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RPC DPG Results 2020

RPC DPG Results 2020
UPGRADE
- Longevity study & HF production in CMS-RPC - twiki with plots (Andrea Gelmi)

RPC Threshold Scan Analysis (Walaa Elmetenawee, Roumyana)

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Presented on

Introduction

Every CMS RPC chamber is subdivided in three eta partitions (rolls) in the endcap and in two or three eta partitions in the barrel. The LV thresholds applied to the detector electronics are studied in terms of the effect on the main detector characteristics - efficiency, cluster size and detector intrinsic noise rate. The default thresholds differ for the particular roll and Front-end electronics and they are stored in the configuration database. The usual range of the threshold values is within 210-240 mV, where 1 mV corresponds to about 3.2 fC. [1]

The threshold scan is performed during normal cosmics data taking in 2018. The scan was performed in steps of 5 mV. Because of the low statistics in the endcap region, the analysis is focused mainly on the barrel rolls.

[1] M. Abbrescia et al., "New developments on front-end electronics for the CMS Resistive Plate Chambers", Nucl. Instr. and Meth. in Phys. Res., Volume 456, Issues 1-2, 21 December 2000, Pages 143-149

The Effect on the efficiency


The plots show the RPC efficiency vs. the difference with the default threshold (Vthr-app-Vthr-def). One roll for the barrel (left) and one for the endcap (right) are shown. Due to the low statistics in the endcap, a detailed study was possible in the barrel region only. Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

The plots show the RPC efficiency vs. the difference with the default threshold (Vthr-app-Vthr-def). One roll for the barrel (left) and one for the endcap (right) are shown. Due to the low statistics in the endcap, a detailed study was possible in the barrel region only. Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch


The plot shows the RPC barrel efficiency distribution at the different applied thresholds of the voltage scan. Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch	The plot shows the efficiency variation when decreasing the threshold voltage by 5 mV, which results in an efficiency gain of about 0.9% in the barrel. The single entries with very high differences are caused by low statistics. Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch


The plots show the efficiency variation when decreasing the threshold voltage by 5 mV, which results in an efficiency gain of about 0.7% and 1.6% for the rolls from the innermost (closest to the beam pipe) RPC barrel layer RB1in (left), and for the outermost one - RB4 (right) respectively. Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

The plots show the efficiency variation when decreasing the threshold voltage by 5 mV, which results in an efficiency gain of about 0.7% and 1.6% for the rolls from the innermost (closest to the beam pipe) RPC barrel layer RB1in (left), and for the outermost one - RB4 (right) respectively. Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

The Effect on the Cluster Size


The plots show the RPC Cluster size vs. the difference with the default threshold(Vthr-app-Vthr-def) for one roll in the barrel (left) and one in the endcap (right). Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

The plots show the RPC Cluster size vs. the difference with the default threshold(Vthr-app-Vthr-def) for one roll in the barrel (left) and one in the endcap (right). Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch


The plot shows the RPC Cluster size distribution at the different applied thresholds of the voltage scan. Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch	The plot shows the variation in the Cluster size when decreasing the threshold voltage by 5 mV, which results in a slight cluster size increase of a bout 0.068 in the barrel. Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch


The plots show the Cluster size variation when decreasing the threshold voltage by 5 mV, which results in a slight cluster size increase of a bout 0.064 and 0.047 strips for the rolls from the innermost (closest to the beam pipe) RPC barrel layer RB1in (left) and for the outermost one - RB4 (right) respectively. Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

The plots show the Cluster size variation when decreasing the threshold voltage by 5 mV, which results in a slight cluster size increase of a bout 0.064 and 0.047 strips for the rolls from the innermost (closest to the beam pipe) RPC barrel layer RB1in (left) and for the outermost one - RB4 (right) respectively. Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

The Effect on the intrinsic noise rate


The plots show the intrinsic noise rate vs. the difference with the default threshold (Vthr-app-Vthr-def) for one roll in the barrel (left) and one in the endcap (right). Quadratic polynomial function is used for the fit. Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

The plots show the intrinsic noise rate vs. the difference with the default threshold (Vthr-app-Vthr-def) for one roll in the barrel (left) and one in the endcap (right). Quadratic polynomial function is used for the fit. Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch


