INDICO-FNAL (Indico)



IOTA ELECTRON LENS MEMO12/6/2019Antti KolehmainenAccess for transport and installation:No overhead crane with high load capacity!Movable bridge cranes over the ring available – MAX CAPACITY 1000 lbs!Models from Lucy/Linda, if requirredFork lift have been used for installation of heavier componentsFork lift can probably be manipulated next to IOTA section for the Electron lens.Current corridors access ~ 5 feet for any transportationSpace must be checked after the proton source installation – prepare to lift components over the proton lineWe must be able to transport the magnets separatelyAlign and fix magnet positions in the lab, transport in pieces to IOTA and re-assembleMagnets:Shielding to be added over the solenoid(as for the E-gun test station main solenoid). Lowers transport weight, no structural requirementField requirement in main solenoid up to 0.7 – 0.8 T. This must be discussed further!Bores depending on the bake-out jackets(to be defined) and on the instrumentation for the main solenoidOrbit corrector proposal to be modelledSupports:Study the use of jack assembly for dipole magnets – models from Lucy/LindaJacks to be bolted to the steel beamStudy support with threaded rods in parallelCreate iron base plate, bolt and counter-drill pins to fix the magnet positions. Dismantle components, if required for transport and installation. Creates bottom plate for the shielding in parallel.Electron gun:Modify phase3 proto E-gun for IOTA.Create additional vacuum chamber for the E-gun test station to be able to test this gun version.All guns planned for IOTA E-lens have the same vacuum flange Several chambers are still required if/when the guns have different cathode – vacuum flange distances.Collector:Use TEL2 collector, is available and vacuum OKCollector is fixed to the Collector Solenoid frame!Bellow required for vacuum connection, Existing TEL2 collector bellow has wrong flange, design new bellow to fix collector to Instrument Station.Sufficient space for vacuum connection must be created, this gap must be analysed for the beam dynamics.Instrumentation Station must be as close as possible to the Transfer SolenoidCollector to be modelled, based on original TEL2 drawings.Cover for the Collector might be available, in alu with Makrolon(?) window at the back.Vacuum system:Flange connections with 316L rods and Si-bronze nuts. Use these Fermilab standard components. Sizes required from Lucy/Linda.Bake-out jackets were discussed, we reserve 7 mm radial space for them just in case.NEG-coating was discussed. Whether it will be used remains to be decidedActivation temperature for NEG is around 250 C, temperature must be slightly elevated for every successive activation bake-out. Number of activations is limited(to be checked – Antti)Coils resin impregnation max temperature defined for ELENA at CERN is 80°CThis requires a gap between the baked chambers and the coils, should be studied in detail if bake-out will be used.Pumping was discussedPumping ports behind the Electron Gun have been added.We study the possibility to add ELENA type pumping connection on the Y-Chamber.Space for the orbit corrector yoke could be up to 80 mm around OD 2” drift on the Y-chamberFlanges for Electron Lens connection could be moved outside the quadrupoles BUT ONLY if current lay-out is impossible(quads can be opened like in ELENA)Instrumentation:Study radial feedthroughs for the main solenoid instrumentationFermilab feedthrough supplier details from Lucy/LindaBoth the feedthrough and the connector used on the BPM are desired1 kV from feedthrough desired, 500 V might do3 pairs of strip electrodes might do, BPMs to be used for striping as well.Antenna information to be delivered by Giulio.Check if multi-pin feedthroughs are available for strip electrodes, used for the E-gun test station at Fermilab!?Instrumentation station model must be completed will all elementsCamera assemblyPumping access at the cross bottom must be checked, models of existing components available?Models from Lucy/LindaDoes Instrumentation station cross has a support interface, if none, this must be created?Services:Main dimensions for the cable trays and water piping next to support beams required for the integration model, Giulio/Lucy/Linda.TEL2 Solenoids’ supports can be moved a bit back for spaceWater connections must be confirmed, and if req’d new ones to be added to water piping.There’s 11 coils that require waterConnector type required, Lucy/LindaDesired connection positions for electricity and instrumentation to be defined, Fermilab.Documentation CAD document formats accepted at FermilabNo CERN drawing codes -> No proper life-cycle management at CERN(can we create a code?) ................
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