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Title: On the massless gap'' adjustment of detected energy for passive material in front of a calorimeter

Abstract

I have designed a correction scheme for energy losses in passive material in front of a calorimeter based on the massless gap'' idea. I use a flexible geometry model of a calorimeter design for SDC outside of a solenoidal coil made of aluminium cylinders of adjustable thickness. The signal from the first radiation length of active calorimetry is scaled dependent on the incoming and observed energies of the shower. A reasonable recovery of the resolution of an unobstructed calorimeter is achieved using correction factors that depend only upon the total thickness of passive material. Thus a useful correction may be built into the hardware by increasing the amount of scintillator in the first radiation length of the active calorimeter. The distribution of correction factors determined event-by-event indicate that an additional dependence on the observed signal in the massless gap and total incident energy is clearly present.

Authors:
Publication Date:
Research Org.:
Argonne National Lab., IL (United States). High Energy Physics Div.
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
5450875
Report Number(s):
ANL/HEP/TR-92/06; SDC-92-187
ON: DE92011210
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; SHOWER COUNTERS; MODIFICATIONS; CORRECTIONS; DESIGN; ENERGY LOSSES; ENERGY RESOLUTION; STANFORD LINEAR COLLIDER DETECTOR; LOSSES; MEASURING INSTRUMENTS; RADIATION DETECTORS; RESOLUTION; 440104* - Radiation Instrumentation- High Energy Physics Instrumentation

Citation Formats

Trost, H J. On the massless gap'' adjustment of detected energy for passive material in front of a calorimeter. United States: N. p., 1992. Web. doi:10.2172/5450875.
Trost, H J. On the massless gap'' adjustment of detected energy for passive material in front of a calorimeter. United States. https://doi.org/10.2172/5450875
Trost, H J. 1992. "On the massless gap'' adjustment of detected energy for passive material in front of a calorimeter". United States. https://doi.org/10.2172/5450875. https://www.osti.gov/servlets/purl/5450875.
@article{osti_5450875,
title = {On the massless gap'' adjustment of detected energy for passive material in front of a calorimeter},
author = {Trost, H J},
abstractNote = {I have designed a correction scheme for energy losses in passive material in front of a calorimeter based on the massless gap'' idea. I use a flexible geometry model of a calorimeter design for SDC outside of a solenoidal coil made of aluminium cylinders of adjustable thickness. The signal from the first radiation length of active calorimetry is scaled dependent on the incoming and observed energies of the shower. A reasonable recovery of the resolution of an unobstructed calorimeter is achieved using correction factors that depend only upon the total thickness of passive material. Thus a useful correction may be built into the hardware by increasing the amount of scintillator in the first radiation length of the active calorimeter. The distribution of correction factors determined event-by-event indicate that an additional dependence on the observed signal in the massless gap and total incident energy is clearly present.},
doi = {10.2172/5450875},
url = {https://www.osti.gov/biblio/5450875}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 31 00:00:00 EST 1992},
month = {Fri Jan 31 00:00:00 EST 1992}
}