lens measuring the neutrino luminosity of the sun
TRANSCRIPT
LE
NS
Me
as
uri
ng
th
e
Ne
utr
ino
Lu
min
os
ity
of
the
Su
n
Law
ren
ce B
erk
ele
y L
ab
Ph
ysic
s D
ivis
ion
's R
ese
arc
h P
rog
ress
Meeti
ng
M
ay 4
, 200
6
Ch
risti
an
Gri
eb
Vir
gin
ia T
ech
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Ru
ssia
:IN
R (
Mo
sc
ow
):I. B
ara
ba
no
v, L
. B
ezru
ko
v, V
. G
ure
nts
ov,
V. K
orn
oukhov, E
. Y
an
ovic
h;
INR
(T
roit
sk):
V. G
avri
n e
t al., A
. K
op
ylo
v e
t a
l.;
U.
S.:
BN
L:
A.G
arn
ov, R
. L
. H
ahn
, M
. Y
eh
;
U. N
. C
aro
lin
a:
A. C
ha
mpa
gne
;
OR
NL
:J. B
lackm
on
, C
. R
asco
, A
. G
alin
do-U
riba
rri;
Pri
nc
eto
n U
. :
J. B
enzig
er;
Vir
gin
ia T
ech
:Z
. C
ha
ng
, C
. G
rie
b, M
. P
itt,
R.S
. R
ag
ha
va
n, R
.B. V
oge
laa
r;
LE
NS
-So
l /
LE
NS
-Ca
l C
oll
ab
ora
tio
n(R
us
sia
-US
: 2
00
4-)
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
LE
NS
-So
l:�
Me
as
ure
th
e lo
w e
ne
rgy s
ola
r ν ννν
sp
ectr
um
(p
p,
7B
e, C
NO
)�
±~
3%
pp
-ν ννν
flu
x�
Ex
pe
rim
en
tal to
ol:
Ta
gg
ed
CC
Ne
utr
ino
Ca
ptu
re in
In
diu
m
LE
NS
-Cal:
�M
eas
ure
pre
cis
eB
(GT
) o
f 115In
CC
rea
cti
on
us
ing
M
Ci
51C
r n
eu
trin
o s
ou
rce
at
BA
KS
AN
�T
ag
ge
d ν ννν
-cap
ture
to
sp
ec
ific
le
ve
l o
f 1
15S
n�
No
te:
B(G
T)
= 0
.17
me
asu
red
via
(p
,n)
rea
cti
on
s
LE
NS
-In
diu
m:
SC
IEN
CE
GO
AL
{S
ne
eIn
e
11
5
s)4
.76
( t
agd
elay
edsi
gn
also
lar
11
5)
/(
++
+→
+
=
−−
43
42
1µ
τ
γγ
ν
Pre
cis
ion
Measu
rem
en
t o
f th
e N
eu
trin
o L
um
ino
sit
y o
f th
e S
un
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Ext
raord
inary
Neu
trin
o B
eam
Fre
e of
Charg
e
For
NE
UT
RIN
O P
HY
SIC
S:
•W
ELL D
EF
INE
D H
IGH
ES
T F
LU
X (
pp)
•F
LA
VO
R P
UR
E -ν
eon
ly
•LO
NG
ES
T B
AS
ELIN
E
•LA
RG
ES
T M
AS
S O
F H
IGH
DE
NS
ITY
•LO
WE
ST
EN
ER
GIE
S (
keV
to M
eV
)•
LO
W E
NE
RG
Y S
PE
CT
RU
M -
EN
ER
GY
DE
P.
