The ATLAS silicon pixel detector is the innermost tracking device of the ATLAS experiment at the Large Hardon Collider, consisting of more than 1700 modules for a total sensitive area of about 1.7 m2 and over 80 million pixel cells. The concept is a hybrid of front-end chips bump bonded to the pixel sensor. The elementary pixel cell has 50 μm x 400 μm size, providing pulse height information via the time over threshold technique. Prototype devices with oxygenated silicon sensor and rad-hard electronics built in the IBM 0.25 μm process have been tested and maintain good resolution, efficiency and timing performances even after receiving the design radiation damage of 1015 neq/cm2.
Developments of the ATLAS pixel detector / A. Andreazza. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 535:1/2(2004 Dec 11), pp. 357-361. (Intervento presentato al 10. convegno International Vienna conference on instrumentation tenutosi a Vienna nel 2004) [10.1016/j.nima.2004.07.154].
Developments of the ATLAS pixel detector
A. AndreazzaPrimo
2004
Abstract
The ATLAS silicon pixel detector is the innermost tracking device of the ATLAS experiment at the Large Hardon Collider, consisting of more than 1700 modules for a total sensitive area of about 1.7 m2 and over 80 million pixel cells. The concept is a hybrid of front-end chips bump bonded to the pixel sensor. The elementary pixel cell has 50 μm x 400 μm size, providing pulse height information via the time over threshold technique. Prototype devices with oxygenated silicon sensor and rad-hard electronics built in the IBM 0.25 μm process have been tested and maintain good resolution, efficiency and timing performances even after receiving the design radiation damage of 1015 neq/cm2.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
