Fut

ure

Det

ecto

rs: F

INeS

SE

� FIN

eSS

E p

hysi

cs in

the

''Sci

Bat

h'' d

etec

tor

� Det

ecto

r pr

otot

ype

and

sim

ulat

ion

� Con

stru

ctio

n an

d co

sts

� Oth

er a

pplic

atio

ns

Bon

nie

T. F

lem

ing

NuI

NT

200

4G

ran

Sas

so L

abor

ator

y

Mot

ivat

ion

for

the

FIN

eSS

E ''

scib

ath'

' det

ecto

r:Lo

w e

nerg

y ne

utrin

o sc

atte

ring

phys

ics:

bel

ow D

IS

Lots

of p

hysi

cs to

do

at th

ese

low

ene

rgie

s

�

form

fact

or m

easu

rem

ents

�

cros

s se

ctio

n m

easu

rem

ents

�

shor

t bas

elin

e os

cilla

tion

phys

ics

mea

sure

men

t of s

mot

ivat

ed th

e F

INeS

SE

dete

ctor

des

ign

Fun

dam

enta

l asp

ect o

f nuc

leon

str

uctu

re:

- W

hat c

arrie

s th

e nu

cleo

n sp

in!

vale

nce

quar

ks, s

ea q

uark

s, g

luon

s?-

Can

we

desc

ribe

the

prot

on in

term

s of

a fu

ndam

enta

l the

ory?

The

se a

re s

till o

pen

ques

tions

!

�q

q'q

q

quas

i-ela

stic

C

C s

catte

ring

q=up

and

dow

n qu

arks

onl

y

Neu

tral

cur

rent

sc

atte

ring

q=an

y qu

ark

in th

e nu

cleo

n s

tran

ge q

uark

s

WZ

valu

es o

fs

dete

rmin

ed fr

om c

harg

ed le

pton

ex

perim

ents

var

y ev

en in

sig

n! N

ot w

ell u

nder

stoo

d m

easu

rem

ent!.

Low

Q2 :

Mea

sure

G AS

(Q2 =

0)=

ss=

spin

car

ried

by th

e s

and

s se

a

s is

impo

rtan

t for

cer

tain

dar

k m

atte

r se

arch

esw

here

the

neut

ralin

o-nu

cleu

s cr

oss

sect

ion

depe

nds

on q

uark

spi

ns.

Dif

ficu

lt to

mea

sure

p

p w

ith

larg

e fl

ux u

ncer

tain

ties

:m

easu

re th

e ra

tio

p

p/n

p

Neu

trin

o-nu

cleo

n el

astic

sca

tterin

g

- N

ucle

on N

eutr

al W

eak

Cur

rent

, J

, de

pend

s m

ost

stro

ngly

on

GA

(ax

ial)

form

fact

or...

(som

ewha

t on F

1,F 2

)

- G

A (Q

2 ) =

-

zg A(Q

2 ) +

GA

s (Q2 )

-

g A k

now

n (n

ucle

ar d

ecay

)

-

GA

s (Q

2 =0)

=

s

qq

Z

p

p

NC

cr

oss

sect

ion

at lo

w Q2

Rat

io o

f NC

ela

stic

sca

tterin

g to

CC

qua

si-e

last

ic s

catte

ring:

R(N

C/C

C)=

p, N

C)/

p, C

C)

To

mea

sure

s w

ith e

rror

0.

04,

need

R(N

C/C

C)

to ~

5% d

own

to Q2 =

0.2

GeV

2

the

right

Q2 :

Do

this

at Q

2 > 0

.2 G

eV2 ...

- m

inim

ize

nucl

ear

co

rrec

tions

(C

arbo

n)-

prot

on d

etec

tion

(T p = Q

2 /2m

p)

and

Q2 <

0.5

GeV

2 ...-

min

imiz

e w

orrie

s ab

out

Q2

evol

utio

n

-

eve

nt r

ates

hig

her

as w

ell

not t

oo lo

w...

..no

t too

hig

h....

high

inte

nsity

neu

trin

o be

am b

elow

DIS

turn

on

a de

tect

or th

at c

an r

econ

stru

ct:

�

p e

last

ic e

vent

s (s

hort

dis

tanc

e sc

ales

)

�

CC

QE

(lo

ng d

ista

nce

scal

es)

at th

ese

ener

gies

and

Q2 s

- 50

0m fr

om

targ

et:

M

iniB

ooN

E...

- 10

0m fr

om

targ

et:

op

en s

pace

...

ava

ilabl

e fo

r F

INeS

SE

One

opt

ion:

ne

ar lo

catio

n on

Boo

ster

Neu

trin

o B

eam

line

at F

NA

L

exist

ing

Oth

er p

lace

s to

do

this

phy

sics

:

�

near

det

ecto

r at

JP

AR

C?

�

neut

rino

beam

usi

ng 3

GeV

BN

L B

oost

er?

