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detectors [2018/02/15 12:44]
pereira [Cathode Readout Drift Chambers (CRDC)]
detectors [2018/08/10 20:33] (current)
pereira
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 ===== Hodoscope ===== ===== Hodoscope =====
-Cs(Na) hodoscope detector located downstream of the [[Detectors#​Plastic scintillators|E1 scintillator]] is used to measure the total kinetic energy of implanted nuclei, allowing the identification of different charge states. An additional use recently tested is the measurement of isomer gamma-rays emitted from implanted nuclei. ​+CsI(Na) hodoscope detector located downstream of the [[Detectors#​Plastic scintillators|E1 scintillator]] is used to measure the total kinetic energy of implanted nuclei, allowing the identification of different charge states. An additional use recently tested is the measurement of isomer gamma-rays emitted from implanted nuclei. ​
  
 The hodoscope is composed ​ 32 sodium-doped cession iodide CsI(Na) scintillating crystals manufactured by [[http://​www.scintitech.com/​|ScintiTech]]. Each crystal is 5.1 cm-thick, has an active area of 7.6 cm x 7.6 cm, and is attached to a photomultiplier ([[https://​www.hamamatsu.com/​jp/​en/​R1307.html|Hamamatsu R1307]]). The photo-cathodes are made of a bi-alkali material with a transmission peak at 420 nm. The 32 crystals are arranged in eight rows of 4 crystals each so as to cover approximately the same solid angle than the [[Detectors#​Cathode Readout Drift Chambers (CRDC)|CRDCs]]. The frontal and lateral sides of each crystal are covered with two 150-µm thick layers of a white Teflon reflective material to provide light shielding between the crystals. The photocathodes are connected to a [[https://​groups.nscl.msu.edu/​nscl_library/​manuals/​caen/​MOD.N568B.pdf|CAEN N568B]] 16-channel shaper/​amplifier,​ followed by a [[https://​groups.nscl.msu.edu/​nscl_library/​manuals/​phillips/​7164H.pdf|Phillips 7164H]] 12-bit ADC. The signals from the crystals are gain-matched to a middle position in the ADC spectra by varying the biases of each photocathode. ​ The hodoscope is composed ​ 32 sodium-doped cession iodide CsI(Na) scintillating crystals manufactured by [[http://​www.scintitech.com/​|ScintiTech]]. Each crystal is 5.1 cm-thick, has an active area of 7.6 cm x 7.6 cm, and is attached to a photomultiplier ([[https://​www.hamamatsu.com/​jp/​en/​R1307.html|Hamamatsu R1307]]). The photo-cathodes are made of a bi-alkali material with a transmission peak at 420 nm. The 32 crystals are arranged in eight rows of 4 crystals each so as to cover approximately the same solid angle than the [[Detectors#​Cathode Readout Drift Chambers (CRDC)|CRDCs]]. The frontal and lateral sides of each crystal are covered with two 150-µm thick layers of a white Teflon reflective material to provide light shielding between the crystals. The photocathodes are connected to a [[https://​groups.nscl.msu.edu/​nscl_library/​manuals/​caen/​MOD.N568B.pdf|CAEN N568B]] 16-channel shaper/​amplifier,​ followed by a [[https://​groups.nscl.msu.edu/​nscl_library/​manuals/​phillips/​7164H.pdf|Phillips 7164H]] 12-bit ADC. The signals from the crystals are gain-matched to a middle position in the ADC spectra by varying the biases of each photocathode. ​
detectors.txt · Last modified: 2018/08/10 20:33 by pereira