Upload
carson
View
23
Download
0
Embed Size (px)
DESCRIPTION
Some Remarks. Konrad Elsener (CERN). The early days of NBI workshops (and before that…). Google for “Yamanoi KEK”. MINUTES OF E362 FRONT DETECTOR MEETING Date: 16:00-17:00, October 20, 1995 Place: KEK meeting room (next to Library) - PowerPoint PPT Presentation
Citation preview
Some Remarks
Konrad Elsener (CERN)
The early days of NBI workshops (and before that…)
Google for “Yamanoi KEK”
MINUTES OF E362 FRONT DETECTOR MEETING Date: 16:00-17:00, October 20, 1995Place: KEK meeting room (next to Library)Present: Nishikawa (Chairman), Chikamatsu, Miyamoto (INS), Miyano(Niigata), Sakuda(KEK), Tamura(Okayama), Nishijima,Etou(Toukai), A.Suzuki, Kohama(Kobe)
(1) Nishikawa summarizes the preceding Horn meeting (Yamanoi, Ieiri, Yoshi-Suzuki, Miyamoto, Nishikawa, Kohama, A.Suzuki). Yoshi-Suzuki(KEK) ordered a power supply for the Horn for ~1.2 Oku-yens.It will be delivered next April. A public tender for the 2nd Horn will be held in mid-November. One problemwith the horn is how to handle the thermal expansion of the structure,which is estimated to be about 3mm. They consider the structure whose oneend is set free along the direction of the expansion. Miyamoto/Yamanoi independently calculate the stress due to the magneticforce. They agree. The Horn current (I) will be monitored by either the voltage (=IR), Hallprobe or pickup coil.
(2) …
…
CERN participants: Valeri Falaleev, K.E.(NGS -> CNGS was not yet an approved project)
(Fermilab participants: Jim Hylen and Jorge Morfin)
First NBI workshop - 26-29 July 1999 at KEK
NBI 1999
“K2K”
NBI 1999
NBI 1999Proceedings
… we then moved on to …
Fermilab (2000)CERN (2002)KEK (2003)Fermilab (2005)CERN (2006)J-PARC (2010)
… to the web … … and to INDICO ...
NBI 2003
NBI 2002
ForbiddenYou don't have permission to access /nbi2005/photos/tour/ on this server.
NBI 2005
NBI 2005
NBI 2006NBI 2006
E. Gschwendtner, CERN 10NBI, 8 September 2006
comparison measurement-simulation, horizontal pit1
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
-157.5 -146.3 -135 -123.8 -112.5 -101.3 -90 -78.75 -67.5 -56.25 -45 -33.75 -22.5 -11.25 0 11.25 22.5 33.75 45 56.25 67.5 78.75 90 101.25
112.5 123.75
135 146.25
157.5
cm
char
ges/
pot
meas: nominalsim: nominal
Comparison Meas.-Sim. I (Preliminary)
Muon Monitors, Horizontal Pit 1
■ Measurement■ Simulation
Fluka simulation; P. Sala et al
NBI 2006
What’s special about the NBI workshops (why we like them…)
Final Horn Status of K2KKazuhiro TANAKA forthe KEK-PS Beam Channel Group, & the K2K Beam Tuning Team
1st Horn Target Rod (20mm diameter) Break (1.9x106 excitations)
NBI 2005
from K. Tanaka
NBI 2005
Horn Flexible Feeder Trouble (8.5x105 excitations)
from K. Tanaka
KEK Engineering Award 2003
Suzuki and Yamanoi received 3rd KEK Engineering Award for their development of K2K horn system
NBI 2005
from K. Tanaka
0.0E+00
2.0E+06
4.0E+06
6.0E+06
8.0E+06
1.0E+07
1.2E+07
1.4E+07
'99/
01
'99/
05
'99/
09
'00/
01
'00/
05
'00/
09
'01/
01
'01/
05
'01/
09
'02/
01
'02/
05
'02/
09
'03/
01
'03/
05
'03/
09
'04/
01
'04/
05
'04/
09
'05/
01
Run1999
Run2000
H - 3- 5φ 251
H1- 4φ 30
H2- 2
H2- 1
H1- 7φ 30H2- 3
H - 3φ 251
H1- 2φ 20
H1- 6φ 25Parabolic disk
Run2001
H1- 8φ 30
H1- 8φ30
Run2002- 03
Run2004
Operation History of K2K Horns
NBI 2005
from K. Tanaka
On horns, what we learned are···(Presented at NBI2000)
• Horn can work as designed in both mechanically and electrically.
• We should pay attention more and more to peripherals, which can break as designed.
• Test excitation in the actual position should be as many as possible.
• Never compromise with Physicists.• Sufficient time, money, manpower for R/D and for
operation, maintenance.• Believe yourself.
NBI 2005
from K. Tanaka
Conclusion
Have a great workshop !
NBI 2012
(Apologies that I can only be around part-time)