tevatron commissioning and operating experience
TRANSCRIPT
Teva
tron
Com
mis
sion
ing
and
Ope
rati
ng E
xper
ienc
eM
ike
Mar
tens
Teva
tron
Dep
t, F
erm
ilab
Janu
ary
24, 2
005
Jan
24, 2
005
Teva
tron
Expe
rienc
e2
22 y
ears
of
Teva
tron
Wit
h a
few
hicc
ups…
Dam
aged
spo
ol p
iece
Rust
ed m
agne
t st
ands
and
sign
s of
agi
ng …
Jan
24, 2
005
Teva
tron
Expe
rienc
e3
…bu
t al
so s
ucce
ssAcc
eler
ator
Division
Wor
ld R
ecor
dsfo
r pr
oton
/ant
ipro
ton
collide
rop
erat
ions
:
•980
GeV
prot
on/a
ntip
roto
n en
ergy
•1.
05 E
32 [1/
cm2 /
sec]
Init
ial L
umin
osit
y(J
anua
ry 2
7, 2
005)
•18
.6 [1/
pb]i
nteg
rate
d lu
min
osit
y/we
ek•24
6 E1
0pb
ars
stor
ed in
acc
umul
ator
The
ISR
ache
ived
an in
itia
l pro
ton-
prot
on c
ollid
ing
beam
lum
inos
ity
of 1
.4E3
2 [1
/(cm
**2
sec)
] at
31
GeV
in 1
982.
Jan
24, 2
005
Teva
tron
Expe
rienc
e4
A S
ampl
e of
New
Res
ults
fr
om C
DF
and
DØ
Reco
rded
Lum
~ 0.
5 fb
-1
-1
Ana
lyze
d ~
0.25
fb
With
2 fb
-1,
expe
ctδm
top~
2 Ge
V; δ
mW
~30
MeV
; Pre
c. M
eas.
Obs
erva
tion
of s
ingl
e to
p pr
oduc
tion
SUSY
??
ED
??
Reco
rded
Lum
~ 0.
5 fb
-1
Ana
lyze
d ~
0.25
fb-
1
With
2 fb
-1,
expe
ctδm
top~
2 Ge
V; δ
mW
~30
MeV
; Pre
c. M
eas.
Obs
erva
tion
of s
ingl
e to
p pr
oduc
tion
SUSY
??
ED
??
Zee
Weν
Jan
24, 2
005
Teva
tron
Expe
rienc
e5
Fixe
d Ta
rget
and
Col
lider
Ope
rati
ons
1980
1985
1990
1995
2000
2005
Fixe
d ta
rget
ope
rati
ons
Firs
t be
am in
ject
edA
ccel
erat
ed t
o 51
2Re
sona
nt e
xtra
ctio
n
Firs
t 80
0 Ge
V be
am
Firs
t p-
pbar
col
lisio
ns
at C
DF
Peak
Lum
inos
ity
2.4
E31
cm-2
s-1
Peak
Lum
inos
ity
1 E2
9 cm
-2s-
1
Peak
Lum
inos
ity
1.05
E32
cm-2
s-1
Inst
alla
tion
Colli
der
Run
IICo
llide
r Ru
n I
Jan
24, 2
005
Teva
tron
Expe
rienc
e6
Fixe
d Ta
rget
and
Col
lider
Ope
rati
ons
Inst
alla
tion
1980
1985
1990
1995
2000
2005
Fixe
d ta
rget
ope
rati
ons
Colli
der
Run
ICo
llide
r Ru
n II
Firs
t be
am in
ject
edA
ccel
erat
ed t
o 51
2Re
sona
nt e
xtra
ctio
n
Firs
t 80
0 Ge
V be
am
Firs
t p-
pbar
col
lisio
ns
at C
DF
Peak
Lum
inos
ity
2.4
E31
cm-2
s-1
Peak
Lum
inos
ity
1.05
E32
cm-2
s-1
Peak
Lum
inos
ity
1 E2
9 cm
-2s-
1
Rest
of
talk
will
foc
us o
n th
e fi
rst
5 ye
ars
and
the
late
st 5
yea
rs
Jan
24, 2
005
Teva
tron
Expe
rienc
e7
Fixe
d Ta
rget
and
Col
lider
ope
rati
ons
•Ju
ne 1
981:
In
stallation
of
Teva
tron
Beg
ins
•Ju
ne 2
, 19
83:
Firs
t In
ject
ed B
eam int
o th
e Te
vatr
on•
July 3
, 19
83:
Firs
t Acc
eler
ated
Bea
m t
o 51
2 Ge
V•
Aug
2, 19
83:
Reso
nant
Ext
ract
ion
to S
witc
hyar
d•
Feb
1984
: Fi
rst
800
GeV
beam
in
Teva
tron
. •
Oct
13,
198
5:
Firs
t p-
pbar
collis
ions
at
CDF
•19
88-8
9:
Collide
r Ru
n•
1989
-91:
Fixe
d Ta
rget
•19
91-9
6:
Collide
r Ru
n I
•Se
p 19
96-9
7:
Fixe
d Ta
rget
Run
. •
June
200
0:
Star
t of
Collid
er R
un I
I co
mmission
ing.