The plot shows the variation of the rate when decreasing the threshold voltage by 5 mV. Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

The plot shows the variation of the rate when decreasing the threshold voltage by 5 mV. Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

RPC Run-II Performance Efficiency 2D Plots (Heewon Lee)

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Presented on

General Muon Meeting (GMM) on 13 January 2020

https://indico.cern.ch/event/876027/

Slides

https://indico.cern.ch/event/876027/contributions/3694984/attachments/1968074/3273060/200106RPCPerformance2DPlotApproval_gmm.pdf

Introduction

Plot approval for RPC Run-II performance paper
Performance results using Tag & Probe method with track extrapolation
Efficiency 2D plots for 2015–2018
- Efficiency 2D plots of each rolls (Barrel roll, Endcap + and – roll)
- 4 years * 3rolls = 12 plots for approval

2015 Efficiency 2D plot of Barrel rolls

	This figure shows the 2015 efficiency of barrel RPC chambers, in longitudinal direction z and azimuthal angle φ of expected impact region of muons. Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed. Efficiency was obtained using the Tag-and-Probe method with single muon triggered dataset. Probe muons are reconstructed using the tracker muon algorithm which is independent to RPC system, requiring at least one segment to be matched in local x position within 3cm and pull 3. Probe muons are also required to have at least 10GeV in transverse momentum. The regions with black color correspond to the chambers without any RPC hits, caused by the known hardware problems(ex. chambers with gas leak problems). There are regions with lower efficiency due to the inactive regions induced by spacers, boundaries of chambers or masked readout strips. pdf file Run2015 barrel Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

This figure shows the 2015 efficiency of barrel RPC chambers, in longitudinal direction z and azimuthal angle φ of expected impact region of muons.

Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed.

Efficiency was obtained using the Tag-and-Probe method with single muon triggered dataset. Probe muons are reconstructed using the tracker muon algorithm which is independent to RPC system, requiring at least one segment to be matched in local x position within 3cm and pull 3. Probe muons are also required to have at least 10GeV in transverse momentum.

The regions with black color correspond to the chambers without any RPC hits, caused by the known hardware problems(ex. chambers with gas leak problems). There are regions with lower efficiency due to the inactive regions induced by spacers, boundaries of chambers or masked readout strips.

pdf file Run2015 barrel

Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

2016 Efficiency 2D plot of Barrel rolls

	This figure shows the 2016 efficiency of barrel RPC chambers, in longitudinal direction z and azimuthal angle φ of expected impact region of muons. Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed. Efficiency was obtained using the Tag-and-Probe method with single muon triggered dataset. Probe muons are reconstructed using the tracker muon algorithm which is independent to RPC system, requiring at least one segment to be matched in local x position within 3cm and pull 3. Probe muons are also required to have at least 10GeV in transverse momentum. The regions with black color correspond to the chambers without any RPC hits, caused by the known hardware problems(ex. chambers with gas leak problems). There are regions with lower efficiency due to the inactive regions induced by spacers, boundaries of chambers or masked readout strips. pdf file Run2016 barrel Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

This figure shows the 2016 efficiency of barrel RPC chambers, in longitudinal direction z and azimuthal angle φ of expected impact region of muons.

Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed.

pdf file Run2016 barrel

Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

2017 Efficiency 2D plot of Barrel rolls

	This figure shows the 2017 efficiency of barrel RPC chambers, in longitudinal direction z and azimuthal angle φ of expected impact region of muons. Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed. Efficiency was obtained using the Tag-and-Probe method with single muon triggered dataset. Probe muons are reconstructed using the tracker muon algorithm which is independent to RPC system, requiring at least one segment to be matched in local x position within 3cm and pull 3. Probe muons are also required to have at least 10GeV in transverse momentum. The regions with black color correspond to the chambers without any RPC hits, caused by the known hardware problems(ex. chambers with gas leak problems). There are regions with lower efficiency due to the inactive regions induced by spacers, boundaries of chambers or masked readout strips. pdf file Run2017 barrel Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

This figure shows the 2017 efficiency of barrel RPC chambers, in longitudinal direction z and azimuthal angle φ of expected impact region of muons.

Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed.

pdf file Run2017 barrel

Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

2018 Efficiency 2D plot of Barrel rolls

	This figure shows the 2018 efficiency of barrel RPC chambers, in longitudinal direction z and azimuthal angle φ of expected impact region of muons. Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed. Efficiency was obtained using the Tag-and-Probe method with single muon triggered dataset. Probe muons are reconstructed using the tracker muon algorithm which is independent to RPC system, requiring at least one segment to be matched in local x position within 3cm and pull 3. Probe muons are also required to have at least 10GeV in transverse momentum. The regions with black color correspond to the chambers without any RPC hits, caused by the known hardware problems(ex. chambers with gas leak problems). There are regions with lower efficiency due to the inactive regions induced by spacers, boundaries of chambers or masked readout strips. pdf file Run2018 barrel Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

This figure shows the 2018 efficiency of barrel RPC chambers, in longitudinal direction z and azimuthal angle φ of expected impact region of muons.

Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed.

pdf file Run2018 barrel

Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

2015 Efficiency 2D plot of Endcap+ rolls

	This figure shows the 2015 efficiency of endcap+ RPC chambers, in the x-y coordinate of expected impact region of muons. Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed. Efficiency was obtained using the Tag-and-Probe method with single muon triggered dataset. Probe muons are reconstructed using the tracker muon algorithm which is independent to RPC system, requiring at least one segment to be matched in local x position within 3cm and pull 3. Probe muons are also required to have at least 10GeV in transverse momentum. The regions with black color correspond to the chambers without any RPC hits, caused by the known hardware problems(ex. chambers with gas leak or LV problems). There are regions with lower efficiency due to the inactive regions induced by spacers, boundaries of chambers or masked readout strips. pdf file Run2015 endcap+ Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

This figure shows the 2015 efficiency of endcap+ RPC chambers, in the x-y coordinate of expected impact region of muons.

Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed.

The regions with black color correspond to the chambers without any RPC hits, caused by the known hardware problems(ex. chambers with gas leak or LV problems). There are regions with lower efficiency due to the inactive regions induced by spacers, boundaries of chambers or masked readout strips.

pdf file Run2015 endcap+

Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

2016 Efficiency 2D plot of Endcap+ rolls

	This figure shows the 2016 efficiency of endcap+ RPC chambers, in the x-y coordinate of expected impact region of muons. Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed. Efficiency was obtained using the Tag-and-Probe method with single muon triggered dataset. Probe muons are reconstructed using the tracker muon algorithm which is independent to RPC system, requiring at least one segment to be matched in local x position within 3cm and pull 3. Probe muons are also required to have at least 10GeV in transverse momentum. The regions with black color correspond to the chambers without any RPC hits, caused by the known hardware problems(ex. chambers with gas leak or LV problems). There are regions with lower efficiency due to the inactive regions induced by spacers, boundaries of chambers or masked readout strips. pdf file Run2016 endcap+ Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

This figure shows the 2016 efficiency of endcap+ RPC chambers, in the x-y coordinate of expected impact region of muons.

Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed.

pdf file Run2016 endcap+

Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

2017 Efficiency 2D plot of Endcap+ rolls

	This figure shows the 2017 efficiency of endcap+ RPC chambers, in the x-y coordinate of expected impact region of muons. Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed. Efficiency was obtained using the Tag-and-Probe method with single muon triggered dataset. Probe muons are reconstructed using the tracker muon algorithm which is independent to RPC system, requiring at least one segment to be matched in local x position within 3cm and pull 3. Probe muons are also required to have at least 10GeV in transverse momentum. The regions with black color correspond to the chambers without any RPC hits, caused by the known hardware problems(ex. chambers with gas leak or LV problems). There are regions with lower efficiency due to the inactive regions induced by spacers, boundaries of chambers or masked readout strips. pdf file Run2017 endcap+ Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

This figure shows the 2017 efficiency of endcap+ RPC chambers, in the x-y coordinate of expected impact region of muons.

Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed.

pdf file Run2017 endcap+

Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

2018 Efficiency 2D plot of Endcap+ rolls

	This figure shows the 2018 efficiency of endcap+ RPC chambers, in the x-y coordinate of expected impact region of muons. Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed. Efficiency was obtained using the Tag-and-Probe method with single muon triggered dataset. Probe muons are reconstructed using the tracker muon algorithm which is independent to RPC system, requiring at least one segment to be matched in local x position within 3cm and pull 3. Probe muons are also required to have at least 10GeV in transverse momentum. The regions with black color correspond to the chambers without any RPC hits, caused by the known hardware problems(ex. chambers with gas leak or LV problems). There are regions with lower efficiency due to the inactive regions induced by spacers, boundaries of chambers or masked readout strips. pdf file Run2018 endcap+ Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

This figure shows the 2018 efficiency of endcap+ RPC chambers, in the x-y coordinate of expected impact region of muons.

Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed.

pdf file Run2018 endcap+

Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

2015 Efficiency 2D plot of Endcap- rolls

	This figure shows the 2015 efficiency of endcap- RPC chambers, in the x-y coordinate of expected impact region of muons. Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed. Efficiency was obtained using the Tag-and-Probe method with single muon triggered dataset. Probe muons are reconstructed using the tracker muon algorithm which is independent to RPC system, requiring at least one segment to be matched in local x position within 3cm and pull 3. Probe muons are also required to have at least 10GeV in transverse momentum. The regions with black color correspond to the chambers without any RPC hits, caused by the known hardware problems(ex. chambers with gas leak or LV problems). There are regions with lower efficiency due to the inactive regions induced by spacers, boundaries of chambers or masked readout strips. pdf file Run2015 endcap- Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

This figure shows the 2015 efficiency of endcap- RPC chambers, in the x-y coordinate of expected impact region of muons.

Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed.

pdf file Run2015 endcap-

Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

2016 Efficiency 2D plot of Endcap- rolls

	This figure shows the 2016 efficiency of endcap- RPC chambers, in the x-y coordinate of expected impact region of muons. Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed. Efficiency was obtained using the Tag-and-Probe method with single muon triggered dataset. Probe muons are reconstructed using the tracker muon algorithm which is independent to RPC system, requiring at least one segment to be matched in local x position within 3cm and pull 3. Probe muons are also required to have at least 10GeV in transverse momentum. The regions with black color correspond to the chambers without any RPC hits, caused by the known hardware problems(ex. chambers with gas leak or LV problems). There are regions with lower efficiency due to the inactive regions induced by spacers, boundaries of chambers or masked readout strips. pdf file Run2016 endcap- Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

This figure shows the 2016 efficiency of endcap- RPC chambers, in the x-y coordinate of expected impact region of muons.

Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed.

pdf file Run2016 endcap-

Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

2017 Efficiency 2D plot of Endcap- rolls

	This figure shows the 2017 efficiency of endcap- RPC chambers, in the x-y coordinate of expected impact region of muons. Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed. Efficiency was obtained using the Tag-and-Probe method with single muon triggered dataset. Probe muons are reconstructed using the tracker muon algorithm which is independent to RPC system, requiring at least one segment to be matched in local x position within 3cm and pull 3. Probe muons are also required to have at least 10GeV in transverse momentum. The regions with black color correspond to the chambers without any RPC hits, caused by the known hardware problems(ex. chambers with gas leak or LV problems). There are regions with lower efficiency due to the inactive regions induced by spacers, boundaries of chambers or masked readout strips. pdf file Run2017 endcap- Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

This figure shows the 2017 efficiency of endcap- RPC chambers, in the x-y coordinate of expected impact region of muons.

Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed.

pdf file Run2017 endcap-

Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

2018 Efficiency 2D plot of Endcap- rolls

	This figure shows the 2018 efficiency of endcap- RPC chambers, in the x-y coordinate of expected impact region of muons. Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed. Efficiency was obtained using the Tag-and-Probe method with single muon triggered dataset. Probe muons are reconstructed using the tracker muon algorithm which is independent to RPC system, requiring at least one segment to be matched in local x position within 3cm and pull 3. Probe muons are also required to have at least 10GeV in transverse momentum. The regions with black color correspond to the chambers without any RPC hits, caused by the known hardware problems(ex. chambers with gas leak or LV problems). There are regions with lower efficiency due to the inactive regions induced by spacers, boundaries of chambers or masked readout strips. pdf file Run2018 endcap- Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

This figure shows the 2018 efficiency of endcap- RPC chambers, in the x-y coordinate of expected impact region of muons.