EF
FE
CT
S
Best to
ols
for
investig
ating n
eutr
ino f
lavor
phen
om
en
a in
Vacu
um
and in M
att
er
For
AS
TR
OP
HY
SIC
S:
Best to
ol fo
r unpre
ced
ente
d lo
ok a
t how
a r
eal S
tar
work
s
-in
the p
ast, p
resent
and f
utu
re
So
lar
Ne
utr
ino
s
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
So
lar
Ne
utr
ino
s
•S
tan
dard
So
lar
Mo
del
•M
issin
g ν
e(C
l,
Ga, S
K, S
NO
)
•F
lavor
mix
ing
hap
pe
ns (
SN
O)
Wh
at
we k
no
w:
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
So
lar
Ne
utr
ino
s
•S
tandard
Sola
r M
ode
l
•M
issin
g ν ννν
e(C
l,
Ga, S
K,
SN
O)
•F
lavor
mix
ing
hap
pe
ns (
SN
O)
Wh
at
we k
no
w:
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
So
lar
Ne
utr
ino
s
nu
cl-e
x/0
50
20
21
•S
tandard
Sola
r M
ode
l
•M
issin
g ν
e(C
l,
Ga, S
K, S
NO
)
•F
lavo
r m
ixin
g
hap
pen
s (
SN
O)
Wh
at
we k
no
w:
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Ne
utr
ino
Mix
ing
Pa
ram
ete
rs
ad
d a
nti-n
eu
trin
os (
Ka
mla
nd
)
(assu
me
s C
PT
): ∆
m122,
θ
MS
W e
xpla
natio
n:
So
lar
da
ta: ∆
m122,
θ
nucl-
ex/
0502021
MS
W-L
MA
is b
ased o
n t
he c
om
bin
ed
results f
rom
man
y c
om
plim
enta
ry e
xperim
ents
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Thre
e m
ain
contr
ibutio
ns:
pp
0.9
25
7B
e0.0
75
8B
0.0
000
9
So
lar
ν ννν-L
um
ino
sit
y
•8B
(SK
, S
NO
)
•7B
e +
8B
(C
l)
•pp +
7B
e +
8B
(G
a)
•7B
e
(Bore
xin
o,
Kam
lan
d-f
utu
re)
�in
princip
le c
an d
educe p
p-ν
flu
x
Pro
ble
m: yie
ld w
eig
hte
d b
y c
ross-s
ection
�poor
sensitiv
ity o
f G
alli
um
experim
ents
to p
p-ν
�
pp
7B
e
8BCN
O
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
With
ad
de
d L
um
ino
sity c
on
str
ain
t:
�
With
ou
t Lu
min
osity c
on
str
ain
t:
Exp
erim
en
talsta
tus –
No
usefu
l co
nstr
ain
t!
So
lar
Lu
min
os
ity
: N
eu
trin
o v
s. P
ho
ton
()
() σ
σν
ν3
7.0
6.0
1
2.0
3.0
(in
ferr
ed)
4.1
/=
hL
L
1/
=ν
νh
LL
02
.0
01
.1
/±
=−
SS
Mp
pp
pφ
φ
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
pp
, 7B
e ν
-flu
xe
s a
t e
art
h ±
3%
�
Me
asu
red
Ne
utr
ino
Lu
min
osity ~
4%
�U
ltim
ate
te
st
of
the
Ne
utr
ino
& t
he
Su
n
�T
est
so
lar
mo
de
l a
nd
ne
utr
ino
oscill
atio
ns w
ith
on
e m
ea
su
rem
en
t
�A
str
op
hysic
s:
L
ν>
Lh
νIs
th
e s
un
ge
ttin
g h
ott
er?
Lν
< L
hν
Co
olin
g o
r a
su
b-d
om
ina
nt
no
n-n
ucle
ar
so
urc
e o
f e
ne
rgy in
th
e s
un
?
�P
recis
ion
va
lue
s o
f θ
12, θ
13
�S
teri
le N
eu
trin
os?
NE
W S
CIE
NC
E -
Dis
co
ve
ry P
ote
nti
al
of
LE
NS
In 5
years
(w
ith
ν ννν-
so
urc
e c
ali
bra
tio
n):
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
•T
est
of
MS
W L
MA
ph
ysic
s-
no s
pecific
ph
ysic
s p
roof yet !