•M
arch
1, 20
01: Be
gin
Collide
r Ru
n II
of
the
Teva
tron
.
Jan
24, 2
005
Teva
tron
Expe
rienc
e8
My
Expe
rien
ce•
14 y
ears
inth
e Te
vatr
on G
roup
•D
ivid
e m
y ti
me
–A
ccel
erat
or P
hysi
cs a
nd T
evat
ron
Impr
ovem
ent
–M
ain
Cont
rol R
oom
Ope
rati
ons
•Ro
les
–Co
llide
r Co
mm
issi
onin
g Te
am M
embe
r–
Teva
tron
Coo
rdin
ator
–Fe
rmila
b Ru
n Co
ordi
nato
r
•W
itne
ssed
–Co
mm
issi
onin
g of
Col
lider
Run
I
–Re
-com
mis
sion
ing
of F
ixed
Tar
get
Run
–Pl
anni
ng a
nd C
omm
issi
onin
g o
f Ru
n II
Jan
24, 2
005
Teva
tron
Expe
rienc
e9
Teva
tron
Com
mis
sion
ing
(198
3)•
Fixe
d Ta
rget
com
mission
ing
was
a su
cces
s!
•Su
cces
s wa
s at
trib
uted
to
lots
of
prep
arat
ion
•Th
is p
art
of t
he t
alk
deri
ves
from
com
men
ts &
pap
ers
by H
elen
Ed
ward
s, D
on E
dwar
ds, R
olJo
hnso
n, B
ob M
au, D
ave
Aug
usti
ne,
Dav
e Fi
nley
, Mik
e H
arri
son,
etc
, …
•U
sefu
l Ref
eren
ce:“T
he E
nerg
y Sa
ver
Test
and
Com
mission
ing
Histo
ry”,
Hel
en E
dwar
ds, 1
2th
Inte
rnat
iona
l Con
fere
nce
on
Hig
h-En
ergy
Acc
eler
ator
s, 1
983
“Non
e of
us
who
had
gone
thr
ough
the
sta
rtup
of
the
Mai
n Ri
ng in
197
1-72
wan
ted
an e
xper
ienc
e lik
e th
at a
gain
, so
prep
arat
ion
was
near
-met
icul
ous.
” –D
on E
dwar
ds
Jan
24, 2
005
Teva
tron
Expe
rienc
e10
Firs
t Co
mm
issi
onin
g•
Com
mis
sion
ing
Step
s–
Mag
net
Stri
ng T
ests
: Man
y fr
om 1
977
onwa
rds
–“3
/4 A
-sec
tor
Test
” (1/
8 of
rin
g)
: Six
mon
ths
in 1
982
–In
stal
lati
on S
hutd
own
: Eig
ht m
onth
s in
82/
83–
Powe
r Te
stin
g an
d 51
2 Ge
V ra
mp
: Fou
r m
onth
s in
198
3 –
Firs
t In
ject
ed b
eam
to
extr
acti
on
: Two
mon
ths
in 1
983
•Co
mpa
riso
n be
twee
n Be
am a
nd M
agne
t M
easu
rem
ents
•O
pera
tion
al E
xper
ienc
e an
d Re
liabi
lity
Jan
24, 2
005
Teva
tron
Expe
rienc
e11
Mag
net
Stri
ng T
ests
•M
agne
t St
ring
Tes
ts (1
978)
–Fi
ve h
alf-
cells
inst
alle
d an
d co
oled
dow
n–
100
GeV
beam
thr
ough
500
fee
t of
cry
ogen
ic m
agne
ts
–Le
arne
d ab
out
quen
ches
fro
m in
ject
ion
•“3
/4 A
-sec
tor
Test
” re
pres
enting
1/8
of
ring
(19
82)
–Te
sted
ful
l pot
enti
al o
f cr
yosy
stem
s an
d pr
essu
re p
ipin
g,
cont
rols
, pow
er s
uppl
ies,
vol
tage
to
grou
nd, a
nd q
uenc
h pr
otec
tion
sy
stem
s
Resu
lted
in
relia
ble
enou
gh o
pera
tion
dur
ing
beam
sta
rt-u
p
Six
mon
ths
of t
esti
ng
“The
impo
rtan
ce o
f th
e te
st e
ffor
ts c
arri
ed o
ut d
urin
g th
e En
ergy
Sav
er R
& D
and
con
stru
ctio
n ph
ase
cann
ot b
e em
phas
