Preparing for science run 1 of MiniGRAIL

被引：18

作者：

de Waard, A

Bassan, M

Benzaim, Y

Fafone, V

Flokstra, J

Frossati, G

Gottardi, L

Herbschleb, CT

Karbalai-Sadegh, A

Kuit, K

van der Mark, H

Minenkov, Y

Oonk, JBR

Pallottino, GV

Pleikies, J

Rocchi, A

Usenko, O

Visco, M

机构：

[1] Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands

[2] Univ Roma Tor Vergata, Dipartimento Fis, I-00173 Rome, Italy

[3] INFN Roma 2, Rome, Italy

[4] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[5] TU Twente, Low Temp Div, Enschede, Netherlands

[6] Ist Nazl Fis Nucl, Gran Sasso Natl Labs, Assergi, Italy

[7] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[8] INFN Roma 1, Rome, Italy

[9] CNR, IFSI, Rome, Italy

来源：

CLASSICAL AND QUANTUM GRAVITY | 2006年 / 23卷 / 08期

关键词：

D O I：

10.1088/0264-9381/23/8/S11

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the eighth cryogenic run of MiniGRAIL, which is planned to be the first science run. Three new capacitive transducers were mounted on the sphere, all coupled to superconducting transformers and a double-stage SQUID amplifier. All SQUID modules had a noise level between 1 and 2 mu Phi(0) Hz(-1/2) at 4 K in separate test runs. The detector was upgraded with a complete data acquisition and data storage system, and a data analysis program for millisecond burst signals was written using a matched filter. Two cosmic-ray detectors were built and installed on the roof above MiniGRAIL as a veto for cosmic rays. A test run was done, but failed because of bad electrical isolation of the transducer electrode at low temperatures. A new cool-down is currently going on. With an already obtained sphere temperature of 65 mK and a SQUID noise of 100h, the expected sensitivity should be 4 x 10(-22) Hz(-1/2).

引用

页码：S79 / S84

页数：6

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