Post on 01-Feb-2016
description
ME1/1 Upgrade and Installation Plans
V.Perelygin
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 1
ME1/1 Upgrade: New electronics
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 2
On-chamber:
•DCFEB (7 boards/ CSC)
•LVDB•LVMB•ALCT mezz
•Optical link to P.C.
Perifperal Crate:
•ODMB•TMB mezz•MPC
ME1/1a Un-ganging in the region 2.1<|η|<2.4
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 3
66 77
LVDB
ME1/1a 3-to-1Connect. Scheme:3 strips to one CFEB channel:
With 7 DCFEBs: 1 strip → 1 channel
ME1/1 Upgrade advantages:
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 4
1.Unambiguous trigger operation in the region 2.1<|η|<2.4 (no ghosts)
2. Electronics with higher rate capability
3. Readout robustness ( Optical readout replaces 50-pin SC cables having up to 14.5m length)
4. ME1/1a: 18% noise decrease → Spatial resolution improves from 60 µm to 52 µm
ME1/1 Upgrade: organization
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 5
2 working groups: 1.At UXC-CSC extraction/ loading-CSC transportation-Machinery works-SC cables cutting -Optical cables routing -ME1/1 P.Panel modification
2.At the ME1/1 Assembly Room-Old electronics disassembly-New electronics implementation-Chamber tests with new FASTDAQ software
ME1/1 CSC installation
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011
Bottom CSC installation with ~5m extension bar
6
Loading Machine
Need Crane + Cherry picker
ME1/1 Zone
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 7
ME1/1 P.Panel
20º cable trays
To be redone for optical cables
CSC opt. P.Panel
Time estimation – UXC works
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 8
Remove CSC from disk: 2 ÷ 3 chambers / day (~8 hours) Crane + Cherry picker 2 persons
Install CSC: ~2 chambers / day (~8 hours) Crane + Cherry picker 2 persons Board change on the installed CSC: 4-6 hours Crane + Cherry picker 2 persons
LS1 schedule - time in UXC with crane
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 9
• Remove CSC – all 72 in one time period
• Reinstall CSC – in 2 separate time periods (36+36)
Means that we need to store all the chambers: 72+4 spares upstairs.
ME1/1 Assembly Room + Storage area
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 10
Ar+CO2 ; LV
For the tests a new FASTDAQ software should be developed.
Assembly room: where ?
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 11
SX5! But for ALL CSC now only 100m2 is reserved… Need to decide.
ME1/1 Upgrade cycle
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 12
1.Extraction
2. CSC are in dosim. quarantine at UXC (?)
3.Old electronics disassembling new one installation. FASTDAQ tests w/o HV
4. Storage area: burn-in testing.Gas flow, LV=ON
5. Full FASTDAQ Tests: LV, HV. CSC passport
6. Loading
Machinery(Workshop)
Ped.noise
Landau
CFEB, LVDBGo to ME 4/2
Tests on Disks
• Installed CSC should be connected to the VME
electronics and tested with small FASTDAQ setup
(LV tests).
• In the case of board failure after installation CSC
should be extracted and board changed.
• There should be more time reserved for CSC
installation than that for extraction.
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 13
Electronics tests at ISR and on- chamber integration
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 14
• It is very important to know how much the boards installation and test work takes. For this we need to work with a CSC fully equipped with the new electronics.
• Now at ISR we test new LVDB with 7 CFEBs installed on spare ME1/1 CSC
• On-chamber integration (drawings in preparation):- Optical cables routing and optical P.Panel position, - New cables: LV, in ME1/1a: Strip readout and DCEB-DCFEB - Mechanical works for ME1/1a area: new screens and support details- CFEB & ALCT covers to be machined to match DCFEB geometry
• End of this year – out of ISR…. ->SX5?
Conclusion
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 15
• The Upgrade of ME1/1 electronics is important and challenging
• The work to be done during LS1
• A lot of things not yet defined and scheduled
• On-chamber Integration work is going on
• Problem with Testing/ Assembling areas – place to be defined
Backup slides
Backup slides
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 16
Extraction/ Installation Procedure
• Works to done beforehand (Cherry picker needed ): Sealing opening, P.Panel opening, Cables disconnection Could be done at any time before chamber extraction for a number of CSC.Preparation for 4 CSCs – one day.
• Preliminary operations (if some EMU CSC work):- HV zeroed for CSC to be extracted and other 3 CSC in the same gas chann.- Corresponding Maraton switch off → 9 ME1/1,2,3 CSC off (trigger sector)- Gas channel on the ME1/1 gas panel disconnected
• Main work (Cherry picker +Crane) needed :- preparations in UXC
(Loading machine posts installation, Cooling channel off, Gas/water pipes)- CSC extraction (loading), (2-3 CSC / 8hours).
• Subsequent works- Services back (water, gas, LV)- HV ON
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 17
FASTDAQ tests at ISR: CSC 8B- (3 CFEBs in ME1/1a)
V.Perelygin CMS Upgrade Week and Workshop Nov. 08-2011 18
Test 15 CFEB noise
Test 21 Comparator