CMS ZDC Remote Handling Status LTEX Meeting - Sept. 13, 2012 The Crane Testing and Development has moved from SX5 to ISR: Crane #2 has been fully assembled, installed on Test platform and Operated with the oversize testing payload. #2 works exactly as #1 which Was tested at SX5 May 29. Cranes now operated with completed electric control. Rehearsal and refined procedure for crane INSTALLATION onto TAN, finished! - Fully documented in raw form, creating electronic copy for publication week of Sept 17 (next week) for Transport and RP review. NORMAL OPERATION procedures now priority to finalize and publish Documents for Transport and RP review. First draft to publish ~ Oct. 1

CMS ZDC Remote Handling Status EXCEPTIONAL OPERATION (Emergency Payload Removal) Procedure is Still under development at ISR. - An architecture using a manual winch and steel ‘guiding ramp’ between suspended payload and Sarco slot has been chosen. - Currently identifying specific hardware and generating production drawings for prototype system to be used in practicing emergency procedures. Start practicing emergency removal with system ~ Nov. 1. MECHANICAL ANALYSIS documentation has been proceeding in parallel with Operational procedures and documentation. Published for review by Safety ~ Oct 15.

Power and Control System The control system is fully implemented, and cabled between control cabinet, Motors,, limit switches, remote handset. System has been tested extensively and is working exactly as expected. Documentation is complete in hand-written form and now being translated into Electronic format. Fully redundant control access from cabinet front panel and from remote handset 20m length between crane system and cabinet, and 20m cable from cabinet to Remote handset. Allows operator to stand anywhere from at the TAN to 40m Distant while operating. State machine only allows appropriate commands based on mechanical position Of crane. Contradictory or confused commands are locked out by state machine. Logic system is current-loop based so any loss of signal connectivity results in crane motion halt. Control logic (state machine) circuit prototype is being checked over by an Electrical engineer and a standard printed circuit will be made.

Examples of State Machine + User Interface Each state is represented to the operator as illuminated valid motion commands. The User must actively hold down the command button for command to be active. Limit switches Activate which motions are possible and crane will halt motion upon reaching any limit. Motor power is controlled by a current-loop command from the operator using the Power supply which drives the control logic, thus it is impossible to apply power to motors Without the control logic active. The handset and control cabinet Each possess an on/off switch and emergency stop button: all 4 switches must be Selected in order to power motors. This sequence shows 3 of 7 possible states with associated active commands: 1 – Centered over TAN with payload partially raised, possible to raise/lower payload only 2 – Centered over TAN with payload fully raised, possible to lower payload or move to Sarco 3 – In transit between TAN and Sarco (payload up), possible to rotate toward TAN or Sarco These show the state machine active with motor power NOT activated – Shows the motor power activated with control in same state as #2, above

Crane Transport: Surface to LHC Tunnel Large structures are transported as 2 components: 1.Crane mounted on fixture. Fixture is a pedestal Mounted onto a standard Sarco foot platform. Transported with standard pallet lifter. Mass < 400kg Dimensions = 1550(l) x 670(w) x 1000(h) Need to verify with transport clearance of object between PM56 elevator and Pt.5 TANs, left and right sides. 2. Standard CMS ZDC Sarco on platform. Transport in PM56 elevator and to TANs is already verified.

Lifting of CRANE/Pedestal onto Sarco to form final assembly fixture for crane installation to TAN. 2,2m from floor ? Max Vert position Of hoist lifting hook 350 kg load Crane on Installation platform is Detached from transport footing (sarco Footing) and lifted onto Sarco Top. Need to verify suitability of chain hoist System used underground, to execute This procedure. This is anticipated to be done Near the bunker at each side of IP. Exact location to be Discussed for optimal results. After transport underground: Sarco and Crane/Platform are Assembled vertically – this assembly is Used to mount the crane to the TAN.

Bran Issues 1.The BRAN gas hoses interfere with a rotating drive shaft of the crane actuators. This condition has been identified for 2 years and it has been agreed to be a Simple task to re-route the gas lines. However, it is important that specific plans are Made to accomplish this prior to crane installation. Components must be on hand, and The task planned to execute this re-routing prior to crane installation. 2. The placement of the different elements (ZDC, BRAN, BARS) needs to be fully Understood. Currently it is believed that the BRAN is located in different positions Along the slot length, and the other elements shifted accordingly. These are explained in more detail in the following slides.

BRAN gas line / Crane drive shaft 1.Interference with rotary jack interconnect input drive axle. Discussed with E. Bravin. Simple to move gas hose. 1 Rotary Jack input drive coupling axle THIS DRIVE SHAFT Spins at 1000 rev/min So cables/hose must be secured Clear of shaft!!!

Elements Placement in TAN slot The “official” elements placement is shown At left. This geometry was used to design The fixation point locations of the crane And payloads. It is NOT clearly understood that the current State of elements in TAN conforms to this Geometry. Specifically, one BRAN is believed to be located at the nominal position centered at 200mm from the front (IP) side of slot and The other is offset. The crane does not care where elements are placed, elements can be placed anywhere in the full slot length. BUT – movement in the Z axis is not an operational degree of freedom, these offsets are accomplished by offsets built into the payload attachment fixtures. These Fixtures are built elements and thus the element placements must be understood in advance. Detector owners for the ZDC and BRAN must understand exactly where their detectors are currently placed, where they nominally Want them to be paced, and appropriate crane fixtures will be built to achieve this.

Schedule for Christmas 2012 break and LS1 The current planning is to reinstall the CMS ZDC manually without the use of the remote handling tool. Then installation of the remote handling tool occurs during LS1. It may be possible to obtain approval for installation and operation of the remote handling tool to be used For CMS ZDC installation during Xmas break prior to the proton-ion run. - This depends upon the completion of the documentation package in time for approval All documents submitted for review - Mid October Also depends upon the successful demonstration of the emergency removal procedure Demonstration and documentation of emergency removal - Mid November 2012