Pee(p
p)=
0.6
(va
c. osc.)
Pee(8
B)=
0.3
5 (
ma
tter
osc.)
, a
s p
red
icte
d?
•N
on
-sta
nd
ard
Fu
nd
am
en
tal
Inte
racti
on
s?
Str
on
g d
evia
tio
ns fro
m th
e L
MA
pro
file
of P
ee(E
)?
•M
ass V
ary
ing
Neu
trin
os?
(s
ee
ab
ove)
•C
PT
In
vari
an
ce o
f N
eu
trin
os?
so
fa
r L
MA
on
ly fro
m K
am
lan
d, is
th
is tru
ea
lso
for
?
•R
SF
P/
Nu
mag
neti
c m
om
en
ts
Tim
e V
ari
ation
of pp
and
7B
e s
ign
als
? (
No V
ar.
of
8B
nus
!)
(Chauhan
et al JH
EP
2005)
NE
W S
CIE
NC
E -
Dis
co
ve
ry P
ote
nti
al
of
LE
NS
AP
S N
u S
tud
y 2
004� ���
Lo
w E
ne
rgy S
ola
r N
u S
pe
ctr
um
: o
ne
of
3 P
rio
riti
es
In t
he f
irst
2 y
ears
(n
o c
alib
rati
on
wit
h ν ννν
-so
urc
e n
eed
ed):
eν
Lo
w E
ne
rgy
Ne
utr
ino
s:
On
ly w
ay t
o
an
sw
er
these
q
ue
sti
on
s !
eν
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Sc
ien
ce
fro
m R
ela
tive
Flu
xe
s
MS
W-L
MA
Pro
file
Non-s
tan
dard
inte
ractions
Mass-v
ary
ing n
eutr
inos
Devia
tions f
rom
sta
nd
ard
surv
iva
l pro
ba
bili
ty in v
ario
us
ne
w s
cena
rios
ee
Pν
ν→
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Ta
g:
De
laye
d e
mis
sio
n o
f (e
/γ)+
γT
hre
sh
old
:11
4 k
eV�
pp
-ν’s
115In
ab
un
da
nc
e:
~ 9
6%
Ba
ck
gro
un
d C
ha
lle
ng
e:
•In
diu
m-t
arg
et is
ra
dio
active
! (τ
= 6
x10
14
y)
•115In
β-s
pe
ctr
um
overl
aps
pp
-νsig
na
l
Ba
sic
ba
ck
gro
un
d d
isc
rim
ina
tor:
Tim
e/s
pace
co
incid
en
ce
ta
gT
ag
en
erg
y: E
ν-t
ag
= Eβ
ma
x+
11
6 k
eV
7B
e, C
NO
& L
EN
S-C
al s
ign
als
no
t aff
ecte
d b
y In
diu
m-B
gd
!
LE
NS
-In
diu
m:
Fo
un
dati
on
s
CC
ν ννν-c
ap
ture
in
11
5In
to
excit
ed
iso
meri
c level in
11
5S
n
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
pp
7B
e
pep
CN
O
S/B
=1
S/B
=3
Ra
nd
om
co
inc
. B
gd
Sig
nal (τ
τ τ τ =
4.7
6 µ
s)
LE
NS
-So
l S
ign
al
=S
SM
(lo
wC
NO
) +
LM
Ax
Dete
cti
on
Eff
icie
nc
y ε εεε
pp
:ε εεε
= 6
4%
7B
e:
ε εεε=
85%
pep
:ε εεε
= 9
0%
�R
ate
: p
p 4
0 /
y /
t In
�2000 p
p e
v.