ized
eno
ugh”
–fr
om p
aper
by
H. E
dwar
ds
Jan
24, 2
005
Teva
tron
Expe
rienc
e12
Stan
dard
Tev
atro
n Ce
llQ
uadr
upol
esD
ipol
esF
D
774
Dip
ole
222
Qua
drup
ole
206
Corr
ecto
r pa
ckag
e26
Feed
can
22By
pass
27
Turn
-aro
und
box
11O
ther
----
----
----
----
----
-12
93
Cryo
Compo
nent
s
Corr
ecto
r Pa
ckag
es C
onta
in:
Trim
qua
drup
oles
T:Q
F fo
cuss
ing
circ
uit
T:Q
D d
efoc
ussi
ngci
rcui
tT:
SQ s
kew
quad
cir
cuit
Trim
sex
tupo
le c
orre
ctor
sT:
SF a
t fo
cuss
ing
loca
tion
sT:
SD a
t de
focu
ssin
glo
cati
ons
Dip
ole
corr
ecto
rs
Jan
24, 2
005
Teva
tron
Expe
rienc
e13
Inst
alla
tion
`80
`81
`82
`83¾
AEFDCB
15 m
onth
s to
tal t
ime
peri
od
Peak
of
54 p
eopl
e to
tal
Six
mon
ths
from
tim
e m
agne
ts r
eady
till
st
ring
was
fin
ally
col
d
~3 m
onth
s fr
om f
inal
leak
ch
eck
to c
ryog
enic
s op
erat
ions
Jan
24, 2
005
Teva
tron
Expe
rienc
e14
Inst
alla
tion
•H
andl
ing
Dam
age
–3%
of
dipo
les
with
vac
uum
leak
s–
13%
of
corr
ecto
rs a
nd s
peci
al c
ompo
nent
s wi
th v
acuu
m le
aks
–Ev
en t
houg
h de
vice
s we
re le
aked
che
cked
bef
ore
inst
alla
tion
•H
igh
failu
re r
ate
of v
acuu
m s
eals
(>25
%)
–N
ew t
ype
of s
eal w
as u
sed
and
failu
re r
ate
was
insi
gnif
ican
t
•La
rges
t ef
fort
wen
t in
to in
terf
ace
conn
ecti
on a
nd le
ak c
heck
–Fo
ur s
plic
e co
nnec
tion
s–
Four
sm
all f
lang
e co
nnec
tion
s (b
eam
pip
e an
d cr
yo)
–O
ne la
rge
flan
ge c
onne
ctio
n–
Estimat
ed 5
0 man
hou
rs p
er int
erfa
ce X
120
0 inte
rfac
es
Jan
24, 2
005
Teva
tron
Expe
rienc
e15
Prob
lem
s re
quir
ing
warm
-up
•Tw
o cr
yose
ctio
ns h
ad le
aks
beca
use
of b
roke
n ce
ram
ics
•O
ne d
ipol
e wi
th t
urn-
to-t
urn
shor
t –
The
shor
t di
sapp
eare
d wh
en c
olla
red
coil
was
rem
oved
fro
m
cryo
stat
•Tw
o sp
lices
of
the
powe
r bu
s we
re n
ot s
olde
red
duri
ng
inst
alla
tion
•Si
x be
am d
etec
tors
wer
e in
the
wro
ng c
onfi
gura
tion
•Fi
ve b
eam
det
ecto
rs h
ad in
tern
ally
bro
ken
conn
ecti
ons
•Th
ree
corr
ecto
r m
agne
ts w
ith
low
impe
danc
e to
gro
und
•Le
aks
at e
ight
loca
tion
s re
quir
ed a
ddit
iona
l ext
erna
l pum
ping
Jan
24, 2
005
Teva
tron
Expe
rienc
e16
Beam
Tes
t an
d Co
mm
issi
onin
g O
ne m
onth
fro
m f
irst
inje
ctio
n to
512
GeV
. (21
0 ho
urs
of
avai
labl
e up
tim
e)
Thre
e we
eks
of b
eam
m
easu
rem
ents
(165
hou
rs o
f up
tim
e)
Seve
ral d
ays
for
extr
acti
on--
----
----
----
----
----
----
----
----
---
Two
mon
ths
from
fir
st in
ject
ion
till
reso
nant
ext
ract
ion.
