# Liverpool Commissioning ```mermaid gantt title Overall schedule axisFormat %m section Setup installation crate preparation (CERN) :a1 , 2020/09/01 , 2020-10-20 crate shippement (CERN to Liverpool) :a2 , 2020-10-21 ,1w crate delivery (Liverpool) :a3 , after a2 ,10d rack preparation (Liverpool) :a0 , 2020-09-14 , 2020-10-28 crate installation (Liverpool) :a4, after a3 , 1w section Electronics Pre-Commissioning Flange insertion (??? John's Gantt): TDR :k0, 2020-11-10, 1w Loom installation (??? John's Gantt): Loom testing (LV):k1, after k0, 2d HV :k2, after k1, 2d NTC :k3, after k2, 2d PT100 :k4, after k3, 2d section Cooling Pre-Commissioning cleaning LUCAZ : kk0 , 2020-11-01 , 2020-11-15 Local box to detector :b0, 2020-11-20, 3d Long by-pass :b1, after b0, 3d Short by-pass :b2, after b1, 3d Boiling training :b3, after b2, 2d section Cooling Pre-Commissioning with module Meeting with module production sites :b31, after b3, 1d **Review that module can be mounted dismounted safely** :b32, after b31, 1d Longest loop (2 pre-prod modules) :b4, 2020-12-01, 3d Longest loop module test:b41, after b4, 1d Shortest loop (2 pre-prod modules) :b5, after b41, 3d Shortest loop module test:b51, after b5, 1d Longest and shortest (4 pre-prod modules) :b6, after b51, 2d Stability (4 pre-prod modules) :b7, after b6, 1d section Module installation Module C1 :after b7 , 12d Module C2 : 24d Review : 1d Module C3 : 24d ``` ## TODO on this document * 17/09/2020 Vinicius to check if all the detailed instructions are there to actually perform the tests * 21/10/2020 Vincius to make a little drawing to explain the cooling setup in liverpool (for the cooling group to help). * 29/10/2020 Vinicius to contact Tony and describe the electronics pre-commissioning tests, describe them, and **assign some duration for the test** (and their prep). * 29/10/2020 Vinicius to setup the CO$_2$ interlock * 29/10/2020 Kerian do the manip to avoid the galvanic connection before installing the cables * 30/10/2020 Wiktor to explain exactly of the longest/shortest loop the test before Nov 28th ---- ## How to comment on this document Please use the following format for comments > feel free to comment [name=Victor Coco] [time=Wed, Oct 14, 2020 9:59 PM] >> and to answer comments [name=Victor Coco] [time=Wed, Oct 14, 2020 10:20 PM] >> ## Electronics Pre-Commissioning ### Test the OPB insertion after remove the ground issue ### TDR 1. Connect the tape to VFB 2. test for reflection. 3. then insert test again. ### Loom testing 1. resistance on each path ### Test of the NTC 1. Check with Tony what he had in mind, TDR or resitance? ### Check the HV chain 1. Continuity. 2. Conect the HV PS, do ramp up and check the leakeage current. (write down the current). ### Check the PT100 1. Record the 4 temperatures of the PT100 clamps. ### Check for shorts. 1. Check if there is a short between the pcb ground and the metalic assemble (Value should be around M G OHM). 2. The clamps for the VFB, the data tapes, ... could create shorts due to the small width of the top isolation layer of all the PCBs. ### Interlock * Mounting * Definition of the threshold (-10deg and 30deg threshold for cold and warm operation) * CO$_2$ safety system: the pressure measurement from the pump , if above threshold, turn ON and OFF the 24V that control the electrovalve (purchased by Vinicius) that control the pneumatic valves (that are on the manifold that came from Raphael) that control the swagelock safety valve (which is already at Liverool) * to understand if the CO2 part can be connected directly to the HW interlock (old VSS) or if it is separated. ## Check the valves and leak test of cooling system - [x] check that the valves operates in "normal condition" ie with vacuum in tertiary vacuum + pressure in the tubes. - [ ] check with helium from LUCASZ and sniffer on pump leak tightness of entire system with bypasses in place. This test to be repeated after each module is installed to check the VCR connection - [ ] after flange installation final check for leak tightness of flanges before module installation ## Installation of the crate ### LV - [x] installed - [x] wired - [ ] Test control sofware - [ ] Test interlock ### HV - [x] figure out what will be used. - [ ] build hv patch panel - [ ] test control software - [ ] test interlock ### Setup a safety system - [ ] add closure of the safety valve in case of pressure rise - [ ] build valve safety system ### ECS software - [ ] installed ## Generic procedure description ### Optimising a module/cooling loop working point Ideally part of theis procuedure is to be scripted as it will be often repeated :::info 1. LUCAZ in cold mode. 2. Check that the boiling happens in the proper place (in all case after the gasket, ideally between the module inlet PT100 and the VP3 hybrid NTC) * Procedure to check where is the boiling **Action Oscar, Wiktor to describe it** * Tune the pre-heater accordingly (warning: pre-heater power scales with the number of modules) * If not possible to change without affecting other modules then play with the gasket size. If it does not work call Wiktor and Oscar for backup plan #2. 3. Store the temperature profile (PT100, NTC, bandgap). 4. Turn ON the load (module LV or dummy load) 5. Check boiling point again. 6. Store again the temperature profile. 7. Register the $\Delta$ P for the used flow ::: ### Logging the temperatures * **Action Liverpool** what to log / how to log (taking into account the NTC board limitation and the fact the PT100 board won't be available at the very begining) ## Cooling Pre-commissioning ### Pre-requisite * Being able to measure the Delta P and temperature at the inlet and outlet of the detector. * Having a good control of the heat losses before the detector, and if needed compensate with a bypass. * Crate installed (see installation of the crate) * Pre-heater ### 0-Local Box to Detector **Not needed anymore since the pressure is now measured at the detector inlet** :::info 1. What to measure ? * Flow/DP with a closed loop on the concentric lines taking CO2 to and from detector 2. How to measure ? * Flow CO2 through the closed loop at several flows, few temperatures, record DP achieved. What about: 10, 0, -20,-30C. Flows : 3, 5, 10 g/s? 3. Why ? * Important to decouple from other DP measurements later on. Every DP measurement will be compounded by the transmission line and as such we need to know what that is for future reference. ::: ### 1-Long by-pass :::info 1. What to measure ? * Flow/Dp characterization both warm and cold. (Maybe more measurements? 15, 0,-10,-20,-30 degreeC at detector) 2. How to measure ? * Initial gasket size ~600 [um] * With small bypass closed 3. Note the DeltaP should be around 10bar (real number should come from the Dp of the detector once it is mounted but for not knowing 10bar should be OK ==> to check ::: ### 2-Small by-pass :::info 1. What to measure ? * Flow/Dp characterization both warm and cold. 2. How to measure ? * Initial gasket size ~150 [um] (at the top of the loop initially installed in the module feet then moved to final position) * Capillary as in the design(ID: 0.57mm) 3. Note With big bypass open and then subtract from total flow to get the small bypass Knowing that at this point we don’t know exactly what one loop gives… ::: ### 3-Having a procedure for module mounting/dismounting - [ ] Done ### 4-Boiling training on longest loop :::info 1. What to measure ? * Flow Dp characterization both warm and cold. 2. How to measure ? * 1 not production module (proper load) * Initial gasket size ~150 [um] * Follow "Procedure for optimising a module/cooling loop working point" 3. Note None ::: ### 5-Longest loop :::info 1. What to measure ? * Flow/Dp characterization both warm and cold. * Safety Volume temperature. 2. How to measure ? * gasket size ~150 [um] * bypass using return capillary size bridge (ID:0.87[mm]) * Check the boiling position before turning on LV, see "Procedure for optimising a module/cooling loop working point" * for each flow point [0.6,0.4,0.3,0.2] tune pre-heater to get the proper boiling position * use 2 non production modules but with proper loop (will anyway need to install them) 3. Note There was one idea here to create a modified expansion volume with a safety valve (pressure relief valve if P > 100 bar for instance) to check that the expansion volume wasdesigned with the right volume/heat source (vessel). This test is quick if all parts are available and installed (few hours). Can it still be done? To be understood is this is to be done with small by-pass open or not ::: ### 6-Longest loop Module test :::info 1. What to measure ? * run the module test sequence 2. How to measure ? * https://www.overleaf.com/project/5e6f8dfb27e17d00012b3357 3. Note Training of the module procedure ::: ### 7-Shortest loop add a non production module wrt to previous procedure :::info 1. What to measure ? * Flow/Dp characterization both warm and cold. * Safety Volume temperature. 