Http://totem.web.cern.ch/Totem/ Roman Pot Engineering Design Review CERN, 14 February 2006 M.Oriunno, CERN PH-TOT Installation, Commissioning and Schedule

http://totem.web.cern.ch/Totem/

Roman Pot Engineering Design Review CERN, 14 February 2006M.Oriunno, CERN PH-TOT

Installation, Commissioning and Schedule

Marco Oriunno

CERN, PH TOT

TOTEM Collaboration


ROMAN POT

Engineering Design Review, CERN 14 February 2006





TOTEM Geography @ LSS5

220 m, C6.L5145 m, C4.L5

220 m, C6.R5145 m, C4.R5



Integration of services•Trigger latency critical for the station at 220 m

•Optimized cable routing of the trigger cable to the CMS counting room



2 Racks in the USC55Tunnel

Motors and Controls cabling

Accessible area with circulating beam

Not Accessible area with circulating beam



The installation procedure



Deliverables from previous tasks : Roman pot stations installed and aligned, cooling plant installed, cables and patch panels electrically tested and connected

Infrastructures : In addition to the permanent specified services, Power supply 220V/50Hz for test equipments, Internet connection

Access requirements: Standard access mode to the tunnel, since no dangerous materials or tests are foreseen. Access granted to a team of ~4 people minimum plus tools per sub-system to be commissioned

1st assumption -> The Roman Pot are vacuum equipments of the LSSs. They must be included in the planning of the vacuum commissioning of the LSS, namely:Sectorization valves, bake out, NEGs activation, pure gas filling if required.

2nd assumption -> At the commissioning the pots are under secondary vacuum, but without the detectors.

1. Motors & controls commissioning2. Cooling System Commissioning3. Interlocks & Signals Commissioning 4. Detectors connectivity and cooling

Commissioning of the Roman Pot(Discussed at the LHC Hardware Commissioning Working Group, 3 march 2005)

https://edms.cern.ch/document/566502/1



Tasks: Movements sequence of each independent motor Garage position->Data taking position->Garage positionValidation of Encoders readingValidation of LVDTs readingBeam Position Monitor calibration

Crew : 1 Sub –system supervisor1 technicians in the tunnel1 technicians in the counting room1 operator in the control room

Timing: 24 pot & motors to be checked~ 8 hours for 1 crew FTE

Remarks: The primary vacuum is required

Motors & controls commissioning sequences



Tasks :Check the logic of the interlocks signals with the Control RoomTo be included in the interlock commissioning of the machine

Crew : 1 Sub –system supervisor1 technician in the tunnel1 operator in the Control room

Timing: ~ 4 hours for 1 crew FTE

Remarks : Non need of the machine vacuum

Interlocks & Signals Commissioning sequences



Tasks : Electrical connection of a test assembly detector (warm system)Checking of: readout system

low voltagebias voltagetemperatures

Crew : 1 Sub –system supervisor1 technicians in the tunnel1 technicians in the counting room

Timing: 24 detector assemblies to check~ 12 hours for 1 crew FTE

Remarks : Non need of the machine vacuum

Detectors connectivity



High population density in the region between the TAN and D2 (C4.R5 & C4.L5) : Roman Pot, BI, Collimators, Vacuum components -> conflicts during the commissioning of the different items

Possible interferences :



• Preparation on Surface January-October 2006

1. Roman Pot equipment assembled on surface without detector

2. UHV Test of the system

3. Commissioning of the full system on surface (detectors, cooling, vacuum)

4. Relative alignment by metrology of the moving components Calibration of motors and encoders

5. Test beam on a fixed target (only for one or two units)

• Underground access through the PM56 shaft October-February 2007

1. Installation of the cooling system

2. Installation at the defined locations along the tunnel

3. Check of the cabling (motors, controls interlocks)

4. Vacuum Chambers connection

5. Alignment on the beam

• Roman Pot Commissioning

• After the LHC commissioning and just before the pilot runs

1. Installation of the detectors assembly in the pots

2. Connection to the patch panels and to the cooling plant

Installation phases break down



ID Task Name

48 Roman Pot Installation

49 LHC Vacuum Installation sector 4-5

50 Roman Pot Installation sector 4-5

51 Vacuum Commissioning Sector 4-5

52 LHC Vacuum installation Sector 5-6

53 Roman Pot Installation sector 5-6

54 Vacuum Commissioning Sector 5-6

55 LHC Cabling

LHC Vacuum Installation sector 4-5

Roman Pot Installation sector 4-5

Vacuum Commissioning Sector 4-58 weeks

LHC Vacuum installation Sector 5-6

Roman Pot Installation sector 5-6

Vacuum Commissioning Sector 5-68 weeks

LHC Cabling

N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J2005 2006 2007 2008 2009

Installation vs. the LHC machine

Documents

Http://totem.web.cern.ch/Totem/ Roman Pot Engineering Design Review CERN, 14 February 2006 M.Oriunno, CERN PH-TOT Installation, Commissioning and Schedule