Jan
24, 2
005
Teva
tron
Expe
rienc
e17
Ape
rtur
e Re
stri
ctio
ns
•A
t st
artu
p 3
aper
ture
res
tric
tion
s fo
und
–Er
ror
in b
eam
pip
e de
sign
–W
ad o
f pa
per
in t
he b
eam
tub
e–
Bum
ped
arou
nd a
n un
know
n ap
ertu
re r
estr
icti
on.
•BP
M/B
LM’s
cruc
ial f
or lo
cati
ng a
pert
ure
rest
rict
ions
–O
ne t
urn
posi
tion
and
inte
nsit
y in
form
atio
n–
Self
-tri
gger
ing
on b
eam
inte
nsit
y–
Circ
ular
buf
fer
mem
ory
halt
ed o
n an
abo
rt
Jan
24, 2
005
Teva
tron
Expe
rienc
e18
Com
pari
son
to M
agne
tic
Mea
sure
men
ts•
Mea
sure
d Tu
nes ν x
= 19
.6, ν y
= 19
.2–
Expe
cted
tun
es (ν
x= ν y
=
19.4
) is
avg.
of
mea
sure
d (ν
x + ν y
)/2
–N
eed ⟨b
1⟩=
1.5 u
nits
in d
ipol
es t
o ex
plai
n tu
ne s
hift
–Th
is is
inco
nsis
tent
wit
h M
agne
t Te
st D
ata
•Co
uplin
g re
duce
d to
|νx-ν y|~
0.0
1 w
ith
skew
qua
d co
rrec
tors
–
Nee
d ⟨a
1⟩=
1 un
it in
dip
oles
to
expl
ain
stre
ngth
of
skew
qua
d–
This
is in
cons
iste
nt w
ith
Mag
net
Test
Dat
a
•M
easu
red
Chro
mat
icit
y di
ffer
ent
than
exp
ecte
d–
Idea
lly t
he m
easu
red ⟨b
2⟩is
cor
rect
ed b
y co
rrec
tors
–A
bout
⟨b 1⟩
= 1
unit
of
sext
upol
e is
una
ccou
nted
Sour
ce is
unk
nown
Mor
e on
thi
s la
ter
Pers
iste
nt c
urre
nts
were
not
un
ders
tood
at
the
tim
e.
Jan
24, 2
005
Teva
tron
Expe
rienc
e19
Succ
ess
in C
omm
issi
onin
g……w
as a
ttri
bute
d to
–Lo
ts o
f Pr
epar
atio
n–
Paid
att
enti
on t
o re
liabi
lity
–M
agne
t st
ring
and
A-S
ecto
r te
st o
f m
agne
ts w
ere
impo
rtan
t–
A “f
ocus
ed” c
omm
issi
onin
g ef
fort
-da
ily
mee
ting
to
plan
the
day
s ev
ents
.
Jan
24, 2
005
Teva
tron
Expe
rienc
e20
Earl
y O
pera
tion
al E
xper
ienc
e
•U
sefu
l Ref
eren
ce: “
Ope
rati
onal
Exp
erie
nce
with
Sup
erco
nduc
ting
Syn
chro
tron
M
agne
ts”,
P.S.
Mar
tin,
PA
C 19
87
•Bi
gges
t (b
ut n
ot o
nly)
pro
blem
was
bro
ken
supe
rcon
duct
ing
lead
s be
twee
n m
agne
ts.
•Pe
rsis
tent
Cur
rent
Eff
ects
(Chr
omat
icit
y D
rift
and
Sna
pbac
k) w
ere
a su
rpri
se f
or
colli
der
oper
atio
ns
Jan
24, 2
005
Teva
tron
Expe
rienc
e21
Teva
tron
Mag
net
Lead
sTw
o m
agne
t le
ads
at t
he e
nd
of t
he m
agne
ts a
re h
eld
toge
ther
wit
h Ka
pton
tie
wrap
sLe
ads
for
TB m
agne
ts
Lead
s fo
r TC
mag
nets
Jan
24, 2
005
Teva
tron
Expe
rienc
e22
Unt
ied
Mag
net
Lead
sSC
m
agne
t le
ads
Kevl
ar
tie
wrap
s
Bore
sco
pe p
ictu
re o
f th
e m
agne
t le
ads.
Show
s tw
o m
agne
t le
ads
tied
wi
th K
evla
r ti
e wr
aps.
Jan
24, 2
005
Teva
tron
Expe
rienc
e23
Brok
en M
agne
t Le
ads
•19
84: O
pene
d th
e cr
yost
ats
and
secu
red
lead
s wi
th K
evla
r.All
upst
ream
end
s of
TC
mag
nets
wer
e re
pair
ed.
•Ev
eryt
hing
is
OK?