2. How to measure ? * gasket size ~150 [um] * bypass using return capillary size bridge (ID:0.87[mm]) * Check the boiling position before turning on LV, see "Procedure for optimising a module/cooling loop working point" * for each flow point [0.6,0.4,0.3,0.2] tune pre-heater to get the proper boiling position * use 2 "powerable" modules (will anyway need to install them) 3. Note None ::: ### 8-Shortest loop Module test :::info 1. What to measure ? * run the module test sequence 2. How to measure ? * https://www.overleaf.com/project/5e6f8dfb27e17d00012b3357 3. Note Training of the module procedure ::: ### 9-Shortest+longest loop :::info 1. What to measure ? * Flow/Dp characterization both warm and cold. * Safety Volume temperature. 2. How to measure ? * same setup than the [shortest loop](https://codimd.web.cern.ch/B4WHgGAeTcqh3dUn-NjB5A?both#Shortest-loop) and [longest loop](https://codimd.web.cern.ch/B4WHgGAeTcqh3dUn-NjB5A?both#Longest-loop) test, now check that the pre-heater setup is fine with both loop. 3. Note the pre-heater setting needs to be scaled up by the number of module. ::: ### 10-Stability test :::info 1. What to measure ? * Cooling stability with one loop on the other off and vice-versa * 1 module OFF 3 other on 2. How to measure ? * Same setup than [here](https://codimd.web.cern.ch/B4WHgGAeTcqh3dUn-NjB5A?both#Shortestlongest-loop) * Check the boiling position before turning on LV, see single module commissioning section * for each flow point [0.6,0.4,0.3,0.2] tune pre-heater to get the proper boiling position * then do the stability * use 4 "powerable" modules 3. Note We could also consider to add a long term stability test to the cooling commissioning (several hours) ::: **working document (raw)** https://docs.google.com/document/d/1F_lmnp0Fzj8VZEFF2L7SRhgpM4WdrI6UoWqwQEt8ELQ/edit?usp=sharing ---- ## Module cooling commissioning Overall procedure after cooling pre-commissioing is to opperate single loop (module at the begining) at the time (ie by-pass closed / longest and shortest loop closed). Correspond to MQC3 in: https://www.overleaf.com/project/5e6f8dfb27e17d00012b3357 This assumes the pre-commissioning tasks have been performed and two modules of the same cooling loop have been installed. For the first 6 modules it is expected each loop will be done in two steps: 1 module + blind gaskets then 2 modules. * Individual module property have been measured in the production site. Not necessarily the same working point but from module to module we should be able to see if one is off. * Perform the funtionnality/boiling check following "Procedure for optimising a module/cooling loop working point" with a Flow of 0.4. Note that depending on the number of modules in the system you may need to scale the pre-heater. * Perform stability test: Within a loop turn LV ON 1 module, LV OFF the next and swap, check for stability. * to be checked what it the best sequence in terms of thermal shock (but seems ok) ---- ## Module electrical commissioning Described in MQC1, MQC2 and MQC4 of https://www.overleaf.com/project/5e6f8dfb27e17d00012b3357 ## Halves cooling commissioning and halve electrical testing https://www.overleaf.com/read/nmqfgvswqsnh ```mermaid gantt title Overall schedule axisFormat %d section Setup preparation install new LV modules :a1 , 2021/11/01 , 2d prep PC/SW :a2 , 2021/11/02, 2d connection to the half :a3 , 2021/11/03, 1d test connection :a4 , 2021/11/04, 1d section Cooling commissioning tunning warm (inc. dp flow): b1, 2021/11/07 , 1d tunning cold (inc. dp flow) : b2, 2021/11/08 , 1d stability measurements: b3, 2021/11/09 , 2d [opt. ]stability with eol power: b4, 2021/11/11 , 1d section Electronic test noise / equalisation on all modules , control link: c1 , 2021/11/14, 3d prbs : c2 , 2021/11/17, 1d [opt.] cosmics: c3 , 2021/11/18, 1d ```