working group 3 - slac national accelerator laboratory · pdf filej. ritin, “mechanical...

:

WORKING GROUP 3

MAIN LINAC

H. Mizuno and C. Adolphsen, Chairmen

Presentations

J. Wang, T. Higo, “Structure Development”

N. Hitomi, J. Rifkin, “Structure Manufacturing”

S. Tantawi, “DLDS RF Components”

C. Adolphsen, “Supports / Alignment / Operation”

-.Parallel Session

Review of Structure R&D

T. Higo, “Status of KEK Structure Development”

J. Wang, “Status of SLAC Structure Development”

Ongoing Collaboration Issues

DDS3 Assembly

J. Ritin, “Mechanical Design Review”

Y. Funahashi, “Bonding Procedure Review”

Discussion of Outstanding Issues

DDSS

Z. Li, “Design Optimization”

V. Srinivas, “Cell Calculation”

R. Jones, “Internal HOM Load Design and DDS Wakes”

Discussion of Design Status

I -

M2 High Power Test

Discussion of Preparation Work and Schedule

Future R&D

G. Bowden, “Research on Internal Fundamental Loads”

Discussion of Future Collaboration Efforts

-.

Structure Supports

G. Bowden, “Design Work at SLAC”

C. Adolphsen, “Structure Alignment Requirements”

C. Adolphsen, “Stability Tests at SLAC”

T. Suzuki, “Study of Alignment at KEK”

Discussion of Future Plans

Fabrication Studies

N. Hitomi, “Report on MD1 Bonding”

M. Yamamoto, “Report on MD1 Bonding”

H. Tsuchiya, “MD1 Straightness Measurements”

Discussion of Bonding Tests and Future Plans

Discussion with the Parameters Group

High Volume Manufacturing Issues

J. Klingmann, “Report on DDS3 Cell Machining”

J. Klingmann, “Ideas on Net Shaping, Stacking and Brazing”

N. Hitomi, “Structure Engineering Studies at KEK”

Discussion of Cell Tolerances, Production, Machining, Bonding etc.

Discussion with the Parameters Group

High Volume Manufacturing Issues

J. Klingmann, “Report on DDS3 Cell Machining”

J. Klingmann, “Ideas on Net Shaping, Stacking and Brazing”

N. Hitomi, “Structure Engineering Studies at KEK”

Discussion of Cell Tolerances, Production, Machining, Bonding etc.

Multi-Mode DLDS Design Review

S. Tantawi, “Overview”

Z. Li, “Design of Launcher”

N. Kroll, “Design of Bends”

Discussion of Future Modeling Work

Single-Mode DLDS

M. Neubauer, “Layout “

C. Adolphsen, “Operational Issues”

Discussion of Low Power Tests at BINP and KEK

Discussion of High Power Tests with the NLCTA

-

LINAC WORKING GROUP SUMMARY TALKS

(5 - 10 Minutes Each)

Structure Development - J. Wang / T. Higo

Structure Manufacturing - N. Hitorni / J. Rifkin

DLDS RF Components - S. Tantawi

Supports / Alignment / Operation - C. Adolphsen

-.

:

FIRST LC ISG WORKSHOP

SLAC

January 26-29, 1998

Summary Talk

WG 3: J. Wang

SUMMARYfor

Discussion on Accelerator Structure R&DJuwen Wang

l/29/98

.- We have been working very closely inaccelerator structure R&D for many years,

now we are getting even closer!

1 e Choice of Structure Type: RDDS Type

2. Section Length: L $2m

3. a/k Optimization

4. Ongoing Collaboration in Accelerator Sections:

i) DDS3 - Accelerator physics issues: kdn/df GaussianBetter HOM matching

- ASSET test and NLCTA project installation- Fabrication studies for LLNL- Full section bonding for lsf 60cm dia., 2m long section

by KEIUIHI based on their excellent skill and experiencesDetailed plan has been discussed:

DDS3D (dummy section) bonding practiceCell mechanical/microwave QCCell cleaning, packing, storage and shippingCell stacking and alignment checkDiffusion bonding

-.