•19
87: 8
mag
net
failu
res
in 5
mon
th d
urin
g Fi
xed
Targ
et o
pera
tion
s
–TC
-461
DN
Brok
en L
eads
–TC
-632
DN
Br
oken
Lea
ds–
TC-4
63 U
P
Cra
cked
Wel
d–
TC-5
50 D
N
Bro
ken
Lead
s–
TC-7
67 D
N
Gnd
Faul
t to
bea
m t
ube
–TB
-341
UP
B
roke
n Le
ads
–TB
-359
UP
B
roke
n Le
ads
–TB
-280
UP
Va
cuum
Lea
k
TC D
owns
trea
m n
ot O
K
TB L
eads
not
OK
Jan
24, 2
005
Teva
tron
Expe
rienc
e24
Ends
of
mag
nets
wer
e insp
ecte
d us
ing
bore
sco
pe a
nd x
-ray
s.
Beam
tub
e
Roun
d he
ad s
crew
inst
ead
of f
lath
ead:
Redu
ce c
lear
ance
G10-
bloc
k:So
me
were
loos
e
Kapt
onTa
pe:
unra
velin
g ca
used
m
agne
t to
bea
m t
ube
shor
t
Jan
24, 2
005
Teva
tron
Expe
rienc
e25
Insp
ecti
on R
esul
ts
788
8410
4#
bor
e sc
oped
00
048
Beam
tun
e Ka
pton
2521
2921
G-10
cle
aran
ce
1224
2522
G-10
blo
ck lo
ose
112
813
L-bl
ock
loos
e
00
07
Brok
en S
tran
ds
280
2285
Lead
s no
t ti
ed
9594
103
104
# x
-ray
ed
TC
Ups
trea
mTC U
pstr
eam
TB Dow
nstr
eam
TB Ups
trea
m
A lot
of
time
and
effo
rt f
or ins
pect
ion
and
repa
ir !
Jan
24, 2
005
Teva
tron
Expe
rienc
e26
Ope
rati
onal
Rel
iabi
lity
(Up
to M
arch
198
7)
Frac
tion
of
Com
pone
nt T
ypes
Repl
aced
in 4
yea
rs o
f O
pera
tion
s
19%
FEED
CAN
S5%
ALL
OTH
ERS
16%
SPO
OL
PIEC
ES6%
QU
AD
RUPO
LES
12%
DIP
OLE
SA
bout
1/6
of
thes
e we
re f
ailu
res
duri
ng
oper
atio
ns
•Of
24 p
roto
n/pb
ar s
tore
s on
ly 8
wer
e en
ded
inte
ntiona
lly–
RF s
tation
, Q
PS, va
cuum
, po
wer
supp
lies,
etc
. we
re c
ause
of
los
t st
ores
.
Jan
24, 2
005
Teva
tron
Expe
rienc
e27
Sum
mar
y of
fir
st 4
yea
rs
Not
tro
uble
fre
e.
Lots
of
prob
lem
s so
lved
.
It W
orks
!
Jan
24, 2
005
Teva
tron
Expe
rienc
e28
Colli
der
Run
I
LinacUpgradeFrom 200 –400 MeV
Unr
olle
d lo
w be
ta
quad
(8 m
rad)
LN2 Sh
orta
ge
Jan
24, 2
005
Teva
tron
Expe
rienc
e29
Colli
der
Run
I
352/
496
= 71
% o
f st
ores
end
ed int
ention
ally
Jan
24, 2
005
Teva
tron
Expe
rienc
e30
Less
ons
from
Run
I
•Re
liabi
lity
is s
till
an is
sue:
30%
of
stor
es
ende
d du
e to
fai
lure
.
•A
lignm
ent
of m
agne
ts is
an
issu
e.
•Ev
en a
fter
“ben
ign”
shu
tdow
ns it
tak
es t
ime
to g
et m
achi
ne p
erfo
rmin
g ag
ain.
