission calculation). EMIS. 24-29.06.07, Deaville, France

  3. 20 years of the LISE code 1994-1997 O.T., GANIL v.2.3 – 2.9 Corrections, Modifications (compound target, compensating dipole) 1998 O.T., GANIL v.3.1 LISE operates under MS Windows EMIS. 24-29.06.07, Deaville, France

  4. 20 years of the LISE code Active development of the LISE code stimulated by M.Lewitowicz 1999-2000 O.T., GANIL v.3.2-4.9 LISE for Excel. It includes even transmission calculations. 2001 NSCL / MSU v.4.10 –5.12 Active development of the LISE code stimulated by B.Sherrill. Abrasion-Ablation model construction, ATIMA implementation Fusion residues transmission 1). PACE4 implementation. First reference 2) since 16 years! 1) O.Tarasov and D.Bazin, NIM B 204 (2003) 174. 2) D.Bazin et al., NIM A 482 (2002) 314. 2002 NSCL / MSU v.5.13 –5.15 EMIS. 24-29.06.07, Deaville, France

  5. 20 years of the LISE code Plans to develop LISE++ was announced 5 years ago on the EMIS14 conference (Victoria, Canada) LISE++.1) is the new generation of the LISE  code, which allows the creation of a spectrometer through the use of different “blocks”. 1) Nuclear Physics A746 (2004) 411-414 2003 NSCL / MSU v.6 • Convolution Model of momentum distributions of projectile fragmentation products developed in the LISE framework 1) • Coulomb Fission 2) 1) Nuclear Physics A734 (2004) 536-540 • 2) EPJ A25 (2005) 751 2004 NSCL / MSU v.7.1 2005 NSCL / MSU v.7.5 Abrasion – Fission Tech.report NSCL MSU, MSUCL-1300 2006 NSCL / MSU v.7.9 Fusion – Fission (P31) 2007 NSCL / MSU v.8.0 Monte Carlo calculation of fragment transmission Fragment production in material (P35) EMIS. 24-29.06.07, Deaville, France

  6. Main Features The LISE++ code can be used at low-energy, medium-energy and high-energy facilities(fragment- and recoil-separators with electrostatic and/or magnetic selections). A number of these facilities, like LISE3, SISSI/LISE3 and SPEG at GANIL, FRS and SuperFRS at GSI, COMBAS at Dubna, A1900 and S800 at NSCL, RIPSand BigRIPS at RIKEN, based on the separation of projectile-like and fission fragments are included or can be easily added to the existing configuration files. • Fast analytical calculations(Monte Carlo calculations are available too) • Reaction mechanismsProjectile FragmentationFusion-EvaporationFusion-Fission Coulomb FissionAbrasion-Fission • Highly user­friendly environment • Built-in help support • Ion charge state distributioncalculations(4 methods) • Range and energy loss in material calculations(4 methods) • Contribution of secondary reactions in the target • Fragment production in Material • Different selection methods • Optics(«Transport» matrices are used) • Built-in powerful tools • Physical Calculator • LISE for Excel • Nuclide and Isomeric states* Databases utilities • Relativistic Reaction Kinematics Calculations • Curved degrader calculation • PACE4 –evaporation MC code for Windows • The spectrometric handbook of J.Kantele & Units converter • Codes “Global” & “Charge” (charge state distributions) • Range optimization utility • “Brho” analyzer, Solenoid (Twinsol)* & ISOL-catcher* utilities • Transport envelope packet package • “Evaporation” calculator • Automatical search of two-dimensional peaks in experimental spectra EMIS. 24-29.06.07, Deaville, France

  7. LISE++ in action EMIS. 24-29.06.07, Deaville, France

  8. Application: World Wide Used EMIS. 24-29.06.07, Deaville, France

  9. Reaction mechanisms EMIS. 24-29.06.07, Deaville, France

  10. Projectile fragmentation & Transfer reactions NSCL / MSU 40Mg, 42,43Al T.Baumann et al., submitted 44Si O.T. et al., Phys. Rev. C 75, 064613 (2007) LISE++ Abrasion-Dissipation-Ablation model (ADA) /under construction/ LISE++ Abrasion-Ablation cannot explain production cross section dependences from target properties (size, N/Z ratio) and projectile energy. No explanation for pickup contribution EMIS. 24-29.06.07, Deaville, France

