Test beam setup: status report 31/03/2009 M. Alfonsi (CERN)

31/03/2009M. Alfonsi - CERN2 Outline Schedule Installation of gas pipes Gas system Global setup & mechanics Magnet issues

31/03/2009M. Alfonsi - CERN3 Schedule updated to v2.0

31/03/2009M. Alfonsi - CERN4 Goliath magnet Gas pipes installed! To be done: - gas panel in the experimental area - leak test with He Gas panel must include also retention buckets for flammable gas sensors. Is ok to use quick connectors? sensor

31/03/2009M. Alfonsi - CERN5 Cost of the five gas lines 6mm diam. pipes x 240m 10mm diam. pipes x 240m Mechanical supports Estimated cleaning cost Estimated manpower cost TOTAL CHF CHF CHF CHF CHF CHF Paid by: Saclay (345 CHF) + CERN Left-over material: 30m pipes per type, some support

31/03/2009M. Alfonsi - CERN6 Gas mixing racks We can connect to the main distribution: –Ar, CO 2, N 2, He, ethane, isobutan –CH 4 temporary on “melange” line –We pay the bill at the end!!! Gas mixing racks: –5 gas system  at least 2 gas mixing rack, maybe 3 (the last only for not-flammable mixes) –To put 2 mixing rack in the retention bucket, we are asking for a reorganization of the gas zone, i.e. to move out the not-flammable main distribution rack Main distribution: flammable not-flammable Roof for light flammable gases Retention bucket for heavy flammable gases

31/03/2009M. Alfonsi - CERN7 Gas mixing systems Goal: flexible, upgradable during the several runs, possibility to mix main distribution as well as premixed bottles At the moment, not enough flowmeters and controllers for all the lines.. We start building setups for June from maindistribution (use left-over 10mm pipes) Only required gases or premixed bottles (use left-over 6mm -OR- flexible ss pipes) Mixing cylinder.. Who can provide some of them? flowmeter Connection to the pipes going towards the experimetal area Gas system per line

31/03/2009M. Alfonsi - CERN8 Lack of flammable gas sensors!!!  In the gas zone, they are provided by the SPS people:  put all the gas racks closer in the same bucket  In the experimetal area, only 2 avalaible.. and 1 is for the gas panel:  Additional sensors could be charged on us  For June seems ok: no flammable gas in MM tracker, isobutan for Frascati setup  For October we want isobutan and methane !!!  Sensors could not work in magnetic field!!! In this case problems also for June!!!

31/03/2009M. Alfonsi - CERN9 Cables list (barrack  area) 1)Fiber lines x10 (from Saclay?) 2)Ethernet lines x5 (from Frascati?) Anyway better to have also: 1)Set of BNC lines (24 from GDD) 2)SHV lines (4 from GDD) HV PS and DAQ is inside the experimental area, so are required:

31/03/2009M. Alfonsi - CERN10 Sketch of the installation Gas panel Setup A electr. rack for setup A Removable cable tray for setup A electr. rack for setup B Removable cable tray for setup B? Setup B DAQ PC

31/03/2009M. Alfonsi - CERN11 Setup “A” outside the magnet Placed upstream Goliath Beam line Beam height ~ 128 cm Useful space 3.3 m Beam monitor Beam element Table with micromegas tracker If Detector Under Test is large, as in June, place it just after the table (together with your support mechanics!!!)

31/03/2009M. Alfonsi - CERN12 Table with micromegas tracker A grid of holes for fixation For flammable gas: –Retention buckets must be added on table and, in case, as a roof –Holes must be blind Lenght 120cm Height 70cm from the floor Can part of the legs be substituted by a concrete block? If yes, how can we fix on it? Width 80cm

31/03/2009M. Alfonsi - CERN13 Setup “B” inside the magnet rail wheel Beam Beam height ~ 128 cm ~ 85 cm Table with grid of holes, same issues (blind holes, retention buckets..) for flammable gases, see previous slide. Dimension to be defined Only 43 cm between beam level and the level of the Goliath coil surface!!! A specific rail system will be designed to recover some space:

31/03/2009M. Alfonsi - CERN14 Additional issues with Setup “B” Rails should extend outside Goliath: –Additional dismontable rails with some mechanical support? Should we dismount also rails every time? Gas alarm sensors in magnetic field How much close to Goliath can the electronics rack “B” be place? –Usually LVDS should be not longer than 5m –The electronics can be sensitive to magnetic field

31/03/2009M. Alfonsi - CERN15 Additional common issues Cables and gas pipes from panels to setups: –additional removable cable trays? –plastic gas pipes for this year, to be upgraded to flexible stainless steel (setup B requires flexible ones) DAQ PC inside the area: –Radiation issue to be checked (especially for pc removed after the use)

31/03/2009M. Alfonsi - CERN16 Magnet Goliath under test today Frascati is working on the field map file Proposed a week, from 4 th to 8 th of May, for all our tests: – delimitation of the range of the fringe field – PMTs test – AoB

31/03/2009M. Alfonsi - CERN17 Conclusions Gas pipes installed. Gas panel and leak test with He still to be done. Gas mixing racks designed Problem for lack of flammable gas sensor Sketch of the global setup under completion Magnet test week proposed