Jan
24, 2
005
Teva
tron
Expe
rienc
e31
Colli
der
Run
IISt
ill le
arni
ng a
fter
all
thes
e ye
ars
050100
150
200
250
300
350
400
030
6090
120
150
180
210
240
270
300
330
360
Day
s Si
nce
Oct
ober
1
Integrated Luminosity (pb-1
)
FY04
FY03
FY02
FY04
Des
ign
with
Pba
r Tax
FY04
Bas
e wi
th P
bar T
ax
Slow
er s
tart
tha
n an
tici
pate
d in
FY
‘02
Jan
24, 2
005
Teva
tron
Expe
rienc
e32
Run
II R
elia
bilit
y
4Lo
w Be
ta Q
uads
2M
agne
t Fa
ilure
s3
Mis
cella
neou
s9
Que
nch
19Q
uenc
h Pr
otec
tion
Sys
tem
1Va
cuum
0U
tilit
ies
3Te
vatr
on R
F6
Teva
tron
Pow
er S
uppl
ies
3Se
para
tors
1Co
rrec
tion
Mag
nets
3Ex
peri
men
tal A
reas
14Cr
yoge
nics
2H
uman
Err
or13
Glit
ches
/Lig
htni
ng
2Ki
cker
s0
Inst
rum
enta
tion
7Co
ntro
ls20
0In
tent
iona
l
Colli
der
Run
IIA
Mar
ch 2
001
–O
ct 2
002
200/
292
= 68
% e
nded
int
ention
ally
Ave
rage
sto
re le
ngth
= 1
7.3
hour
s
Ave
rage
fai
led
stor
e le
ngth
= 9
.6 h
ours
Jan
24, 2
005
Teva
tron
Expe
rienc
e33
Com
pari
son
to M
agne
tic
Mea
sure
men
ts•
Mea
sure
d Tu
nes ν x
= 19
.6, ν y
= 19
.2–
Expe
cted
tun
es (ν
x= ν y
=
19.4
) is
avg.
of
mea
sure
d (ν
x + ν y
)/2
–N
eed ⟨b
1⟩=
1.5 u
nits
in d
ipol
es t
o ex
plai
n tu
ne s
hift
–Th
is is
inco
nsis
tent
wit
h M
agne
t Te
st D
ata
•Co
uplin
g re
duce
d to
|νx-ν y|~
0.0
1 w
ith
skew
qua
d co
rrec
tors
–
Nee
d ⟨a
1⟩=
1 un
it in
dip
oles
to
expl
ain
stre
ngth
of
skew
qua
d–
This
is in
cons
iste
nt w
ith
Mag
net
Test
Dat
a
•M
easu
red
Chro
mat
icit
y di
ffer
ent
than
exp
ecte
d–
Idea
lly t
he m
easu
red ⟨b
2⟩is
cor
rect
ed b
y co
rrec
tors
–A
bout
⟨b 1⟩
= 1
unit
of
sext
upol
e is
una
ccou
nted
Mor
e on
thi
s la
ter
Mor
e on
thi
s la
ter
Sour
ce is
unk
nown
Jan
24, 2
005
Teva
tron
Expe
rienc
e34
Teva
tron
Mag
net
Cold
mas
s
7.74
9m
Smar
t Bo
lts
Cold
Mas
sW
arm
Ir
on
Jan
24, 2
005
Teva
tron
Expe
rienc
e35
tota
l lift
chan
ge
in lift
shrin
kage
tota
l lift
chan
ge
in lift
shrin
kage
Cre
ep in
G11
sus
pens
ions
→co
ils
drop
ped
~3 m
ils in
yok
e →
~+1
unit
of a
1 (b
1 un
chan
ged →
unifo
rm
cree
p)
Tabl
es: a
1/b1
cha
nge
in b
ody
of 8
Te
vatr
on d
ipol
es 1
980
–re
cent
ly
(bod
y po
sitio
n, ~
0.8m
/ 2.
4m p
robe
s us
ed in
20
03 /
1980
s m
easu
rem
ents
)
Dip
ole
Smar
t Bol
t Mea
sure
men
ts
-0.0
20-0
.015
-0.0
10-0
.005
0.00
00.
005
0.01
00.
015
0.02
00.
025
0.03
00.
035
1
12
23
34
45
56
67
78
89
100
111
122
133
144
155
Mag
net
Inches
Qua
dran
t 1Q
uadr
ant 2
Re-s
him
med
~50
0 D
ipol
esto
mov
e co
ld m
ass
into
ce
nter
of
the
warm
iron
.
Stre
ngth
of
skew
qua
d co
rrec
tors
red
uced
by
~50%
Jan
24, 2
005
Teva
tron
Expe
rienc
e36
B12
test
: ea
rly
eviden
ce o
f a1
pro
blem
“It’
s all
sa
id…
“
P. B
auer
Jan
24, 2
005
Teva
tron
Expe
rienc
e37
Tune
Dri
ft @
150
Gev
y =
0.00
41L
n(x
) + 0
.556
2
y =
-0.0
027L
n(x
) + 0
.596
2
0.55
5
0.56
0.56
5
0.57
0.57
5
0.58
0.58
5
0.59
0.59
5
020
4060
8010
012
0
Tim
e at
150
GeV
(min
)
Tune
Aft
er
corr
ecti
on
algo
rith
m
was
impl
emen
ted
Tev
need
s
∆υ(t
) < 0
.002
Why
doe
s th
e tu
ne d
rift
? Is
it r
elat
ed t
o b 2
dri
ft?
Not
iced
onl
y in
Run
II?
Coup
ling
drif
ts a
lso.
