NEW D

GM. Am

Abstract For more

operated theproviding ionto 11 MeV/uperiod as injwill ask for ions. The Uoperation sinneeds to be reThis new Ddemands of intermediate-dedicated suadditionally proton physicdesign for thfuture linacs a novel methinto machine

FUAll beams

through the requirementsTable 1.

The existin70ies and it Energy (HEprotons. For under design for the provdesign. Figu

DEVELOP

L. GroenGSI Helmhomberg, K. A

than three de Universal Lns from protonu. The UNILAector for the short pulses o

UNILAC Alvnce the earlieeplaced to ass

DTL will servhigh duty cy

-mass ions wiuperconductinprovision of

cs program. Ahat task. Theto be operate

hod to provids having flat i

UTURE REprovided for existing sync

s to the beam

Figure 1: The

ng UNILAC [is proposed

E) linac, provthe latter a and construct

vision of inture 2 sketches

PMENTS

ning, W. Baltzzentrum

Aulenbacher X. Ch

Goethe Un

decades, GSI Linear Accelens to uranium AC will serve

upcoming FAof high peak varez-type DTst days of the

sure reliable opve the needsycles of modill be met by ng cw-linac.

primary proA dedicated proe contributioned at GSI. Finde flat ion beinjection accep

EQUIREMFAIR (Fig.1)

chrotron SIS1ms of its injec

e FAIR accele

1] is in operatto replace it viding all iodedicated injtion. Finally, aermediate-ma

s the conceptu

S FOR TH

arth, G. Clemfür Schwerir, Helmholtzen, F. Dziub

niversity, D-

has successerator (UNILAat energies frofor a compar

AIR facility wcurrents of hTL has beene machine, anperation for FA

s of FAIR, wderate current

construction FAIR requ

otons for its oton linac is un will presentally, we intro

eams for injecptances.

MENTS ) will be deliv18. The accorctors are liste

erators.

tion since the ewith a new Hn species exjector is currea third sc cw-l

ass ions is uual layout of

HE PRESE

mente, V. Gionenforschz-Institut Mba, H. Podle-60325 Fran

fully AC), om 3 rable

which heavy n in nd it AIR.

while ts of of a

uires anti-

under t the duce ction

vered rding ed in

early High xcept ently linac

under f the

three develtogethfor an

Ion

E [M

IPulse

Mom

βγεx

βγεy

AcCavithigh velocCH cbe finFig. 3

It chouseseparand th

ENT AND

ettmann, S.hung, D-642

Mainz (HIM)ech, U. Ratznkfurt a.M.,

injectors.lopments relather with a geny ion linac.

Table 1: FA

238U

MeV/u] 11.

e [emA] 15

m. Spread 10-

[µm] 0.8

[µm] 2.5

70 MEceleration in tties (CH) opeimpedances o

cities, i.e. espeavities [2] wa

nished with th3.

Figure

can provide aes a quadruporating two CHhe second one

D FUTUR

Mickat, B. 291 Darmsta), D-55099 Mzinger, Germany

In the foted to these meneral concep

FAIR Injector B

U28+ 2

.4

5

-3

8 0

5 2

EV PROTOthis linac willerated at 325of the H-cavitecially to protas started 10 yhe testing of th

e 3: Prototype

acceleration frole triplet withH-cavities. Thee has 14 gaps.

RE GSI LI

Schlitt, adt, GermanMainz, Germ

ollowing themachines are t for flat bea

Beam Parame

238U73+ P

11.4 7

5.5 7

10-3 1

0.8 4

2.5 4

ON LINACl be done by C MHz, whichty family to htons. The R&ears ago and i

he first prototy

of CH-cavity.

rom 11 to 24 hin a prolongee first cavity

INACS

ny many

e dedicated highlighted

am provision

ters

Protons

70

70

10-3

4.2

4.2

C Cross-bar H-h extend the higher beam

&D related to it is about to

ype shown in

MeV/u and ed drift tube has 13 gaps

THPPP033 Proceedings of IPAC2012, New Orleans, Louisiana, USA

ISBN 978-3-95450-115-1

3806Cop

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2012

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04 Hadron Accelerators

A08 Linear Accelerators

Figure 2: Conlinac. Dimen

This tube

coupling cellresonates in resonates incoupled CH-into an Alvthrough proptuning is accorf-tuning w.plating is qusummer of 22013.