  11. Abrasion-Fission EMIS. 24-29.06.07, Deaville, France

  12. Abrasion – Fission: three excitation energy regions model Fig.2. Calculated excitation distribution of fissile nuclei produced in the reaction 238U(80AMeV)+Be. Fig.1. Calculated excitation distribution of fissile nuclei produced in the reaction 238U(1AGeV)+Pb. Fig.3. Measured [Enq99] and calculated by LISE elemental fission cross-sections for the reaction 238U(1AGeV)+Pb. Contributions from different EERs are shown in the plot also. Fig.5. Isotopic production cross-sections for fission products (Z=40) from the reaction 238U(1AGeV)+p obtained in work [Ber03] and calculated by the LISE AF model. Fig.4. Mass distributions of Z=40 isotopes fission fragments in the reaction 238U(1AGeV)+Pb. EMIS. 24-29.06.07, Deaville, France [Enq99] T.Enqvist et al., Nucl.Phys. A658 (1999) 47-66. [Ber03] M.Bernas et al, Nucl.Phys. A725 (2003) 213-253.

  13. “LISE++ development: Abrasion-Fission”, Tech. Rep. MSUCL-1300, September  2005, 131 pages “LISE++ development: Coulomb Fission”, Tech. Rep. MSUCL-1299, September  2005, 64 pages Abrasion-Fission Coulomb fission Search for new isotopes and isomers RIKEN (May,2007) T.Kubo et al., (see O43 by T.Ohnishi) MSU (April, 2007) A.Nettelton et al. EMIS. 24-29.06.07, Deaville, France

  14. Fusion-Fission EMIS. 24-29.06.07, Deaville, France

  15. Fusion-Fission is a new reaction mechanism to produce exotic radioactive beams P31 : “Fusion-Fission is a new reaction mechanism to produce exotic radioactive beams”, Contribution to the international EMIS 2007 conference, Deaville, France , June 24-29, 2007 EMIS. 24-29.06.07, Deaville, France

  16. Recent development (2006-2007) Reactions: Fusion-Fission Features: RF kicker block Isomers in LISE++ MC calculation of fragment transmission Fragment production in material Utilities: Twinsol ISOL catcher .. EMIS. 24-29.06.07, Deaville, France

  17. RF kicker: new block in LISE++ RF Kicker provides vertical (RIKEN,NSCL) beam separations for different secondary beam species due to their different time of flight values [1] [2] LISE++ The RFFS was commis-sioned with beam in early May 2007. Because of the purification from the RFFS, the large background from the contaminants was significantly reduced and 100Sn50+ particles successfully detected [3]. 1) RF kicker proposal, V. Andreev, D.Bazin, M. Doleans, D.Gorelov, F. Marti, X. Wu;RF-KICKER SYSTEM FOR SECONDARY BEAMS AT THE NSCL”, D. Gorelov, V. Andreev, D. Bazin, M. Doleans, T. Grimm, F. Marti, J. Vincent, X. Wu,Proceedings of 2005 Particle Accelerator Conference, Knoxville,   2) K.Yamada et al., Nuclear Physics A746 (2004) 156c-160c. 3) J. Stoker et al., “Commissioning Report on the NSCL RF Fragment Separator,” future presentation at the 234th ACS National Meeting, Boston, MA, 19th –23rd, August 2007 EMIS. 24-29.06.07, Deaville, France

  18. Isomers in LISE++ * GANIL isomer database in LISE++ * LISE internal isomer database * g-detector efficiency * Rate calculation of isomer g-rays * Isomeric g-spectrum * Identification 2D-plot in coincidence with g-rays LISE++ g-database g-registration settings Identification 2D-plot in coincidence with g-rays: Monte Carlo EMIS. 24-29.06.07, Deaville, France

