General Introduction
• Work done in the past 4 months presented in the
individual sub-detectors talks: highlights
• Construction is now fully going on but tests are continuing
• Much more detailed schedule for the next year
A. Baldini PSI July 04
INFN & Genova University S. Dussoni, F. Gatti, P. Ottonello, D. Pergolesi, R.
Valle
INFN & Lecce University S. Spagnolo, C. Chiri, P. Creti, C. Gatto,G. Palama’, M.
Panareo, G. Tassielli
INFN & Pavia University A.de Bari, P. Cattaneo, G. Cecchet, G. Nardo’, M.
Rossella
INFN & Pisa University A. Baldini, C. Bemporad, F.Cei, S. Giurgola, M.Grassi,
F. Morsani, D. Nicolo’, A. Papa, R. Pazzi, F. Raffaelli, F. Sergiampietri, G.
Signorelli
INFN Roma I D. Zanello
ICEPP, University of Tokyo Y. Hisamatsu, T. Iwamoto, T. Mashimo, S. Mihara,
T. Mori, H. Natori, H. Nishiguchi, W. Ootani, K. Ozone, R. Sawada, Y.
Uchiyama, S. Yamada, S. Yamashita
KEK, Tsukuba T. Haruyama, A. Maki, Y. Makida, A. Yamamoto, K. Yoshimura
Waseda University T. Doke, J. Kikuchi, H. Okada, S. Suzuki, K. Terasawa, M.
Yamaguchi
PSI, Villigen J. Egger, P. Kettle, M. Hildebrandt, S. Ritt, M. Schneebeli
Budker Institute, Novosibirsk L.M. Barkov, A.A. Grebenuk, D.G. Grigoriev, B,
Khazin, N.M. Ryskulov
A. Baldini PSI July 04
Highlights
• Beam: spot size bigger than previous estimates MC
simulations: is this a problem ?
• Magnet: interaction with the other experiments
• Xenon detector:
• PMTs with double Al layer tested (very good results)
• work on a modified base (zener diodes)
• Drift chambers: test of foils stability  introduction of a carbon
fiber
• Timing counter: test in the COBRA field
• Electronics: new design of the DSR (x-talk)
• Software: framework chosen. Further people joining the
experiment
A. Baldini PSI July 04
Construction
• Beam:
•Triplet I and II finished
• BTS specifications sent to Novosibirsk
• Xenon detector:
• Cryostat design finished (order in September)
• 290 PMTs ordered
• Design of the PMT supporting structure
• Timing Counter:
• 2’’ PMTs soon ordered
• final design started
A. Baldini PSI July 04
Tests
• Neutron test done in the past days (to be
continued): initial results
• Timing counters in Cobra + test of full size at
different angles
• New Xenon
• test this year with negative pions to test timing
resolutions with the new PMTs and final
electronics (dsr, Trigger)
• + calibration wires (spots on a thin wire)
A. Baldini PSI July 04
2004
J
F
M
A
M
J
J
MEG
MEG
N
D
Gotta
Commiss.
Part 1
Platf.
Beam
Line
Drift
Chamber
LPT
O
Calibration
(Wed)
COBRA
Timing Counter
S
Prac
Beam Time
A
Proto
type
Mechan.
Matching
Test
Neutr.
BG
PM +
Src Inst
Full Calorimeter
Trigger
Test
DAQ
A. Baldini PSI July 04
Pi- Beam
Test
Liq.
Purif.
2005
J
Beam Time
F
M
A
M
Shutdown
J
J
MEG
2006
A
S
O
Gotta?
N
D
Field
Map
Beam
Line
Drift
Chamber
Timing
Counter
Mounting
LPT
PMT testing + calibration
BTS
Test
Commiss.
Part 2
Full Beam
Line Test
Mounting &
Testing
BG
Test
Cryo.
Installation
Crane+
Tent
Inst
Studies
(Wed + remote)
Assembly
Test
Inst
Inst
DC
Electr.
BG
Test
Inst
Trigger
DAQ
F
Inst
A. Baldini PSI July 04
M
Shutdown
MEG
COBRA
Full
Calorimeter
J
A