Alignment, vacuum checkSection shippingFinal assemblyFinal Tests

ii) DDSS (first RDDS type section)- Design issues: Optimization

Cell dimension calculationWakefield calculationMeasurement and analysis for test stacksCompact couplers with symmetric/low fieldInternal HOM loadsFeasibility studies for internal fo loadParallel effort at KEK on open mode analysis

and coupler design- Cell design and fabrication issues -- VERY CHLLANGING!

KEK produced four #2 cells , microwave andmechanical QC results reviewed

190 test cell fabrication for DDSS20 special cells for DDSS1000 cells for machining and bonding studies

LLNL and SBRIIHI machining, comparison on MCC exam

iii) High Power Tests:- M2 high power test in ASTA- DDSl high power test in NLCTA- II-II high power in KEK

5. Other Important Issues, which are related bothaccelerator physics and engineering aspects, need to bestudied jointly by all collaborating institutions.

0 Tolerances (Machine Performance and Cost)

-.

- Theoretical model and mathematical treatment based onmachine physics

- Characterization for different machines and dimensions oftheir mass produced parts

- Cell QC and grouping

ii) Bonding tests (Reliability / Frequency Change)

- KEK’s experiences and data- Short stack tests on various temperature profile and pressure- Measurements for long sections

Only when we full understand the problem, then the finaldimension table for mass production can be decided.

iii) Surface cleanness and dark currentsimulation/analysis

I-


SLAC

January 26-29, 1998

Summary Talk

WG 3: T. Higo

-

--_e--- - --

DOSS 9pe 97 ?

T. Higo ISG Jan. 1998

Bonding and alignment

Recent stud.ies

f0 -- 80mm diam, 1.3 - 1.8m long )

Based on ultra-high precison machining

Manual stacking against V-block

Align c 5km w.r.t. V-block

With/without pre-bonding

Vertical hanging

diffusion bonding at > 850°C

- 20 pm gentle bow

- 5 IJ-m with pressing to V-block

VAC tight with He leak check


SLAC

January 26-29, 1998

Summary Talk

-. WG 3: N. Hitomi

Detailed plans for budget request of 1998

T. Higo 980 106, 980 122(rem. budget req.)

DDS3D

precise alignment / bonding study for DDS3finishing by the end of Feb. ‘98

R-DDS cell fabrication

2 tech. + 0.5 eng.clean rown maintenancerough machiningjigRF checking tool

tat-setestablish the base for the R-DDS fabrication

based on SLAC designregular, coupler, vacuum, horn port etc.

semi-mass production for DDS series

-. machining of ca. 1000 cellsfor machining study, bonding test use, etc.

mechanical checking of cellsevaluation of machning methodroutine check

RF checking of cells ---> manual checking stand

DDS5

1 tech. + 0.5 act.material 6m-longrough / medium machiningplunger / bead-pullbndimg at MHI / IHI?

will propose to SLAC from now

test cell fabrication -190 piecesmechanical check and RF check

special cell machining -20 piecescoupler, vacuum, HOM, etc.

coupler matching by KEK ----> cut and try

RF measurement before / after bonding at KEKbead-pull measurement system <---- KEK, Tsinghua, (SLAC)

one-shot bonding by KEK

the

Fine

st S

urfa

ce( M

ass

Prod

uctio

n L

evel

)

l

Inve

stig

ate

the

accu

racy

and

pro

duct

ivity

pote

ntia

l of m

ass-

prod

uctio

n m

achi

ne in

2003

.l

Look

for t

he c

uttin

g co

nditi

on to

sat

isfy

the

accu

racy

.l An

alyz

e th

e m

ajor

cau

se o

f fab

ricat

ion

erro

rsl

If ne

cess

ary,

rebu

ilt th

e X

EC

ultr

apr

ecis

ion

mac

hine

s.

