Speakers:
Antonio Goncalves Martins De Oliveira
(CERN),
Francois Garnier
(CERN),
Hans Danielsson
(CERN),
Johan Morant
(CERN),
Michal Zamkovsky
(Universite Catholique de Louvain (UCL) (BE)),
Peter Lichard
(CERN),
Vincent Clerc,
Zuzana Kucerova
(CERN)
Zuzana:
- we are looking for companies to manufacture the connectivity pieces (ultem, brass)
- already received a few quotes for ~30 pieces, but the price per piece is too high
- we will ask for pieces for both the intermediate and the long prototypes, but in two batches
Michal:
- Gas leak test with the flange passed.
- Gas leak test with the readout board not passed - the centralization pins are located directly at the o-ring.
- The HV board should be modified to have the centralization pins outside the o-ring area and the HV power supply cables further away from the passing signal in the read-out board.
- Pressurization test with 3bars performed on the long straws from SEFAR - two straws are not good, two can hold pressure - to be understood if there is a smaller leak or not.
- For the pressurization test, the end caps used previously were modified to fit the smaller diameter of the SEFAR straws.
- End caps ordered from the CNC-Proto - first 10 pieces of diameter 4.75 mm should arrive in 4 weeks, we have an option for another 170 pieces.
Johan:
- update on FE boards (2 channels work, 2 channels are unstable)
- need to verify the position of alignment holes and the size of the board for the short prototype
Hans:
- we ned to measure the precision of the xy micro-alignment tool