First operation of an ALICE OROC operated in high pressure $${\text {Ar-CO}}_2$$ and $$\text {Ar-CH}_4$$
First operation of an ALICE OROC operated in high pressure $${\text {Ar-CO}}_2$$ and $$\text {Ar-CH}_4$$
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ALICE OROC 首次在高压 $${ ext {Ar-CO}}_2$$ 和 $$ ext {Ar-CH}_4$$ 下运行
DOI：
10.1140/epjc/s10052-023-12297-x
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发表时间：
2023
期刊：
影响因子：
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通讯作者：
Ritchie-Yates A
中科院分区：
文献类型：
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作者：
Ritchie-Yates A
需要新的中微子-核相互作用截面测量来充分改进核模型，以满足未来长基线中微子实验的灵敏度目标。一个充满高压气体的时间投射室（TPC）是一个很有前途的探测器，可以用来表征用于此类实验的中微子源。充满气体的TPC是测量低能粒子的理想选择，低能粒子在气体中比在固体或液体探测器中运动得更远，使用高压会增加目标密度，导致更多的中微子相互作用。我们研究了ALICE TPC的多线比例室（MWPCs）作为高压气体TPC读出室的适用性。这些腔室以前是在大气压下操作的。我们报告了ALICE TPC外部读出室（OROC）在高达4.2 bar绝对压力（barA）下的成功操作，混合物的含量在2.8到5.0%之间，到目前为止，（90-10）的绝对压力高达4 bar。利用源诱导的信号测量了OROC的电荷增益。在4.2 bar时获得的最大增益为4.0%，阳极电压为。在4 barA电压为10%时，观察到阳极电压的增益。我们推断，在10 barA（未来中微子实验的一个有趣的压力）下，阳极电压为（）时可以获得5000 inwith 10%（10,000 inwith）的增益。
New neutrino–nucleus interaction cross-section measurements are required to improve nuclear models sufficiently for future long baseline neutrino experiments to meet their sensitivity goals. A time projection chamber (TPC) filled with a high-pressure gas is a promising detector to characterise the neutrino sources used for such experiments. A gas-filled TPC is ideal for measuring low-energy particles, which travel further in gas than in solid or liquid detectors and using high-pressure increases the target density, resulting in more neutrino interactions. We examine the suitability of multiwire proportional chambers (MWPCs) from the ALICE TPC for use as the readout chambers of a high-pressure gas TPC. These chambers were previously operated at atmospheric pressure. We report the successful operation of an ALICE TPC outer readout chamber (OROC) at pressures up to 4.2 bar absolute (barA) withmixtures with acontent between 2.8 and 5.0%, and so far up to 4 bar absolute with(90-10). The charge gain of the OROC was measured with signals induced by ansource. The largest gain achieved at 4.2 bar wasinwith 4.0%with an anode voltage of. Inwith 10%at 4 barA, a gain ofwas observed with anode voltage. We extrapolate that at 10 barA, an interesting pressure for future neutrino experiments, a gain of 5000 inwith 10%(10,000 inwith) may be achieved with anode voltage of().