/ 5
y� ���
±2.5
%�
Desig
n G
oal:
S/N
≥3
Exp
ecte
d R
esu
lt:
Lo
w E
nerg
y S
ola
r ν ννν-S
pectr
um
Sig
na
l e
xtr
ac
ted
fr
om
fit
of
co
inc
. ti
me
sp
ec
tru
mto
is
om
eri
c e
xp
. d
eca
y +
Ra
nd
om
Co
inc
. B
gd
Ac
ce
ss t
o p
p
sp
ectr
al
Sh
ap
efo
r th
e f
irst
tim
e
De
lay t
ime
In-B
gd
Fit
ted
So
lar
Nu
Sp
ectr
um
(Sig
nal+
Bg
d)
/5 y
r/10 t
In
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
In-L
EN
S:
Stu
die
d W
orl
dw
ide
Sin
ce
19
76
!
Dra
ma
tic
Pro
gre
ss
in
20
05
( M
PIK
Talk
at D
PG
03/2
004)
Cu
bic
Latt
ice N
on
-hyb
rid
(In
LS
on
ly)
InL
S: 8
% In
,L
(1/e
)>1
0m
,9
00
p
e/M
eV
Ma
ss In
LS
: 12
5t to
19
0t
In: 1
0t-
15
tfo
r 1
97
0 p
p ν
’s /5
y
PM
Ts: 13
,300
(3”)
-6
,500
( 5”)
pp
-νD
ete
ction
Effic
ien
cy: 6
4-4
5%
S/N
~3 (A
LL
In
deca
y m
ode
s)
Sta
tus F
all 2
003
� ���S
tatu
s F
all 2
005
•In
Liq
. S
cin
t.
•N
ew
De
sig
n
•B
gd
Str
uctu
re
•N
ew
An
aly
sis
Str
ate
gy
Lo
ng
it.
mo
du
les +
hyb
rid
(In
LS
+ L
S)
InL
S: 5
% In
,L
(1/e
)=1
.5m
,2
30
pe
/Me
V
To
tal m
ass L
S: 6
00
0t
In: 3
0tfo
r 190
0 p
p ν
’s /5
y
PM
Ts: ~
20
0,0
00
pp
-νD
ete
ction
Effic
ien
cy: ~
20
%
S/N
~1
(sin
gle
de
ca
y B
S o
nly
)
~1
/ 2
5 (
All
In d
eca
y m
od
es)
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
1. In
diu
m c
once
ntr
atio
n ~
8%
wt
(hig
her
may b
e v
iab
le)
2. S
cin
tilla
tio
n s
igna
l e
ffic
ien
cy
(work
ing v
alu
e):
90
00
hν/M
eV
3. T
ransp
are
ncy a
t 4
30
nm
:L(1
/e)
(work
ing
va
lue):
10
m4
. C
hem
ica
l an
d O
ptica
l S
tab
ililty: a
t le
ast 2
ye
ars
5. In
LS
Ch
em
istr
y -
Rob
ust
Basic
Bell L
ab
s P
ate
nt,
file
d 2001, aw
ard
ed
2004
1
10
10
0
10
00
10
00
0
05
01
00
15
02
00
25
0
8%
In
LS
(PC
:PB
D/M
SB
)10800 hν
/ M
eV
BC
505 S
td
12000 h
ν ννν/M
eV
In 8
%-p
ho
to
Lig
ht
Yie
ld fr
om
Co
mp
ton
ed
ges
of
13
7C
s γ γγγ
-ra
y S
pectr
a
-0.0
05
0.0
00
0.0
05
0.0
10
0.0
15
0.0
20
0.0
25
0.0
30
35
03
90
43
04
70
51
05
50
59
06
30
67
0λ λλλ
(nm
)
Norm. Absorbance in 10 cm
L(1
/e)(
InL
S 8
%)
~ L
(PC
Neat)
!