Bonding study

1 tech. + 0.5 eng.experimental setupcheck bonding performancenew small but clean furnace

targetoptimize diffusion bonding parameterstudy 1 O--20 cell bonding

VAC furnaceHigashi’s, machining center,double evacuate type, Hisamatsu’s, . ...?- -

H2 furnaceTakeuchi’s, SLAC

outside heatingShinku-riko

study itemsvat seal6f due to bondingcell alignment along structuremechanical strength

study parameters-. . surface flatness, roughness

dust on surfacechecking tool, stacking environment

chemical property on surfacecarbon, oxygen,

temperature pattern rising and coolingpressurede-burring process

pressing, water jet, EP, . . . .partial pressure in furnacemechanical constraintsurface treatment

High power test of DS

0.5 tech. + 0.5 act. + 0.2 eng.SLACAR-S variouscontrol

targetcomplimentary experiment to SLAC ASTAinvestigate conditioning and final performance

M2 at ASTA of SLACfor extreamly high power 300--400 MW

( E_NL=73MV/m at 13OMW)now being preparing final vacuum WG components

IHl at KEKevaluate conditioning process

record BD eventskeep high power / high field experience at KEK

the

Opt

imum

Sta

ckin

g C

ondi

tion

l St

udy

the

surfa

ce tr

eatm

ent o

f cel

l.*R

insi

ng+D

ebur

ring

Ultra

-Pur

e-W

ater

Jet

l

Inve

stig

ate

the

conn

ecte

d su

rface

cond

ition

afte

r sta

ckin

g.W

ide

forc

e+R

ingi

ng fo

rce

+Cre

ep fo

rce

l

Sele

ct th

e be

tter

stac

king

pro

cess


SLAC

January 26-29, 1998

Summary Talk

WG 3: J. Rifkin

4 E. c

t c.

G -a

I

7


SLAC

January 26-29, 1998

Summary Talk

WG 3: S. Tantawi

--

- 12

.7 c

m C

ircul

ar

Kly

stron

Mod

e La

unch

er (

A s

et

Acc

eler

ator

I’

-7.4

cm

Circ

ular

Stru

ctur

e (-

1.8

m)

,

Sing

le-m

oded

DLD

S-_

-.---.

. ._

-.-.. -

-

TEOI

T&H

TEtl

(Ver

tical

)TE

tz (V

ertic

al)

TEt2

(H

oriz

onta

l)TE

rl M

ode

Extra

sTE

t2 M

ode

(Pow

er i

s ex

tract

ed e

venl

y- Ex

tract

or

Mod

e La

unch

er (

Fed

by4-

-6m

+fo

ur r

ecta

ngul

ar

Mul

ti-m

oded

DLD

S

Kly

stron

s

Tb

, -TE

oiM

ode

, C

onve

rter

-7.4

cm

Circ

ular

Stru

ctur

e (-

1.8

m)

TE,,,

Tm-n

ff

TEol

Mod

e C

onve

rter

(fed

by

four

rect

angu

lar

wav

egui

des)

:

Roger Miller’s Theorem,

0

0

0

0s= 1

21212

1,z

s.stT = I

0

0

0

0

-1

-21-21212,

4 Different Inputs 4 Different Output Modes

0 0

0 0

0 0

0 0

-1 -1--2 21 1-2 21 -1-

1,‘1 ]- -

2 2

--

1 12 2-1 -1-7-Y-1 112-1 1T?

0 0

0 0

0 0

0 0

1 12 ?

1 12 21 -1!iT-1 122

0 0

0 0

0 0

0 0

For a loss-less, reciprocal structure, if a set of orthogonal inputs that represents the basisfor all input vectors exists such that all the power in the inputs are transferred to theoutput, the inputs are isolated.

