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HES-HKS meeting. 2009/2/24 T.Gogami. EHODO timing resolution. Run54. Run54(last week) Run56 difference Change HV With Slewing correction Run54 164[ ps ](last week). ADC. Run56. Setup of Run56. EHODO timing resolution(Run56). With Slewing correction. 2 ch. 1ch. 3 ch.
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HES-HKS meeting 2009/2/24 T.Gogami
EHODO timing resolution Run54 • Run54(last week)Run56 difference Change HV • With Slewing correction Run54164[ps](last week) ADC Run56 Setup of Run56
EHODO timing resolution(Run56) • With Slewing correction 2ch 1ch 3ch 4ch σ=161[ps] ADC vs TOF TOF
Former EHODO timing resolution(Run65) • With Slewing correction 1ch 2ch EHODO(used in previous experiment) 3ch 4ch σ=171[ps] ADC vs TOF TOF
EHODO timing resolution(Run56) 1ch • Cut coercively ADC 1ch Then, TOF σ=150[ps] 2ch Cut coercively 3ch 4ch If the slewing correction could be more better, TOF sigma~=150[ps].
UV curing glue • UV curing glue Has not arrived… So I tried to bond PMT and scintillator(HTOF2Y) using the glue used Hampton group. Mission failed .. (Exp. date 20Jan2009)
summary • EHODO Timing resolution TOF sigma~=160[ps] (sigma~=150[ps] ) • UV curing glue It has not arrived. I can’t work on assembling of EHODO & HTOF1Y. To do ・EDC ・Check assembled EHODO’s PMTs ・Taking data of EHODO, WC
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