HIIn the ex

11.4 MeV/u itype DTLs prfor uranium.stripping to 3a gaseous stbeam loss frgas moleculerespective crhigher chargeSIS18 increais shifted froinjection accused withoutbe about 3 m1.2 MW. Figcavity.

Beam enerCH-cavities wto the protoncavities can bas for the pro

nceptual layousions are not t

in turn is inl coupling the

the TE211-mn the TM010--cavity pair isvarez-type cavper choice ofomplished by r.t. field flauite demandi2012. High p

IGH ENERxisting UNILAis done by conreceded by a The new H

3 MeV/u, thus tripper). This rom collisionses in the subsross sectionse states are usses with the chom 11.4 to 2ceptance. Up t changing the

m in length reqgure 4 shows

rgies beyond 1with a frequenn linac freqube powered w

oton linac.

uts of the fututo scale.

ntegrated into two CH-cavit

mode, while t-mode. Rf-co done in this vity. Initial rf all drift tubfive plungers

atness are pring and it wpower rf-tests

RGY (HE) LAC acceleratnventional 10stripping sect

HE linac [3] (Fto higher chachoice was

s with beam iequent synchr

s are significsed. Since the harge state, th

22 MeV/u to to 11.4 MeV

e frequency. Equiring an rf-pa simulation

11 MeV/u alloncy transition uency. Accordwith the same

ure linacs at G

a rectangulaties. Each of tthe coupling oupling into coupling cell

rf-tuning is dbes lengths. . First results fromising. Co

will be startes are planned

LINAC tion from 1.48.4 MHz Alvaion, i.e. 4+ toFig. 2) will d

arge states (38+made to mitiions with resirotron SIS18. cantly loweretune spread in

he injection enassure a con

V/u H-cavitiesEach of them power of less model of the

ow for transitioto 325.2 MHz

dingly, these kind of klyst

SI. From top t

ar rf-them

cell the

l like done Fine from

opper d in

d for

4 to arez- 28+

delay + for igate idual The

ed if n the

nergy nstant s are

will than first

on to z, i.e. CH-

trons

Figurcavity

An

with chargvery strippcomp

SinexpercycleHE-lifacilitthe Uunder(HIMconcesc-CHand operatimesElem

to buttom: pro

re 4: Simulaty.

n alternative laa solid state

ge state of 55+strong spac

per. Otherwisplete stripping

nce its early riments close (≤ 25%) beainac will servty. In order to

UNILAC lifetir design [4]

M) together witeptual layout iH-cavities [5] seven soleno

ation will allos by a factor o

ment 120). Tabl

oton linac, sc

tion model o

ayout of the He medium ins+ for uranium.e charge forse it would section to hig

SC CW-LIdays the U

to the Coulomams at few Mve exclusivelyo provide long ime, a dedicaat the Helmth the Frankfuis shown in Fioperated at 2

oids for transow for an effof about 20 (ele 2 summariz

cw-linac, and

f the first H

HE linac foresestead. It could. However, it wrces shortly require a s

gher energies.

INAC UNILAC servmb barrier, i.e

MeV/u of energy as injector fo

duty cycle beated cw-linac

mholtz-Instituteurt University ig. 2. It will co217 MHz for sverse focusinfective reductiexample for thzes the design

high energy

HE-linac IH-

ees stripping d provide a would cause behind the

shift of the

ved physics e. high duty-gy. The new for the FAIR eams beyond

is currently e at Mainz and GSI. Its

omprise nine acceleration ng; its cw-ion of beam he search of

n parameters.