-

To th

e N

ext

Acc

eler

ator

Stru

ctur

e

TEOI

A

7.44

cm I

To A

ccel

erat

orSt

ruct

ure

\

Corru

gate

d G

uide

will

allo

w re

lativ

em

ovem

ents

bet

wee

n ac

cele

rato

rstr

uctu

res

with

out l

osse

s or

mod

eco

nver

sion

TEol

Tap

-Off

-

888+++alaal000000s

kc”087-7.- I a I

.EXXNz

6.-

-

,f -..j

TE, I

(V

ertic

al)

TEoi

TE, 1

(V

ertic

al)

TE, 1

(Ver

tical

)TE

lz (

Hor

izon

tal)

To A

ccel

erat

or+

Stru

ctur

es TEOI

Laun

cher

T&H

+-

Ext

ract

or

Extra

ctor

Sch

emat

ic D

iagr

am

, ,,

.,”

““,

.

A.0

4.01

l&us

e P

&de

Obj

ect

Gri

d2;

Key

boar

d

No

MIX

imm

sx

2.00

00e+

O(

y 2.

4000

e+O

(z

2_40

00e+

OC

Min

imx

-2.O

OOOe

+OC

y -2

.400

0e+O

C2

-2.4

000e

+OC

fvbu

se P

osit

ior

u +o

.ooo

v +o

.ooo

Un i

t sin

ches

Lef

tP

lfX

III- .

- -. .

bbus

e R

ight

-. I.+

i,,

: :

:

-t-

ving

o

bje

ct

ob

ject

7vi

ng

ob

ject

o

bje

ct8

ving

o

bje

ct

tt5

HFSS

!ip

OE

oA

. .

t&us

e t

&de

2E

’;:

Key

boar

d

Ye

Max

imm

sx

3.75

70e+

O(

y 2.

0000

e+O

(z

2.00

00e+

O(

Min

imrn

sx

- 1

.590

0e+O

(y

-2.O

OOOe

+Ol

z -2

OO

OOe+

Ol

v +l

.OO

Odu

+2

.400

dv

+O.O

OOU

nit

s inch

es

Mou

se

Lef

tIV

ENJ

PICK

l&us

e R

ight

I )-

b;=

.~ !J

(ta S

erpe

ntin

e M

ode

C,o

nver

ter

(TEI

1 -T

EO

l )

\ _--

-.

-,

(all

dim

ensi

ons

in

ni

m.>

tiod

e La

unch

er S

yste

m

or 8 kl

ystr

ons

I1

extr

acto

r

8 kl

ystr

ons

tTE

21 to

TE

OlTo

Acc

ml.

TEOl

TEOl

Line

TEll

rTl

GllbI-

-4

Lau

nche

r1

f-'

Del

ay

* Lo

cal

moBa ex

trac

ted

befo

re la

unch

ing

* La

unch 3 mo

des

into de

lay

line

I-

TEll-TEOl Launcher (E)* Tapered waveguides

* Single slot for both TEll and TEOl

* Tunable shorts

TElO-

TEOl-. TE11short . .

D=lf I D=1.488”--- -_-_-_-.-_-_---_-_---------.----------------------------

MAFIA

#VOL

UME

:OOR

DINA

TES/

MwLL RA

NGE

i WI

NDOW

{I0.

0000

, 0.

0387

731

[0.

0000

, 0.

0397

731

I[0.

0000

, 0.

0387

731

0.00

00,

0.03

8773

15 I

0.0000,

0.20

3501

[0.0000,

0.20

3501

XUBO

L: BR

ICK-

4?IMI......:

5.00

00fATERIALS:

L,j,l

PRAME:

202

/12/

97 -

16:4

1:44

VERS

ION[

V4.0

10]

l **

***

NO MA

FIA

FILE

AL

LOCA

TED

****

St

DLDS

MO

DE LA

UNCH

ER

[Al

- l/4

GEOM

ETRY

3D PL

OT OF

TH

E MA

TERI

AL DI

STRI

BUTI

ON IN

TH

E ME

SH

I .

Ir

IL-

COOR

DINA

TES/

MFU

LL RA

NGE

/ WI

NDOW

xc0.

0000

, 0.

0387

73]

f0.

0000

, 0.

0387

731

Y[0.

0000

, 0.

0387

731

L0.

0000

, 0.

0387

731

Z[0.

0000

,0.

2035

01[

0.00

00,

0.20

3501

SYMB

OL:

E3-E

NETI

ME..