Boo

ster

100m

fl

ux

w/ 2

5m a

bsor

ber

Neu

trin

o F

lux

Boo

ster

flux

at 1

00m

:-

9.55

10

-9

�/PO

T/c

m2

- M

ean

E

� = 7

00M

eV

- R

equi

re 6

10

20 P

OT

tota

lat

the

100m

loca

tion

Exc

elle

nt

ener

gy d

istr

ibut

ion

for

the

s m

easu

rem

ent

- E

is h

igh

enou

gh...

-

larg

e el

astic

cro

ss s

ectio

n-

nucl

ear

phys

ics

unce

rtai

ntie

s sm

all

- an

d lo

w e

noug

h th

at b

ackg

roun

ds (

e.g.

pio

n pr

od.,

DIS

) sm

all

- lit

tle to

no

high

-ene

rgy

"tai

l"

- Lo

w D

uty

Fac

tor

also

=>

ver

y sm

all c

osm

ic b

ackg

roun

d

FIN

eSS

E: E

vent

Rat

es

Eve

nt R

ates

w

ith a

9 to

n(f

iduc

ial)

dete

ctor

, 6E

20 P

OT

@ 1

00m

on

Boo

ster

beam

ilne

~14

7k C

CQ

E ~

59k

NC

EL

sign

al

chan

nels

ar

e ~

60

% o

f tot

al

GE

AN

T-g

ener

ated

eve

nts

in s

cint

illat

or:

Q2 =

0.2

GeV

2 , E

� = 8

00M

eV

Tp~

100

MeV

, T

�~60

0 M

eV

pp

CC

NC

Mea

sure

men

t req

uire

men

ts:

-pro

ton

ener

gy

mea

sure

men

t d

own

to T p~

100M

eV

(R~

10cm

)

- pa

rtic

le ID

for

NC

/CC

/bac

kgro

und

sep

arat

ion

-ran

ge o

ut u

p to

1 G

eV m

uons

To

mea

sure

s

with

err

or

0.0

4, n

eed

R(N

C/C

C)

to ~

5% d

own

to Q

2 =0.

2 G

eV2

The

Muo

n R

ange

stac

k...

- to

trac

k an

d m

easu

re th

e en

ergy

of m

uons

The

Ver

tex

Det

ecto

r...

- to

pre

cise

ly tr

ack

low

-ene

rgy

prot

ons

Bar

tosz

ek E

ngin

eerin

g

Tw

o pa

rt d

etec

tor

neut

rinos

WLS

fibe

rs in

ver

tex

dete

ctor

(2.5

m)3

act

ive

liqui

d sc

intil

lato

r vo

lum

e-

1920

0 (8

0x80

x3)

1.5

mm

WLS

fibe

rs

on

3cm

spa

cing

with

3 o

rient

atio

ns

Ver

tex

Det

ecto

r si

de v

iew

:

liqui

d sc

intil

lato

r

WLS

fibe

r ar

ray

PM

Ts

+ o

n-bo

ard

elec

tron

ics

veto

reg

ion

Ver

tex

Det

ecto

r: a

larg

e, lo

w-t

hres

hold

, 3D

, tra

ckin

g de

tect

or

Con

side

red

a fe

w d

iffer

ent d

etec

tor

tech

nolo

gies

for

FIN

eSE

.....

Sci

ntill

ator

sta

ck

Sci

ntill

ator

bat

h

� optic

ally

isol

ated

sci

ntill

ator

bar

s w

ith w

ave

leng

th s

hifti

ng fi

bers

in e

ach

bar

� exis

ting

tech

nolo

gy -

- K

2K S

ciba

r de

tect

or

--

MIN

Os/

MIN

ER

vA

dete

ctor

s

� not o

ptic

ally

isol

ated

� info

rmat

ion

in 3

D

Lose

even

ts a

t hi

gh a

ngle

s/lo

w K

Ein

sci

ntill

ator

bar

type

det

ecto

rco

mpa

red

to

Sci

bath

Sci

bath

Pla

stic

sci

ntill

ator

st

ack

Rea

dout

with

Ham

mam

atsu

MA

PM

Ts

and

on b

oard

ele

ctro

nics

- si

mila

r sc

hem

e to

that

em

ploy

ed f

or S

TA

R e

ndca

p ca

lorim

eter

ST

AR

PM

T w

/fron

t-en

d el

ectr

onic

s

FIN

eSS

E D

etec

tor

Sim

ulat

ion

and

Rec

onst

ruct

ion

Ver

tex

Det

ecto

r

Muo

n R

ange

stac

k

GE

AN

T s

imul

ated

geo

met

ry

The

FIN

eSS

E d

etec

tor

has

been

si

mul

ated

usi

ng:

- N

UA

NC

E fo

r th

e ev

ent g

ener

atio

n-

GE

AN

T fo

r th

e de

tect

or s

imul

atio

n-

A H

ough

-tra

nsfo

rm-b

ased

r

econ

stru

ctio

n pa

ckag

e

FIN

eSS

E D

etec

tor

Sim

ulat

ion

and

Rec

onst

ruct

ion.