ZV
T39:
Ab
s/1
0cm
~0.0
01;
� ���L
(1/e
)(n
om
inally)
>>
20 m
InL
S
PC
Neat
Ind
ium
Liq
uid
Sc
inti
lla
tor
Sta
tus
Mil
esto
nes u
np
reced
en
ted
in m
eta
l L
S t
ech
no
log
y
LS
tech
niq
ue r
ele
van
t to
m
an
y o
ther
ap
pli
cati
on
s
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
3D
Dig
ita
l L
oc
aliza
bilit
yo
f H
it w
ith
in o
ne
cu
be
�~
75m
m p
recis
ion
vs. 600
mm
(±2σ
) by T
OF
in
lo
ngitu
din
al m
od
ule
s�
x8
le
ss
vert
ex v
ol. �
x8
le
ss r
an
dom
co
inc. �
Big
effect on
Ba
ckgro
un
d�
Hit lo
ca
lizab
ility
in
de
pe
nd
en
t o
f e
ve
nt e
nerg
y
Test of
double
foil
mirro
r in
liq
. @
~2bar
Ne
w
De
tec
tor
Co
nc
ep
t -
Th
e S
cin
till
ati
on
La
ttic
e C
ha
mb
er
Lig
ht
pro
pag
ation
in G
EA
NT
4C
once
pt
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
10
0 k
eV
eve
nt
in 4
x4
x4
m c
ub
e,
12
.5c
m c
ell
s
Perf
ect
op
tica
l su
rfaces
: 20
pe
(per
ch
an
nel)
Ro
ug
h o
pti
cal su
rfaces :
20
% c
han
ce o
f n
on
-id
eal
op
tics a
t e
very
refl
ecti
on
12 p
ein
vert
ex +
~8 p
ein
“h
alo
”
Co
nclu
sio
n -
Effe
ct of n
on
-sm
oo
th s
eg
me
nta
tio
n fo
ils:
•N
o lig
ht lo
ss -
(All
ph
oto
ns in
hit a
nd
ha
lo c
ou
nte
d)
•H
it lo
ca
liza
tio
n a
ccu
racy v
irtu
ally
un
affe
cte
d
Fo
il S
urf
ac
e R
ou
gh
ne
ss
an
dIm
pa
ct
on
th
e H
it D
efi
nit
ion
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Lig
ht
los
s b
y M
ult
iple
Fre
sn
el
Re
fle
cti
on
4x
4x
4m
Cu
be
Ab
so
rpti
on
le
ng
th =
10
m
Up
pe
r li
mit
~1
70
0p
e/M
eV
(L
=1
0m
) -
rea
ch
via
an
tire
fle
cti
ve
co
ati
ng
on
fil
ms
?
Ad
op
t
1020 p
e/M
eV
7.5
cm
cell
s
Ph
oto
ele
ctr
on
yie
ld v
ers
us
nu
mb
er
of
ce
lls:
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Sig
nal R
eco
nstr
uction
•E
vent
loca
lization r
elie
s o
n
PM
T h
it p
attern
(N
OT
on
sig
na
l tim
ing)
•A
lgorith
m f
inds b
est
solu
tion
for
event patt
ern
to m
atc
h
PM
T s
igna
l patt
ern
•S
yste
m is o
verd
ete
rmin
ed,
hard
ly a
ffecte
d b
y
unch
an
ne
lled
light
•T
imin
g info
rmation +
positio
n
�show
er
str
uctu
re
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Ind
ium
Ra
dio
ac
tiv
ity B
ac
kg
rou
nd
BG
DE
(ν ννν)
-114 k
eV
(e1)
116 k
eV
(g2)
498 k
eV
(g3)
115In
SIG
NA
L11
5In
115S
n
β0
+ n
γ γγγ(B
S)
(Em
ax
= 4
99 k
eV
)498 k