  19. Monte Carlo calculation of fragment transmission Like in a regular experiment: the user chooses two coordinates in the MC transmission dialog to create a 2d-spectrum • Detector resolution is optionally taking into account for TOF, TKE and Energy Loss • Only transmission value for angular acceptance and cutting by slits are shown(not Q-state value, loose due to reaction in material, etc) • Transmission value corresponds for Last block used in the calculations (on this dialog for example the last block is “I2_wedge” block) EMIS. 24-29.06.07, Deaville, France

  20. Monte Carlo calculation of fragment transmission All LISE++ blocks were adapted for MC transmission including Gas-filled separator, Wien–filter, and RF-kicker. All remarks will be appreciated. RF-kicker example EMIS. 24-29.06.07, Deaville, France

  21. Monte Carlo calculation of fragment transmission D.J.M.’s idea EMIS. 24-29.06.07, Deaville, France

  22. Fragment production in material production target LISE++ convolution technique well suited to make calculations in reasonable time comparing to MC methods (P.35) Pink background shows that reactions will be calculated in this material reaction target #1 reaction target #2 Use this checkbox to make the code to consider this material as secondary target Up to three secondary targets can used in LISE++ calculations EMIS. 24-29.06.07, Deaville, France

  23. Fragment production in material Comparasion with experimental data EMIS. 24-29.06.07, Deaville, France

  24. New Utilities • Twinsol (solenoid) utility: ray trace and matrix solutions (TA&MU) • ISOL catcher utility(FLNR, Dubna) •  Wedge-wedge optimization(NSCL/MSU, GSI) • Kinematics calculator: Mott scattering (GANIL) • Decay channel analysis(NSCL/MSU) EMIS. 24-29.06.07, Deaville, France

  25. Optimization procedures to produce an intense and pure secondary beam using different reaction mechanisms • Target thickness (v.2.0) • Charge states combination (v.7.5) • Target thickness (v.7.5)charge states optimization + secondary reactions • Brho scanning (v.7.5)background rate calculation • Target – Wedge (v7.5)yield vs purity v.2 (1991) • RF kicker (v.7.6)position, slits size, phase:yield vs purity • Wedge – Wedge (v.7.8)yield vs purity EMIS. 24-29.06.07, Deaville, France

  26. Simulation of Transmission through Separator The exam was not passed! Graduate Student: “LISE++” A-F scale • User-friendly (interface, plots, documentation) • Transmission calculations (quality, speed) • Utilities, database (isotopes, gamma) development • Physics (reaction models, energy loss, charge states and etc) • Optics (optimization, high orders) • Adaptation to “real” life, Development A- A A+ B F A EMIS. 24-29.06.07, Deaville, France

  27. Perspectives LISE++ Ä MOTER = LISE_***** ?? A la “LISE” shell to construct a spectrometer LISE++ physics: Production mechanisms, energy loss etc LISE++ databases LISE++ graphics LISE++ ISOL catcher MOTER: optics and optimization EMIS. 24-29.06.07, Deaville, France

  28. “MOTER” ray trace code for MS Windows (FORTRAN and C++ versions) Morris’s Optimized Tracing of Enge’s Rays EMIS. 24-29.06.07, Deaville, France

  29. Summary Recently some models have been developed (AF, ADA) and several reaction mechanisms (CF, AF, FF) have been implemented the LISE++ code to calculate the transmission and yields of fragments produced and collected in a spectrometer. Fragment production in material and Monte Carlo calculation of fragment transmission are new features of the code. The LISE++ program becomes more and more an important tool for the planning experiments at different laboratories around the world (MSU, RIBF, GSI, GANIL, etc). Next step: LISE++ Ä MOTER The authors thank for the help and support in developing LISE++ code: Brad Sherrill (NSCL/MSU) Dave Morrissey (NSCL/MSU) Helmut Weick (GSI) Marek Lewitowicz (GANIL) DOE #DE-FG03-03ER41265 grant NSF #PHY-01-10253 grant • Welcome to the LISE site to see details! • Register in LISE’s sites to get information about new versions of the code • http://www.nscl.msu.edu/lise EMIS. 24-29.06.07, Deaville, France

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