∆νm
in=
0.02
tun
e un
its
Jan
24, 2
005
Teva
tron
Expe
rienc
e38
Tune
Var
iati
ons
on t
he r
amp
0.02
tu
ne u
nits
Aft
er
fixe
s
153
Gev
Des
ired
tun
es
(red
line
s) a
t 0.
575
and
0.58
3
•Nea
r st
art
of r
amp
(150
→15
3 Ge
v): l
arge
tun
e/co
uplin
g ex
curs
ions
•Tun
e/co
uplin
g ch
ange
s of
(0.0
2 tu
ne u
nits
, 0.0
2 m
inim
um t
une
split
)•V
aria
tion
s fi
xed
with
add
itio
nal b
reak
poin
t at
153
Gev
and
tune
/cou
plin
gsn
apba
ck c
orre
ctio
nat
sta
rt o
f ra
mp.
Jan
24, 2
005
Teva
tron
Expe
rienc
e39
Corr
ecti
on in
Rol
ls
-3-2-10123456789
010
0020
0030
0040
0050
0060
00
Z(m
)
Roll (mrad)
Oct
-03
Rol
lsC
urre
nt R
olls
-3-2-10123456789
010
0020
0030
0040
0050
0060
00
Z(m
)
Roll (mrad)
Oct
-03
Rol
lsC
urre
nt R
olls
Com
pari
son
of m
agne
t rol
ls (D
ipol
es a
nd Q
uadr
upol
es)
arou
nd th
e en
tire
Tev
atro
n be
fore
and
aft
er th
e su
mm
er
shut
dow
n an
d th
e tw
o D
ecem
ber
shut
dow
ns. C
urre
nt r
olls
ar
e in
pur
ple,
the
corr
ecte
d O
ct-0
3 ro
lls a
re in
dar
k bl
ue.
The
ori
gin
is a
t A0.
Jan
24, 2
005
Teva
tron
Expe
rienc
e40
Com
paris
on o
f Ele
vatio
ns B
efor
e &
Afte
r Cor
rect
ions
40.0
40.2
40.4
40.6
40.8
41.0
01,
000
2,00
03,
000
4,00
05,
000
6,00
0
Z (m
)
Elevation (inch) Ref
eren
ce L
ine
Sta
rt of
Sum
mer
Shu
tdow
nB
est C
urre
nt M
easu
rem
ents
Com
pari
son
of e
leva
tions
bet
wee
n be
fore
and
aft
er th
e su
mm
er
shut
dow
ns. T
he o
rigi
n is
at A
0.
Elev
atio
ns –
Befo
re &
Aft
er
Jan
24, 2
005
Teva
tron
Expe
rienc
e41
Orb
it o
ffse
t in
dip
oles
+ s
extu
pole
fie
ld
drif
t ca
n ex
plai
n ~
30%
of
tune
and
cou
plin
g dr
ift
Jan
24, 2
005
Teva
tron
Expe
rienc
e42
The
first
is o
f the
eff
ects
from
the
50K
lb
tract
or/tr
aile
r.
The
effe
cts o
f a sn
owpl
ow p
assi
ng B
0 ab
out 5
tim
es.
Expl
ains
the
sour
ce o
f spi
kes
on th
e B
LMs
Acc
eler
omet
er
Mea
sure
men
ts a
t B0
This
wou
ld c
ause
the
colli
mat
ors t
o st
op d
urin
g
beam
hal
o sc
rapi
ng!
Mea
sure
d by
To
dd Jo
ihns
onA
nd D
uane
Pl
ant
Jan
24, 2
005
Teva
tron
Expe
rienc
e43
Colli
mat
or D
amag
eM
ask
out
BLM
sto
pre
vent
fa
lse
abor
ts.
Mag
neti
c fi
elds
dec
ay s
low
enou
gh t
o pr
even
t ra
pid
beam
loss
.
Que
nch
dete
ctio
n wi
ll pu
ll th
e ab
ort
befo
re d
amag
e is
do
ne.
Conv
ention
al W
isdo
m:
We
won’t
dam
age
anyt
hing
wi
th b
eam
in t
he T
evat
ron.
Jan
24, 2
005
Teva
tron
Expe
rienc
e44
16 h
ouse
Que
nch
Dec
, 5, 2
003
Dea
n St
ill
Ferm
ilab
Teva
tron
Dep
artm
ent
12/1
2/20
03
Ack
nowl
edgm
ents
The
data
, an
alys
is a
nd c
oncl
usio
ns p
rese
nted
com
e fr
om
man
y pe
ople
and
dep
artm
ents
in
orde
r to
car
eful
ly a
nd
accu
rate
ly d
escr
ibe
the
even
ts o
f th
e 16
hou
se q
uenc
h on
D
ecem
ber 5
, 200
3. I
wou
ld li
ke to
than
k an
d ac
know
ledg
e al
l tho
se w
ho c
ontri
bute
d.
