Feasibility Study of an Alcohol-Based Liquid Scintillation Detector and Its Application

Table 1

Samples used for synthesizing alcohol-based liquid scintillator. In the standard sample (R), used as a reference, 3 g/l PPO was dissolved and 30 mg/l bis-MSB was mixed as the second WLS in the LAB and UG-F. The S samples indicate alcohol-based LS and NE samples based on 2-ethoxyethanol solvent.

Sample	Composition of solvent (%)	Fluor, secondary WLS	Note
S1	Alcohol : water (50 : 50)	PPO 6 g/l	Clear, soluble (marginal)
S2	Alcohol : water (70 : 30)	PPO 21 g/l	Clear, soluble
S3	Alcohol : water (70 : 30)	PPO 30 g/l, bis-MSB 300 mg/l	Insoluble
S4	Alcohol : UG-F (70 : 30)	PPO 3 g/l, POPOP 30 mg/l	Clear, soluble
S5	Alcohol : UG-F (70 : 30)	PPO 3 g/l, bis-MSB 30 mg/l	Clear, soluble
NE0	2-Ethoxyethanol : UG-F (70 : 30)	PPO 3 g/l, bis-MSB 30 mg/l	Clear, soluble
NE1	2-Ethoxyethanol : UG-F (30 : 70)	PPO 3 g/l, bis-MSB 30 mg/l	For PSD check
NE2	2-Ethoxyethanol : water (100 : 0)	PPO 15 g/l, bis-MSB 300 mg/l	Clear, soluble (bis-MSB extreme)
NE3	2-Ethoxyethanol : water (90 : 10)	PPO 15 g/l, bis-MSB 60 mg/l	Clear, soluble
NE4	2-Ethoxyethanol : water (70 : 30)	PPO 21 g/l	Clear, soluble
NE5	2-Ethoxyethanol : water (70 : 30)	PPO 21 g/l, bis-MSB 120 mg/l	Insoluble
NE6	2-Ethoxyethanol : water (50 : 50)	PPO 1 g/l	Clear, soluble
NE7	2-Ethoxyethanol : water (30 : 70)	PPO 1 g/l	Clear, soluble
NE8	2-Ethoxyethanol : water (20 : 80)	PPO 1 g/l	Clear, soluble
NE9	2-Ethoxyethanol : water (10 : 90)	PPO 1 g/l	Insoluble
NE10	2-Ethoxyethanol : water (10 : 90)	PPO 0.5 g/l	Insoluble
NE11	2-Ethoxyethanol : water (10 : 90)	PPO 0.3 g/l	Insoluble (first clear, but precipitate in the end)
NE12	2-Ethoxyethanol : water (10 : 90)	PPO 0.2 g/l	Barely soluble
NE13	2-Ethoxyethanol : water (10 : 90)	PPO 0.2 g/l, bis-MSB 20 mg/l	Clear, soluble (marginal)
NE14	2-Ethoxyethanol : water (10 : 90)	PPO 0.1 g/l, bis-MSB 10 mg/l	Clear, soluble
R	LAB : UG-F (90 : 10)	PPO 3 g/l, bis-MSB 30 mg/l	0.5% Gd (clear, soluble); Reference sample