Gas R&D activities

Thursday 25 Jan 2024, 10:00 → 15:05 Europe/Zurich

20/1-004 (CERN)

Beatrice Mandelli (CERN)

Legend

• This is something reported or discussed
• [ ] This is something to do
• [x] This is something done

RPC Lab 256

• All the gas from China arrived (Mattia)
• Humidifier is dismounted for the moment to be put in the new rack (Mattia, Stef)
• Review of the status of the gaps (Mattia, Stef)
• Presentation of the ECOGAS RPC6 rate measured with pad (Mattia)
  • [ ] Check again the plot for the pad
  • [ ] Check for charge distribution
• [ ] Start with 30% CO2 to check currents and efficiency for GIF detectors (Stef)
  • [ ] Compare the efficiency with last test beam
  • [ ] Compare the currents with the last HV scan done at GIF++
• [ ] HFC test: summary slides of R-32 (Stef)
• [ ] Check empty bottles to send back
• [ ] Gas bottles: check for Ar + ppm of O2 or H2O for uRWELL characterization. Not ordering now, just to check availability (Stef)
• [x] Measure the length of the removed cable from GIF to understand how long we need the new cables (Mattia, Stef)
• [x] Check for availability of Fabio for 256 installation to be continued before starting

RPC GIF

• Cables ordered
• HV connectors ordered
• [ ] Test again F- accumulation on the gas system
• [ ] To start flushing N2
• [ ] Change HV cables
• [x] Restart at GIF changing the HV module and board

uRWELL

• [ ] Finish commissioning of mixer/gas system and monitoring
• [ ] Perform initial HV scans with premixed bottle
• [ ] Start using the available radioactive sources
• [ ] Check with RP the implications of having an X ray gun

GLASS RPC

• [ ] Make a summary of the material needed to build them

ISE R&D

• [ ] Take the material from 904
• [ ] Follow up measurements of ATLAS RPC

uLOOP

• [x] Check with Pieter and Stef the code
• [x] Order the cheap filter ⇒ price quotation requested
• [ ] Start drawing the electrical schema for Jonathan (Stef)
• [ ] Mechanical support to be used for EEE (Pieter, Stef)
• [ ] Ask Daniel which humidity sensor they have in DT (Gian)
• [ ] Check the filters for the Tracker GC in CMS (MCA)
• [ ] Set meeting with David

Analyses

• Modifications done on the CMS GC Tracker
• ISE measurements in ALICE: agreement on organization. Two times a week, with help from MID people when the system is working fine
• ALICE and CMS calibration bottles ordered for RPCs (4.5% isobutane only one available)
• [ ] Check alternatives to Emerson for IR ⇒ Stef, MCA
• [ ] Discuss with Ivan about presenting to the CMS mechanics conference
• [ ] LHCB RICH1 check the results about the tests of how much Air was present during the purifier emptying
• [ ] Software related: publish data from ALICE MID GC
• [ ] ISE measurements in ALICE: start couple of weeks before the run for having a reference
• [ ] Follow up with Florian for UV-VIS analyses

Recuperation systems

• Review of the SF6 recuperation
  • [ ] Check at which temperatures one should operatee the R-134a recuperation system if we recover the 87 ln/h of
  • [ ] How much energy is required to recuperate a certain amount of SF6
• (Related also to Analyses) CSC CF4 recovery still off because there is ~3% of Air (MCA)
  • [ ] Check if between 2022→2023 the Air amount was as current YETS
  • [ ] Check if 3% of Air is only N2 or also O2. The purifier should remove O2
  • [ ] Once analysis is done to publish on analyses websites
• [ ] Restart the R-134a one on Monday ⇒ ALL
• [ ] HF test with recuperated R-134a to be done
• [ ] Test absorber 13X for SF6/N2 separation (MCA)

Other

• GCMS: problems in connecting from PC. Ip address changed
• [ ] Mixer from ETH ⇒ sending a volume filled instead
• [x] Review the status of the humidifiers (linked) with GIF task above)
• [x] Check humidifier rust in other humidifiers at GIF and in MID ⇒ ASAP
  • [ ] Check CPV water and eventually go with the endoscope
  • [ ] For the moment, stop using Festo
• [ ] Ask LPh for help to clean up 256 and organize the space

Novec humidity test setup

Summer student:

• One for RPC, strong software skills: copy and paste. one Mattia, second to check
• Recuperation and gas analysis: MCA and Damiano
• Possibly one for uloop and monitoring tools for gas systems: Pieter, Gianluca

Software (from old meeting)

• [ ] Organize the required work for a possible rewrite of the backend of olefin
  • [ ] Understand how to organize gitlab
• [ ] Organize the storage of the data in a new dataframe
  • [ ] For muon signals
  • [ ] For gamma signals
• [ ] Signal level calculations
  • [ ] Simple: simple baseline, time, charge of a peak
  • [ ] To study: advanced baseline calculation
  • [ ] After pulses count
  • [ ] Avalanche and streamer charge integration and separation
  • [ ] Try to calculate charge of each gamma signal
• [ ] Aggregating statistics calculations
  • [ ] calculate features only from central strips
  • [ ] Gamma cluster rate calculations

10:00 → 10:10 LAB status

Speakers: Mattia Verzeroli (Universite Claude Bernard Lyon I (FR)), Stefania-Alexandra Juks (Université Paris-Saclay (FR))

ECOGAS check.pdf

W4_R&D.pdf

10:10 → 10:20 GIF++ status

Speakers: Mattia Verzeroli (Universite Claude Bernard Lyon I (FR)), Stefania-Alexandra Juks (Université Paris-Saclay (FR))

10:20 → 10:30 Analyses

Speakers: Maria Cristina Arena (Pavia University and INFN (IT)), Mattia Verzeroli (Universite Claude Bernard Lyon I (FR)), Stefania-Alexandra Juks (Université Paris-Saclay (FR))

Weekly summary 25_01_2024.pdf

10:30 → 10:40 Recuperation systems

Speakers: Amin Bouzaiene (Politecnico di Torino (IT)), Maria Cristina Arena (Pavia University and INFN (IT)), Mattia Verzeroli (Universite Claude Bernard Lyon I (FR)), Stefania-Alexandra Juks (Université Paris-Saclay (FR))

SF6 RECOVERY PLANT (1).pdf

SF6 RECOVERY PLANT (1).pptx

Sf6 recuoeration