The
list i
s of
per
sonn
el is
long
bu
t the
se a
re th
e m
ain
cont
ribut
ors:
J. A
nnal
a, B
. Han
na, T
. Jo
hnso
n, D
. Wol
ff, B
. Flo
ra, N
. Moh
kov,
S. D
rozh
din,
B.
Hen
dric
ks a
nd M
echa
nica
l sup
port,
CD
F po
t per
sonn
el.
Jan
24, 2
005
Teva
tron
Expe
rienc
e45
CDF
Pot
3 Po
siti
onPo
ts h
ave
been
foun
d in
add
ition
al fa
ilure
test
to m
ove
at12
00m
ils/s
ec.
Sim
ilar i
ncid
ent o
n ~
3/17
/03
Rep
rodu
ced
afte
r que
nch
On
Dec
5, 2
003
Jan
24, 2
005
Teva
tron
Expe
rienc
e46
Pot
3 Pi
ctur
esPo
ts d
id N
OT
sust
ain
any
dam
age:
Can
con
clud
e th
at th
ey
did
not h
it pr
imar
y be
am.
Prot
ons
Thes
e ar
e pi
ctur
es b
efor
e D
ec 5
,200
3(C
ourte
sy C
DF
Pot P
erso
nnel
)
Jan
24, 2
005
Teva
tron
Expe
rienc
e47
T44
loss
of
Que
nch
Jan
24, 2
005
Teva
tron
Expe
rienc
e48
QPM
Ove
r Sa
mpl
e Bu
ffer
Que
nch
A48
1st
Abo
rt Fi
red
16m
sec
Dev
elop
men
t of
Que
nch:
A48
U 1
6mse
cD
48L
13.5
mse
cF1
7L 1
3mse
cE1
1U 1
2.5
mse
c
Bef
ore
abor
t
(Cou
rtesy
D. W
olff
& E
E Su
ppor
t)Q
uenc
hed
5 di
pole
s at A
48; D
I/Dt=
.5A
/mse
c
Jan
24, 2
005
Teva
tron
Expe
rienc
e49
Dam
age
to D
49 T
arge
t Dam
age
toD
49 e
stim
ated
Took
20-
30 tu
rns
To c
reat
e ho
le.
Onc
e th
e ho
lew
as o
pen
allo
wed
Bea
m to
trav
el to
ne
xt li
miti
ng
horiz
onta
l ape
rture
whi
ch is
E03
Jan
24, 2
005
Teva
tron
Expe
rienc
e50
Dam
age
to E
03 1
.5m
Co
llim
ator
Prot
ons
Jan
24, 2
005
Teva
tron
Expe
rienc
e51
Teva
tron
Rin
g W
ide
Loss
Plo
t
Jan
24, 2
005
Teva
tron
Expe
rienc
e52
1)Th
e cu
rren
t Q
uenc
h Pr
otec
tion
Sys
tem
wou
ld
NO
T be
abl
e to
cat
ch t
his
type
of
even
t be
caus
e it
pro
cess
es d
ata
at 6
0Hz
/16.
67 m
sec.
2)It
mig
ht h
ave
been
pos
sibl
e to
sto
p da
mag
e t
o co
llim
ator
s wi
th d
iffe
rent
loss
mon
itor
pr
otec
tion
sys
tem
oth
er t
han
SVX
. Th
is n
eeds
di
scus
sion
and
pos
sibl
e lo
ss m
onit
or h
ardw
are
syst
em u
pgra
de.
3)Ev
en t
houg
h 2
colli
mat
or d
evic
es w
ere
dam
aged
, th
ese
devi
ces
defi
ned
the
limit
ing
aper
ture
and
ar
e ea
sy t
o ch
ange
and
pro
vide
d pr
otec
tion
to
othe
r co
mpo
nent
s.
Jan
24, 2
005
Teva
tron
Expe
rienc
e53
Conc
lusi
ons
•Th
e Te
vatr
on h
as h
ad 2
2 go
od y
ears
so
far
.
•It
was
n’t a
lway
s ea
sy b
ut it
was
a
succ
ess.
•St
ill le
arni
ng a
bout
the
Tev
atro
n ev
en
toda
y.
Jan
24, 2
005
Teva
tron
Expe
rienc
e54
From
: Tev
atro
nTo
: LH
C
Good
luck
to
cont
inue
the
tra
diti
on o
f th
e wo
rlds
hig
hest
ene
rgy
supe
rcon
duct
ing
sync
hrot
ron
!