Each point correspond to roll efficiency. Data points with low statistics or temporary problems are removed.

pdf file Run2018 endcap-

Contact: cms-dpg-conveners-rpc@cernNOSPAMPLEASE.ch

RPC Phase-2 Expected Background RPC-BRIL (Roumyana Hadjiiska)

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Presented on General Muon Meeting (GMM) on 13 January 2020. Slides

Introduction

RPC expected background has been studied using MC prediction with CMS FLUKA simulation of the detector cavern. Latest Phase-2 geometry v.3.7.20.0 has been used. The present FLUKA geometry describes third and forth RPC stations (RE3 and RE4) up to |η|<1.9 and does not include the RPC upgrade between 1.9 < |η|< 2.4. The presented results will be updated accordingly after an update of the FLUKA geometry description.

The background has been studied in terms of expected particle rates, integrated dose and fluence. Two sets of detector sensitivities [1, 2] have been applied – for iRPC and for the present RPC system. The particle fluxes, predicted by FLUKA, have been convoluted with the RPC sensitivities for a given particle type to obtain the hit rate.

The base HL-LHC (High Luminosity LHC) scenario – expected instantaneous luminosity of 5x10³⁴ cm^-2s^-1 and integrated luminosity of 3000fb^-1, has been compared to the ultimate scenario where the expected instantaneous and integrated luminosity are respectively 7.5x10³⁴ cm^-2s^-1 and 4000fb^-1.

Estimations included SF (Safety factor) of 3 have been added in the captions. However the systematic uncertainty is yet to be fully qualified.

[1] C. Uribe Estrada, S. Carpinteyro Bernardino, A. Castaneda Hernandez for CMS Collaboration, RPC radiation background simulations for the high luminosity phase in the CMS experiment, Journal of Instrumentation, Volume 14, September 2019;

[2] A. Gelmi, E.Voevodina on behalf of the CMS Collaboration, "Background rate study for the CMS improved-RPC at HL-LHC usingGEANT4" NIMA Volume 936, 21 August 2019, Pages 430-432

	Detector regions investigated: ● The third and fourth endcap stations, RE3/1 and RE4/1 – first rings of the RE3 and RE4 (Upgrade Project) ● Present chambers on RE3/23 and RE4/23- second and third ring of the RE3 and RE4 ● The balcony region, where the Electronics (Link System) RPC racks are installed (in the range is 750 < R < 800).

Detector regions investigated:

● The third and fourth endcap stations, RE3/1 and RE4/1 – first rings of the RE3 and RE4 (Upgrade Project)

● Present chambers on RE3/23 and RE4/23- second and third ring of the RE3 and RE4

● The balcony region, where the Electronics (Link System) RPC racks are installed (in the range is 750 < R < 800).

Expected rates in RE3.1 and RE4.1 Base HL-LHC scenario: L = 5x10³⁴ cm^-2s^-1


RPC hit rates, expected at instantaneous luminosity of 5x10³⁴cm^-2s^-1 in the upgrade RE3/1 (on the left) and RE4/1 (on the right) regions are shown. All values are averaged over φ. Averaged expected RE3/1 hit rate is ~660 Hz/cm², including SF of 3, it is ~ 2000 Hz/cm². For RE4/1 the averaged expected rate is ~500 Hz/cm². Including SF of 3 it is ~ 1600 Hz/cm². Per strip: The expected rate per RE3/1 strip in the range (150 cm <=R <=320) is ~93 kHz. Including SF of 3 it is about 280 kHz or 0.007 [hits/bx]. The expected rate per RE4/1 strip in the range (180 cm <=R <=320) is ~68 kHz. Including SF of 3 it is about 204 kHz or 0.005 [hits/bx]. The systematic uncertainty is yet to be fully qualified. C file RE3/1 C file RE4/1 Contact: cms-dpg-conveners-rpc@SPAMNOTcernNOSPAMPLEASE.ch

