1. CMS WEEK Sept. 24 Opening session CMS MUONS: Barrel Drift Tubes
Alignment
RPC
CSCs
Fabrizio Gasparini

2. THE BARREL MU DRIFTCHAMBERS 4 concentric stations
CMS WEEK Sept 24
Opening session
CMS Muon
fabrizio
THE BARREL MU DRIFTCHAMBERS
4 concentric stations
60 chambers each (MB4 70 ch.s)
680 SLs (MB1,2,3: 3 SL each,MB4 2 SL)
wires
Four assembly sites
Aachen MB MB1/4
CIEMAT MB MB2/4
LNL MB MB3/4
Torino MB4 (with two tables)

3. STATUS OF ASSEMBLY SITES:
assembly begun in march 01 in CIEMAT,in May in Aachen and LNL
CIEMAT : 12 SL assembled,first MB2 at CERN in June 3 ass. tables are operational
Aachen : SL assembled (3 ass. tables operational)
LNL : SL assembled (2 ass. tables operational, 2nd PHI in October)
22 chambers (66 SL) should be assembled by end 2001
30 SL MB2 (CIEMAT) / 18 SL MB1 (Aachen)/ 18 SL MB3 (LNL)
the three sites shall reach the nominal speed by Jan 02
end production Feb (176 w.d./year)
Torino shall begin to assemble MB 4 in September 02
CMS WEEK Sept 24
Opening session
CMS Muon
fabrizio

4. PLATES
TORINO :plates for 22 Ch. end of June
DUBNA :
will do electrode deposition only
all plates cut and Q. Checked in Torino
deposition line shipped to D /8
line assembly in D. begins /9
first plates /11
end production fall 2003
BEAMS
BOLOGNA : end beam prod. in Bo June 2001
I-beams assembled
PROTVINO:
10000 beams assembled at mid July with one table :
stable prod up to 220/day ( nominal 160/day)
second line at IHEP /10
prod. with 2 lines at IHEP (>= 320 I/g) /02
full lot fall 2003

5. Assembling first MB3 in Legnaro

6. SL construction - 2 working tables

7. Aachen

8. Aachen

9. CIEMAT

10. CIEMAT

11. TORINO

12. DUBNA

13. easy to go to 9 days /three SL
What we learnt:
15 days were taken in CIEMAT to assemble three SL of a MB2 chamber in parallel
on the three tables
10 w.d. were spent at LNL to assemble 2 SL in parallel on 2 tables (Sept.)
easy to go to 9 days /three SL
No,or negligible, problem with gas tightness and HV (18 SL tested, 5400 wires)
Still not a large experience on the time needed for the full test of a SL : however
the first 3 SL assembled in LNL could be set to the nominal voltages after two
days of conditioning. ( 9 days are planned for the SL test: gas tight./HV/rates)
CMS WEEK Sept 24
Opening session
CMS Muon
fabrizio

14. theta1 and phi1 were the training SLs
Baseline
theta1 and phi1 were the training SLs
CMS WEEK Sept 24
Opening session
CMS Muon
fabrizio

15. THE CMS ALIGNMENT SYSTEM
Basic elements
4 indipendent Link systems (A,B,C,D)
relate couples of local rigid structures
in the MU and in the Tracker.
The 4 Links are “bolted” together:
via the Tracker Internal System
via the Endcap Links and Radial Lines
Alignment scheme A A B D C
The chambers are located
with respect to the local rigid structures
(muon MABs & tracker Align.”Wheels”)
The full system should be able
to give a starting position of the
chambers within 500/100 micron
(MU/Tracker) and monitor relative
displacements of 100/20 micron
(20 microrad misalignment MU/Tracker) D

16. MAB Prototype (Barrel Alignment)
CERN: Design and specs.
INEGI (Portugal): Prototype(s) fabrication
Drawings for the pre-production prototype are ready.
Material is ordered and partially delivered (all available by end of Sept.)
Assembly table to be built (and be completed by mid Nov.)
Prototype ready for test by beginning of December.
CMS WEEK Sept 24
Opening session
CMS Muon
fabrizio

17. Layout of the Tracker Alignment System and Link with the Muon Alignment
Design of the 2D Si sensor
6x2 Laser beams (ray 1) provides the linking with the Muon System
CMS WEEK Sept 24
Opening session
CMS Muon
fabrizio

18. Performance/ISR test The major test was performed at ISR:
good results for LINK and Endcap
more problematic for Barrel because of the lack of a real MAB,
the Barrel need the Endcaps Link Lines to align the MABs of
the active planes.

19. For ME2, 3 layers...
1) Mapping the layer with 3 SLMs (6 chambers per layer).
2) Alignment by tracks for overlapping chambers (3-5 strips overlap)

20. In summary:
The Barrel and Endcap systems are well in track. No major technical problem is foreseen. Schedule looks feasible.
Link with the Tracker has been integrated within the TK internal alignment design. Technical work, including thermal transition and integration issues, is in progress.
CMS WEEK Sept 24
Opening session
CMS Muon
fabrizio

21. RPC
CMS WEEK Sept 24
Opening session
CMS Muon
fabrizio

22. CMS WEEK Sept 24
Opening session
CMS Muon
fabrizio

23. CMS WEEK Sept 24
Opening session
CMS Muon
fabrizio
Former Trigger

24. CMS WEEK Sept 24 Opening session CMS Muon
fabrizio

25. CMS WEEK Sept 24
Opening session
CMS Muon
fabrizio

26. CMS WEEK Sept 24
Opening session
CMS Muon
fabrizio