Straw bi-weekly meeting

Tuesday 23 Jun 2026, 09:00 → 10:40 Europe/Zurich

20/1-004 (CERN)

Hans Danielsson (CERN)

Long prototype:

Vincent - drawings are getting slowly signed, only a few single drawings and all assembly drawings are left

Johan - modification of the HV board was made, the project will remain open with William

            - need to review the position of holes on the HV board

Zuzana, Hans - parts to be ordered from Fernando - spacer fixation guards, spacer fixation plates, cone screw

                          - parts to be made by Tonio & Francois - aluminium cover, support pin modified

 

Intermediate prototype:

Michal, Peter - already finished scan with Fe55, moving the source along the straws, slow RO on one side, termination board on the other side, normalized to the number of counts 

                         - currently doing HV scan with FE55 source in one place, measuring the amplitudes

Johan - new mirror HV board should be ready soon, two incoming RO boards to be ready in 2 weeks

 

New projects:

Beth - tracker for PADME - need to measure momentum of electrons in vacuum, need 100um precision on the position (per chamber), need to know the rate to see if straws are a viable option

                                             - magnet bore height 205mm, width 435mm - very short straws

Michal - FCC - straws are considered for Allegro, straws need to be 5m long, currently considering D=1cm

                        - requirements: momentum resolution O(50GeV) sigma/p ~ 0.2%, transparent detector, 100um space resolution, PID needed (pion/kaon separation) - dN/dx or dE/dx required

 

 

09:00 → 10:40 Updates