ISOLDE contribution to task 118.Prediction of secondary beam intensities

Pierre Delahaye for the ISOLDE collaboration

EURISOL DS Task 11 kick-off meeting, GSI, Darmstadt 18/03/05

M7.1 The ISOLDE yield database January 2006M7.2 Extrapolation of release efficiencies June 2006

The ISOLDE yield database

1 Yields available on Web 2

H He3 4 Yields analysed and published 5 6 7 8 9 10

Li Be B C N O F Ne11 12 13 14 15 16 17 18

Na Mg Al Si P S Cl Ar19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54

Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe

55 56 57 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86

Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn87 88 89 104 105 106 107 108 109 110 111 112

Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg

58 59 60 61 62 63 64 65 66 67 68 69 70 71Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu

90 91 92 93 94 95 96 97 98 99 100 101 102 103

Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

Yield data to be analysed

Release profile ISOLDE

80Rb release80Rb release

t=0: production of radioisotopes by 2 s short proton pulse

logarithmic linear

1. Pulsed driver beam 2. Yield determination requires measurement of entire

release curve lengthy!3. Release curve provides additional information on

performance of target and ion source unit.

Empiric release formula

F(t) = N · (1-exp(-t/trise)) · ( · exp(-t/tfast) + (1-) · exp(-t/tslow))

80Rb release 80Rb release

Empiric 4-parameter formula:

J. Lettry et al., Nucl. Instr. Meth. B126 (1997) 130.

Release = Diffusion + Desorption + Effusion.

Status

Cs from La

Cd from Sn

K, Ca from Ti

Rn from UCx/ThCx

Further data available for analysis:

Bruce, TeppoSb from UCx/ThCx

TeppoRb, Cs from UCx/ThCx

StrahinjaLi, Na, K from UCx/ThCx

IS419Hg, At,.. from Pb and Pb/Bi

U.K.Fr from UCx/ThCx

AngeliqueSn from LaCx, UCx

U.K.SrF from Nb, HfF3 from Ta

U.K.2003-2005 runs Mg, Ni, Zn from UCx

SandrinaNa, Mg from AlCx, Al2O3, SiC

Under analysis:

UK et al., ENAM0419-22O from UCx+MK7

FW et al., ICIS'03Minimono

UK et al., EMIS14Mg, Al, Cd, Tb, Yb, Tl, Pb, Bi

UK et al., EMIS14oxide targets

KP et al., EMIS14Mn, Kr from SrO, ZrO2, Nb

UB et al., EMIS14He, Ne, Ar, Kr, Xe from UCx/ThCx + MK7

UK et al., ENAM'01Ga from UCx

Published:

Cs from La

Cd from Sn

K, Ca from Ti

Rn from UCx/ThCx

Further data available for analysis:

Bruce, TeppoSb from UCx/ThCx

TeppoRb, Cs from UCx/ThCx

StrahinjaLi, Na, K from UCx/ThCx

IS419Hg, At,.. from Pb and Pb/Bi

U.K.Fr from UCx/ThCx

AngeliqueSn from LaCx, UCx

U.K.SrF from Nb, HfF3 from Ta

U.K.2003-2005 runs Mg, Ni, Zn from UCx

SandrinaNa, Mg from AlCx, Al2O3, SiC

Under analysis:

UK et al., ENAM0419-22O from UCx+MK7

FW et al., ICIS'03Minimono

UK et al., EMIS14Mg, Al, Cd, Tb, Yb, Tl, Pb, Bi

UK et al., EMIS14oxide targets

KP et al., EMIS14Mn, Kr from SrO, ZrO2, Nb

UB et al., EMIS14He, Ne, Ar, Kr, Xe from UCx/ThCx + MK7

UK et al., ENAM'01Ga from UCx

Published:

• M7.1 The ISOLDE database extension will be considered as completed with the release of the updated database as part of the Targisol project in January 2006

• M7.2 The extrapolation of the ISOLDE yields for the EURISOL-like targets will be done with the help of the participants of task 3

DeliverablesSecond year of EURISOL

M7.2 Extrapolation of yields for the EURISOL-type targets

• Specification of the future target units from the target groups (task 3): maximum impinging proton intensity

• Scaling of the yield according to– ISOLDE measured yields– maximum proton intensity– Expected progress in ionizing techniques

(ECR ion source, upgraded RILIS)

Conclusions

• The deliverable M7.1 (ISOLDE database) is on tracks, almost completed

• The deliverable M7.2 (Yield extrapolation) needs input from the task 3 participants. It is expected to be reached on time for the 100kW targets.

• Thank you to Ulli for his useful support

Thank you for your attention!