-- EstherBabetteMenz - 2023-11-22

Particle Detectors at CRYRING@ESR

There are currently several particle detector setups in operation at CRYRING@ESR, located downstream from the ElectronCooler (YR03) and the experimental section (YR09). They used to detect product ions that have undergone a change in their charge state.

At the electron cooler, the YAP:Ce scintillation detector (YR03DS1HA) sits directly behind the first dipole magnet and is used to detect light ions in low charge states (including neutral reaction products). The CEM detector (YR04DS2HA) is located further down the straight section (YR04) and is used for heavier, highly charged ions (up to and including He-like uranium). Both detectors are used in recombination experiments at the electron cooler, including dielectronic recombination measurements.

All detectors have self-contained vacuum chambers that can be closed of from the main ring vacuum while the detectors are not in use or to facilitate easy replacement of components (e.g. scintillation crystals). Information on the vacuum read-out and interventions can be found here. The drives used to move the detectors in and out of the main ring are explained here.

Scintillation detectors

The scintillation detectors are based on YAP:Ce (yttrium aluminium perovskite doped with cerium).

CEM detectors

Detectors based on channel electron multipliers (CEM) are used to detect heavy, highly-charges ions (HCI).

List of detectors

Name	Type	Location	Comments
YR03DS1HA	scintillation detector	YR03, dipole downstream of the ElectronCooler, ring outside
YR04DS2HA	CEM detector	YR04, straight section downstream of the ElectronCooler, ring outside	currently not in operation
YR09DD1AS	scintillation detector	YR09, dipole downstream of the experiment section, ring outside
YR10DD1AS	CEM detector	YR10, straight section downstream of the experiment section, ring outside
YR09DD1IS	scintillation detector	YR09, dipole downstream of the experiment section, ring inside	not installed yet