....

:1.

9050

0E-0

4CO

MPON

BNT.

.= X

FUNC

TION

MI

N: 1.

3363

-16

FUNC

TION

MA

X: 4.

269E

-05

PLOT

TED

MIN:

1.

3363

-16

PLOT

TED

MAX:

4.

2693

-05

INTE

RPOL

ATE=

1

LOGS

CALE

...=

0

MATE

RIAL

S: 1,

.-I,”

.-FR

AME:

502

/12/

97-

16:1

0:25

VERS

ION[

V4.0

10]

MODE

ST.D

RC

DLDS

MO

DE LA

UNCN

ER [

Al

El-E

NE *[

APAC

TltE

2_EN

E *[

BFAC

Tl

V tW

ul.

HF-1

6l.

O7E-

052.

133-

053.

203-

054.

273-

05

1 !MAFI

AII#

3DCO

NTOU

RI

COOR

DINA

TES/

MFU

LL RA

NQE / WI

NDOW

XL0.0000,

0.03

8773

1[

0.00

00,

0.03

8773

1Y[

0.0000,

0.03

8773

1I

0.0000,

0.03

8773

1zi

0.0000,

0.2035Oj

I0.

0000

.0.

2035

01

FRAM

E:

302

/12/

91 -

16:1

9:25

VERS

ION[

V4.0

10]

MODE

ST.D

RC

DLDS

MO

DE LA

UNCH

ER [A

]

‘ (E)

TScfl

- l/4

QEOM

ETRY

pi-E

NE *[

ntiA

c+]t

Ez-E

% *[

BFAc

T]

I .I-.

1.14

E;17

7.01

E-06

1.40

E-05

2.10

E-05

- __._

._ _ ?

.80E

-(

TElO(TEOl,TEllconfiguration) lx10

-.

I-

Local mode (TE21) extract-launcher

:


SLAC

January 26-29, 1998

Summary Talk

WG 3: C. Adolphsen

----L-

I 1.3mx-4 i1

iG

17DE.97

7,S~Zcrlcr

. _.__ _ _..trm8port/insu#rtion

a- -I

r(

--

-

WIR

E A

LIG

NM

EN

T M

ON

ITO

R

PC!

Dig

itize

r

Mul

tiple

xer

Stre

tche

d W

ire

n

1 1.8

m M

ock

Acc

eler

ator

Stru

ctur

e’St

rong

back

rrClear qraphs before runnina CLEAFt

Numberofscanstock:

number of samples per scan

112.4~: i , ,7.4-i..------. __-...- -----.- .- -- ----- -4.6-i-! I

112.0-, i32

116.8~', 'Pl&5, ; 36

-5.3-, I-w desF id59 2 8 @mpdiffckgF l&l- .-.__

157.22-, ,./'\ -\()O& /ii', -\ .-'

,i' _,-

-200.00-' ,"'\ j, ,A-- '\,,

~ . /, " / I,\ ,'\ \ /,' '._400.00- 'X. \ /

Y l ii,!‘\ /

,'i /'V'-600.00-

Jo :/I/-800.00-' 'j\ /,,---jI ,,I' ,. c_-950.83-,

0 i 1 i i &i"6 f b b lb ill

pkd#i bpminitiai0.31----------- - -.--___

,lF\0.00-R / \

\ i ',l, ,! '\

" \ / '5‘\

JJ.50 - \'~.i,i I ,,,'/ '\

,fRi ',,,,' '\ " '?:/-----

-

n

2eY

--

0

plot #z ) RMS’

4.65-i

4.00-'

-4.oc- ?-5.00-’ _ .t ,-5.99-, , T I

31 100 260 300 4& 500 eiilo 700 8th 960

PlOl#4

END

VIEW

OF

I<LY

STI-W

N G

ALL

WY

AN

D T

UN

I\EL

AT

24AC

CELE

RATO

R S

ECTI

QNS

working group 3 - slac national accelerator laboratory · pdf filej. ritin, “mechanical...

Documents