Proceedings of IPAC2012, New Orleans, Louisiana, USA THPPP033

04 Hadron Accelerators

A08 Linear Accelerators

ISBN 978-3-95450-115-1

3807 Cop

yrig

htc ○

2012

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The linac wiHigh Chargeions initially

Table

Output energ

Injection ene

A/q

Beam current

Length of acc

Energy sprea

Currently

demonstratorcomprises a assembly is shown in Fiassembly, aalignment duwith beam at

Figure 5: Thcw-linac at G

FLAAs seen fr

the SIS18 requirementsbe provided emittances ofexisting UNIthe more striconsidered tovertical planbeam transfolinear opticalmodification modification inside a longstripper transnon-symplectsymplecticall

ill use an upe Injector (HLprovided by a

e 2: The CW-l

gy

ergy

t

celeration

ad

a first testr, is under sc CH-cavityintegrated int

ig. 5. It will alignment, anuring cooling d

a 1.4 MeV/u

he demonstratoGSI.

AT ION BErom Table 1 t

injector lins for the horiz

by the linacf a linac are geILAC. Since kingent design o transfer emitne. Such a traormations, whl elements eve

of the beamcan be achievitudinal field

sverse inter-pltic way. Theyly with tilted

graded versioLI) at GSI proan ECR source

linac Design P

2.5 – 7.5 Me

1.4 MeV/u

≤ 6.0

1.0 mA

12.7 m

± 3.0 keV/u

ing cryomodconstruction

y with adjaceto a horizontserve as a t

nd especiallydown. The setbranch of the

or cryomodul

EAM CREAthe design benacs are flaontal and vert. However, thenerally equalkeeping both value might b

ttance from thansfer requirehich cannot en if they are t’s eigen-emittved by placingregion. Insideane correlatio

y are to be requadrupoles

on of the exioviding 1.4 Mee.

Parameters

eV/u

u

dule, a so-caand design

ent solenoids. tal cryomodultesting devicey verificationt-up will be teHLI at GSI.

le for the new

ATION eam parameterat, i.e. diffetical emittancehe two transvl, and so it is aemittances be

be quite hard,he horizontal toes non-symplbe performedtilted. It requitances [6]. Sug a charge strie such a solenons are createdmoved afterw(skews). A se

sting eV/u

alled n. It

The le as e for n of ested

w sc-

rs of ferent es to verse at the elow it is o the ectic d by res a

uch a ipper oidal

d in a wards et-up

proviFig. 6

Figurhorizo

Altof ttransfstrippoverapropeFiguralongand vemittasimulmentifield tracki

Figuremitta

[1] W[2] G[3] G[4] F[5] H[6] A[7] L

ding a flat ion6.

re 6: Beam ontal to the ve

though a solethe beam’s formation nonped electrons aall system. Ther Hamiltoniare 7 shows theg the beam linvertical emittaance ratio of lations usingioned that theis modelled thing based on 3

re 7: Beam enance-transfer b

W. Barth et al.G. Clemente eG. Clemente eF. Dziuba et alH. Podlech et aA.J. Dragt, PRL. Groening, P

n beam is pro

line to transertical plane.

enoid is a symcharge stat

n-symplectic. as well as thehis omission can and causee beam’s envene. A beam ofances finally f12. The enve

g the TRACe results do nohrough 4D-ma3D-field maps

nvelopes and beamline.

REFEREN., Proc. of XX

et al., PRST-Aet al. Proc. of 2l. Proc. of 2nd al., PRST-AB

RA 45, 4 (1992PRST-AB 14,

oposed in [7]

sfer emittanc

mplectic devicte makes tThis re-set el stripping mecannot be moes the non-syelopes and rmf initially equafeatures a tranlopes were ob

CK code. It ot change if thatrices or thros.

rms-emittance

NCES XII Linac ConfAB 14, 1101012nd IPAC ConfIPAC Conf., (

B 10, 080101 (2). 064201 (2011

as shown in

ce from the

ce, the re-set the overall iminates the dia from the odelled by a ymplecticity. s-emittances al horizontal nsverse rms-btained from

should be he solenoidal ough particle

es along the

f., (2004). (2011). f., (2011). (2011). 2007).

1).

THPPP033 Proceedings of IPAC2012, New Orleans, Louisiana, USA

ISBN 978-3-95450-115-1

3808Cop

yrig

htc ○

2012

byIE

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–cc

Cre

ativ

eC

omm

onsA

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n3.

0(C

CB

Y3.

0)—

ccC

reat

ive

Com

mon

sAtt

ribu

tion

3.0

(CC

BY

3.0)

04 Hadron Accelerators

A08 Linear Accelerators