eV
*Ca
tta
do
rie
t a
l: 2
003
β1
(Em
ax<
2 k
eV
)(b
= 1
.2x10
-6)*
115S
n
e/γ γγγ
γ γγγ
Mu
ltip
le 1
15In
d
eca
ys s
imu
late
ta
g c
an
did
ate
in
m
an
y w
ays
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Ind
ium
Ra
dio
ac
tiv
ity B
ac
kg
rou
nd
n 1
15In
β βββ–d
ecays i
n (
qu
asi)
pro
mp
t co
incid
en
ce p
rod
uce a
tag
:
Basic
tag
can
did
ate
: S
ho
wer
near
vert
ex (
Nh
it≥
3)
-ch
an
ce c
oin
cid
en
t w
ith
11
5In
βin
vert
ex
Typ
e A
:A
1
= β
+ B
S γ γγγ
(Eto
t=
498 k
eV
) (
x1)
A2
= γ γγγ
(498 k
eV
)(x
1)
Typ
eB
:2 β
-deca
ys (
x10
-8)
Typ
e C
:3 β
-deca
ys (
x10
-16)
Typ
e D
:4 β
-deca
ys
(x10
-24)
Ba
ckg
rou
nd
cate
go
ries
Str
ong s
uppre
ssio
n v
ia e
nerg
y
Suppre
ssio
n v
ia t
ag t
opolo
gy
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Da
ta:
Ma
in S
imu
lati
on
of
Ind
ium
Eve
nts
wit
h G
EA
NT
4•
~ 4
x1
06
In d
eca
ys in
one
ce
ll ce
nte
red
in
~3m
3vo
lum
e (
2-3
da
ys P
C tim
e)
•A
na
lysis
tri
als
with
ch
oic
e o
f p
e/M
eV
and
cut p
ara
me
ters
(5
’/tri
al)
Ind
ium
Ba
ck
gro
un
d S
imu
lati
on
s a
nd
An
aly
sis
An
aly
sis
Str
ate
gy
•P
rim
ary
se
lectio
n -
tag
can
did
ate
sho
we
re
ve
nts
with
Nh
it≥
3•
Cla
ssify a
ll e
ligib
le e
ve
nts
(N
hit≥
3)
accord
ing to N
hit
•O
ptim
ize
cu
t co
nd
itio
ns
indiv
idu
ally
for
each
Nh
itcla
ss
Ma
in C
uts
•T
ota
l e
nerg
y: g
2+
g3
•T
ag
top
olo
gy: D
ista
nce o
f lo
ne
βfr
om
sho
wer
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Fin
al
Resu
lt:
Ove
rall
Backg
rou
nd
su
pp
resio
n>
10
11
At
the c
ost
of
sig
nal lo
ss b
y a
fa
cto
r ~
1.6
�T
ag
an
aly
sis
mu
st su
ppre
ss B
ackgro
un
d b
y ~
2x1
04
�S
uffic
ien
t to
gen
era
te ~
4x1
06
n-t
up
les
for
the
an
aly
sis
Ba
ck
gro
un
d S
up
pre
ss
ion
-
An
aly
sis
of
Ta
g C
an
did
ate
s
79 x
10
11
62.5
RA
W
8.3
54.0
0.5
713 ±
0.6
40
+T
ag
to
po
log
y
293
4.5
0.5
7306
44
+T
ag
En
erg
y =
620 k
eV
1.4
x 1
03
2.5
x 1
03
2.6
x 1
04
2.9
6 x
10
446
+ ≥
3 H
its i
n t
ag
sh
ow
er
1.9
x 1
05
2.8
x 1
03
8.3
x 1
04
2.7
6 x
10
550
Vali
d t
ag
(E
nerg
y,
Bra
nch
ing
, S
ho
wer)
in
Sp
ace/T
ime
dela
yed
co
inc. w
ith
pro
mp
t e
ven
t in
vert
ex
Bg
dB
/y /
t In
Bg
dA
2
/y /
t In
Bg
dA
1
/y /
t In
Bg
dto
t
/y /
t In
Sig
nal
/y /
t In
“F
ree
”
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Scin