..

- E

~15

MeV

- ~

6

prot

ons

muo

ns

ener

gy

angl

e

ener

gy

angl

e

Sim

ulat

ion

and

reco

nstr

uctio

n of

50

-500

MeV

pro

tons

and

muo

ns:

FIN

eSS

E D

etec

tor

Sim

ulat

ion

and

Rec

onst

ruct

ion.

..

CC

QE

ev

ent

NC

p ev

ent

sim

ulat

ed h

its a

nd r

econ

stru

cted

trac

ks in

the

Ver

tex

Det

ecto

r

gene

rate

d

reco

nstr

ucte

d

XZ

YZ

YZ

XZ

fi

ber

hits

,(s

ize

� #

col

lect

ed)

Sim

ulat

ion

of R

(NC

/CC

) m

easu

rem

ent

NC

p an

d C

CQ

E

cuts

for

R(N

C/C

C)

mea

sure

men

t:

Res

ultin

gN

Cp

and

CC

QE

ef

ficie

ncie

sfr

om a

215

k ev

ent

sam

ple:

>>

Sim

ulat

ion

of R

(NC

/CC

) m

easu

rem

ent..

.

NC

p ev

ents

: C

CQ

E e

vent

s:

effic

ienc

yef

ficie

ncy

Q2

reso

lutio

nQ

2 re

solu

tion

= 0

.053

GeV

2 =

0.0

79 G

eV2

test

ed a

t the

Indi

ana

Uni

vers

ity

Cyc

lotr

on F

acili

ty in

sum

mer

200

3us

ing

low

inte

nsity

, 200

MeV

pro

tons

� 6x6

mm

2 bea

m p

rofil

e

� bea

m s

cann

ed v

ertic

ally

, ho

rizon

tally

, and

at a

ngle

to p

roto

type

30cm

Pro

toty

pe ''

Sci

bath

'' de

tect

or b

uilt

to te

st te

chno

logy

:

� 30cm

x 1

6 cm

x 1

6 cm

box

� fille

d w

ith s

cint

illat

or o

il

� 6x5

arra

y of

1.5

mm

mul

ti-cl

ad W

LS fi

ber

� read

out v

ia 1

6 an

ode

MA

PM

T

IUC

F 2

00 M

eV p

roto

nbe

am

Tes

t res

ults

:

posi

tion:

15

mm

FW

HM

Ang

le:

15

FW

HM

light

see

nfr

om n

ear

prot

ontr

acks

: 17

2 P

Es

m2 (eV

2)

sin2 2

FIN

eSS

E +

mB

ooN

E

n- p

even

t effi

cien

cy a

nd r

esol

utio

n(f

rom

NU

AN

CE

v3

sam

ple

of 1

00K

eve

nts)

146K

eve

nts

x 86

% a

ccep

tanc

eth

en x

85%

effi

cien

cy10

7K e

vent

s

CC

QE

NC

CC

NC

Coh

.42

0169

6819

68

1118

450

3555

711

5921

716

385

0.1

5919

36

raw

eve

nts

afte

r cu

tsef

ficie

ncy

(%)

Cut

s re

quire

:

� reco

nstr

uctio

n

� long

trac

ks� lo

w la

te li

ght

Sho

rt B

asel

ine

osci

llatio

n ph

ysic

s

Cro

ss s

ectio

n m

easu

rem

ents

:0 p

rodu

ctio

n: do

min

ant b

ackg

roun

d in

e

osci

llatio

n se

arch

es

n- p

0 : e

xist

ing

data

at

low

ene

rgy

on

ligh

t tar

gets

very

littl

e N

C

sing

le p

ion

prod

uctio

n da

ta

in

FIN

eSS

E

p p

0

in

FIN

eSS

E

Det

ecto

r co

sts:

Ver

tex

Det

ecto

r:36

tons

Sci

ntill

ator

oil

$185

Kta

nk a

nd fi

ber

grid

$209

KW

LS fi

ber

$119

K19

968

chan

nels

$434

K31

2 M

AP

MT

s $3

98K

Muo

n R

ange

stac

k:S

cint

illat

or a

nd fi

ber

$36K

34 M

AP

MT

s$4

3K21

76 c

hann

els

$45K

Iron

pla

nes

$327

K

Com

putin

g &

Inst

alla

tion

$254

K

Tot

al: 2

.8 M

illio

n (in

clud

ing

cont

inge

ncy)

Sci

bath

det

ecto

r de

sign

ed to

mea

sure

p el

astic

sca

tterin

g at

low

Q2

sim

ple,

low

cos

t det

ecto

r

Pre

sent

ly c

onsi

derin

g/te

stin

g w

ith d

iffer

ent t

arge

ts

�

scin

tilla

tor

oils

�

deut

erat

ed s

cint

illat

or

�

wat

er