Charge collection measurements on slim-edge microstrip detectors

Mori, R.; Bruzzi, M.; Cartiglia, M; Christophersen, M.; Ely, S.; Martinez-McKinney, F.; Phlips, Bernard F.; Sadrozinski, H. F-W.; Fadeyev, V.

doi:10.1088/1748-0221/7/05/p05002

Cited by 12 publications

(7 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The IV curves were collected by using a Keithley 237 high voltage source measurement unit. We also collected charge collection data for these sensors; these measurements are presented in different publications [8,9]. A short summary is given below, section 2.5.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

“Scribing-Cleaving-Passivation” for High Energy Physics Silicon Sensors

Christophersen¹

2013

Proceedings of the 21st International Workshop on Vertex Detectors — PoS(Vertex 2012)

View full text Add to dashboard Cite

Future High Energy Physics (HEP) experiments will include silicon sensors because of their superior resolution, tracking, and vertexing performance. Silicon sensors normally have an inactive region along the perimeter of the sensor. This inactive area on the perimeter contains the guard rings that protect the active area from electrical currents and damage caused in the manufacturing of the device. These inactive areas can significantly degrade the performance of the closely arranged sensors for HEP instrumentation and need to be minimized. In this paper, we describe a scribe, cleave, and passivate (SCP) technique for the fabrication of slim edges. We present results for n-and p-type sensors with different sidewall passivations. The leakage current depends strongly on the type of sidewall passivation for p-and n-type silicon. Furthermore, the amount of sidewall damage does change the leakage current. We tested different scribing techniques. Some scribe damage can be removed by an additional silicon etch step after cleaving. We also applied the technique to large area n-type single-sided strip detectors and are working towards a fully automated process.

show abstract

Section: Resultsmentioning

confidence: 99%

“…We performed charge collections measurements for n-and p-type sensors. R. Mori et al [8] looked into the pulse height distribution of the signals from a beta source with the ALiBaVa system [18]. The sensors were n-type test devices from GLAST/Fermi production [10].…”

Section: Charge Collection Measurementsmentioning

confidence: 99%

“Scribing-Cleaving-Passivation” for High Energy Physics Silicon Sensors

Christophersen¹

2013

Proceedings of the 21st International Workshop on Vertex Detectors — PoS(Vertex 2012)

View full text Add to dashboard Cite

show abstract

“…The detectors are first laser scribed and cleaved then the edges are passivated using SiO 2 /Si 3 N 4 for n-type or Al 2 O 3 for p-type silicon. Good performance of the 'slim edge' sensors (IV curve and charge collection efficiency) has been reported [31]. The range detector will be assembled using 4 mm thick Polystyrene fast scintillator blocks ( Fig.…”

Section: Future Developmentsmentioning

confidence: 98%

Tracking for proton Computed Tomography

Civinini

2014

Proceedings of 22nd International Workshop on Vertex Detectors — PoS(Vertex2013)

View full text Add to dashboard Cite

In hadron therapy a highly conformed irradiation field is delivered to the target by precisely moving the particle beam and, at the same time, modulating its energy with the aim to cover the tumor volume with the requested dose sparing the surrounding healthy tissues as much as possible. To setup a robust treatment plan the Stopping Power (SP) map for each patient should be measured and the volume to be irradiated precisely located.To improve the precision of the SP map determination the use of a proton beam to perform a 'proton Computed Tomography' (pCT) could be the ideal solution. To be effective in reducing the uncertainties in dose spatial distribution, this novel method should keep the SP map spatial resolution below one millimeter.Tracking in presence of large multiple scattering will be discussed in these proceedings together with the concept of 'most likely path' (MLP). A generalization of the studies on this issue will be introduced with the aim to describe instrumental effects on the MLP spatial resolution.The pCT apparatus, based on a Silicon microstrip tracker followed by a calorimeter to measure single protons trajectory and their residual energy, will be reviewed with particular emphasis on the R&D ongoing on this subject and the results already obtained. New prototypes presently under construction, which will be suitable for pre-clinical studies, will be described too.

show abstract

“…Individual strip currents before and after cutting are essentially unchanged. In addition, we have found that the charge collection on the strips next to the slim edge is unchanged when compared to before cleaving [12]. Up to now, about 50 test structures with edge length up to 10 cm have been treated successfully with distances down to 14 μm between active area and edge.…”

Section: Tracker Design and Randdmentioning

confidence: 99%

Development of a head scanner for proton CT

Sadrozinski

Johnson

Macafee

et al. 2013

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

We describe a new head scanner developed for Proton Computed Tomography (pCT) in support of proton therapy treatment planning, aiming at reconstructing an accurate map of the stopping power (S.P.) in a phantom and, in the future, in patients. The system consists of two silicon telescopes which track the proton before and after the phantom/patient, and an energy detector which measures the residual energy or range of the proton to reconstruct the Water Equivalent Path Length (WEPL) in the phantom. Based on the experience of the existing prototype and extensive Geant4 simulations and CT reconstructions, the new pCT scanner will support clinically useful proton fluxes.

show abstract

Charge collection measurements on slim-edge microstrip detectors

Cited by 12 publications

References 9 publications

“Scribing-Cleaving-Passivation” for High Energy Physics Silicon Sensors

“Scribing-Cleaving-Passivation” for High Energy Physics Silicon Sensors

Tracking for proton Computed Tomography

Development of a head scanner for proton CT

Contact Info

Product

Resources

About