tillato
r p
rop
ert
ies:
•In
LS
:8%
In
•L(1
/e)
= 1
000cm
•LY
(In
LS
) =
9000 h
ν/M
eV
Dete
cto
r D
esig
n:
Typ
ica
l L
EN
S-S
ol
De
sig
n F
igu
res
of
Me
rit
–W
ork
in
Pro
gre
ss
913
Bg
d
/t I
n/y
6250
(5”)
1330
0
(3”)
PM
T
190
125
M (In
LS
) to
n
15.3
2.9
26
40
%950
5125
10
340
64
%1000
475
M (In
)*
ton
S/N
pp
-ν ννν
/t I
n/y
Det
Eff
%
Pe
yie
ld
/MeV
Cu
be
siz
e
m
Cell
S
ize
mm
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
5”P
MT
Pas
siv
eS
hie
ldM
irro
r5”
PM
TP
as
siv
eS
hie
ldM
irro
r
Op
t s
eg
me
nta
tio
n c
ag
e
InL
S
50
0 m
m
InL
S
LS
En
ve
lop
e
50
0 m
m
•In
LS
: 1
28
L
•P
C E
nve
lop
e :
20
0 L
•1
2.5
cm
pm
t’s :
108
MIN
ILE
NS
Fin
al T
est dete
cto
rfo
r LE
NS
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
MIN
ILE
NS
: G
lob
al
test
of
LE
NS
R&
D
•T
est
dete
cto
r te
ch
no
log
y�
Larg
e S
cale
InLS
�D
esig
n a
nd c
onstr
uction
•T
est
backg
rou
nd
su
pp
ressio
n o
f In
rad
iati
on
s b
y 1
0-1
1
•D
em
on
str
ate
In
so
lar
sig
nald
ete
cti
on
in t
he p
resen
ce o
f h
igh
backg
rou
nd
Dir
ect
blu
e p
rin
t fo
r fu
ll s
cale
LE
NS
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Pro
xy p
p n
u e
ve
nts
in
M
INIL
EN
S f
rom
co
sm
og
en
ic
115In
(p,n
)115S
n is
om
ers
•P
reta
gg
ed
via
µ µµµ, p
tra
cks
•P
os
t ta
gg
ed
via
n a
nd
23
0 µ µµµ
s d
ela
y
� ���G
old
pla
ted
10
0 k
eV
eve
nts
(p
rox
y p
p),
Ta
gg
ed
by s
am
e c
as
ca
de
as
In
-ν νννeve
nts
� ���D
em
on
str
ate
In
- ν νννS
ign
al
dete
cti
on
eve
n in
MIN
ILE
NS
Pro
xy
pp
-ν νννe
ve
nts
in
MIN
ILE
NS
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Ne
xt
Ste
pT
est o
f a
ll th
e c
oncep
ts a
nd
th
e tech
no
log
y d
eve
lop
ed
so far:
MIN
I-L
EN
S-
130
lite
r In
LS
scin
tilla
tio
n la
ttic
e d
ete
cto
r
Su
mm
ary
●In
LS
Tech
no
log
y●
Dete
cto
r D
esig
n●
Backg
rou
nd
An
aly
sis
�B
asic
feasib
ilit
y o
f In
-LE
NS
-So
l secu
re●
extr
ao
rdin
ary
su
pp
res
sio
n o
f In
backg
rou
nd
(all
oth
er
Bg
dso
urc
es n
ot
cri
tical)
●S
cin
till
ati
on
Ch
am
ber
–In
LS
on
ly
●H
igh
dete
cti
on
eff
icie
ncy � ���
low
dete
cto
r m
ass
●G
oo
d S
/N
Majo
r b
reakth
rou
gh
s:
IN S
IGH
T:
Sim
ple
Sm
all L
EN
S (
~1
0 t
In
/1
25
t In
LS
)
LE
NS
Christian G
rieb,
Virgin
ia T
ech,
Ma
y 2
006
Ad
dit
ion
al S
lid
es