Minutes from the ISOLDE Physics Group meeting on April 8th, 2015
No comments to the minutes of the PG meeting held last week.
Technical news
- GPS:
- Beam was delivered to beamlines during the separator course for users.
- The power supplies applying voltage to vacuum valves suffered a short circuit, affecting the valves operation. Fixed.
- The problem with the GLM/GHM deflectors was identified in the encoder. Replaced and awaiting further tests.
- Faraday cup FC490 readout shows a factor of 2 higher current than the immediate previous cup. Under investigation.
- HRS:
- The transmission of the RFQ has deteriorated since the beginning of the year. Under investigation.
- The laser light shutter for HRS was installed at the end of March.
- Targets:
- The tape station software stopped working last week. Fixed.
- A new shipment of 20 kg of UCx for targets has been delivered.
- The new ventilation for the target area is ready for UCX targets.
- RILIS:
- Successful test of stable laser singly and doubly ionized Ba beams at VADIS.
- Test of Te beams over Easter weekend, found auto ionizing states.
- REX-ISOLDE:
- A new emittance meter installed after EBIS.
- All REX cavities (not the 9-gap) are now cooled.
- REX-TRAP is not yet ready for ISOLDE beam. Under investigation.
Safety
- Tests of radiation alarms at ISOLDE hall ongoing.
- Access to ISOLDE:
- The jura side tourniquet is working. The will be permanently closed soon.
- The B508 access door is not permanently locked yet.
- Due to the B508 access state, the card reader at the jura side ISOLDE door will be kept.
- The mechanical workshop passed the safety inspection.
- Basic operation instructions for the machines will be available.
- Cupboards and tools are being moved in this week.
- An acknowledgement form (attached) from the home institutes will be needed to operate the machines.
- Safety googles and safety shoe-covers are required in the workshop.
AOB
-First schedule of the year: (http://isolde.web.cern.ch/sites/isolde.web.cern.ch/files/wk15.pdf).
-The automatic tuning software is ready to use. Contact Tim Guiles for more information.
-The next meeting will take place at 14:00 Wednesday next week (8st April 2015) followed by a seminar by Xiaofei Yang on "Laser double resonance spectroscopy measurement of 84-87Rb isotopes trapped in super fluid helium" (https://indico.cern.ch/event/383493/).
Minutes taken by MMF