RPC hit rates, expected at instantaneous luminosity of 5x10³⁴cm^-2s^-1 in the upgrade RE3/1 (on the left) and RE4/1 (on the right) regions are shown. All values are averaged over φ. Averaged expected RE3/1 hit rate is ~660 Hz/cm², including SF of 3, it is ~ 2000 Hz/cm². For RE4/1 the averaged expected rate is ~500 Hz/cm². Including SF of 3 it is ~ 1600 Hz/cm². Per strip: The expected rate per RE3/1 strip in the range (150 cm <=R <=320) is ~93 kHz. Including SF of 3 it is about 280 kHz or 0.007 [hits/bx]. The expected rate per RE4/1 strip in the range (180 cm <=R <=320) is ~68 kHz. Including SF of 3 it is about 204 kHz or 0.005 [hits/bx]. The systematic uncertainty is yet to be fully qualified. C file RE3/1 C file RE4/1 Contact: cms-dpg-conveners-rpc@SPAMNOTcernNOSPAMPLEASE.ch

Expected rates in RE3.1 and RE4.1 Ultimate HL-LHC scenario: L = 7.5x10³⁴ cm^-2s^-1


RPC hit rates, expected at instantaneous luminosity of 7.5x10³⁴cm^-2s^-1 in the upgrade RE3/1 (on the left) and RE4/1 (on the right) regions are shown. All values are averaged over φ. Averaged expected RE3/1 hit rate is ~1000 Hz/cm², including SF of 3, it is ~ 3000 Hz/cm². For RE4/1 the averaged expected rate is ~800 Hz/cm². Including SF of 3 it is ~ 2400 Hz/cm². Per strip: The expected rate per RE3/1 strip in the range (150 cm <=R <=320) is ~140 kHz. Including SF of 3 it is about 420 kHz or 0.011 [hits/bx]. The expected rate per RE4/1 strip in the range (180 cm <=R <=320) is ~102 kHz. Including SF of 3 it is about 306 kHz or 0.008 [hits/bx]. The systematic uncertainty is yet to be fully qualified. C file RE3/1 C file RE4/1 Contact: cms-dpg-conveners-rpc@SPAMNOTcernNOSPAMPLEASE.ch

RPC hit rates, expected at instantaneous luminosity of 7.5x10³⁴cm^-2s^-1 in the upgrade RE3/1 (on the left) and RE4/1 (on the right) regions are shown. All values are averaged over φ. Averaged expected RE3/1 hit rate is ~1000 Hz/cm², including SF of 3, it is ~ 3000 Hz/cm². For RE4/1 the averaged expected rate is ~800 Hz/cm². Including SF of 3 it is ~ 2400 Hz/cm². Per strip: The expected rate per RE3/1 strip in the range (150 cm <=R <=320) is ~140 kHz. Including SF of 3 it is about 420 kHz or 0.011 [hits/bx]. The expected rate per RE4/1 strip in the range (180 cm <=R <=320) is ~102 kHz. Including SF of 3 it is about 306 kHz or 0.008 [hits/bx]. The systematic uncertainty is yet to be fully qualified. C file RE3/1 C file RE4/1 Contact: cms-dpg-conveners-rpc@SPAMNOTcernNOSPAMPLEASE.ch

Expected rates in RE3/2&3 and RE4/2&3 Base HL-LHC scenario: L = 5x10³⁴ cm^-2s^-1


RPC hit rates, expected at instantaneous luminosity of 5x10³⁴cm^-2s^-1 in the present RE3/2&3 (on the left) and RE4/2&3 (on the right) regions are shown. All values are averaged over φ. Averaged expected RE3/2 and RE3/3 hit rates are ~135 Hz/cm² and 70 Hz/cm² respectively. Including SF of 3 they are ~ 410 Hz/cm² and 210 Hz/cm². Averaged expected RE4/2 and RE4/3 hit rates are ~180 Hz/cm² and 120 Hz/cm² respectively. Including SF of 3 they are ~ 540 Hz/cm² and 360 Hz/cm². The systematic uncertainty is yet to be fully qualified. C file RE3 C file RE4 Contact: cms-dpg-conveners-rpc@SPAMNOTcernNOSPAMPLEASE.ch

RPC hit rates, expected at instantaneous luminosity of 5x10³⁴cm^-2s^-1 in the present RE3/2&3 (on the left) and RE4/2&3 (on the right) regions are shown. All values are averaged over φ. Averaged expected RE3/2 and RE3/3 hit rates are ~135 Hz/cm² and 70 Hz/cm² respectively. Including SF of 3 they are ~ 410 Hz/cm² and 210 Hz/cm². Averaged expected RE4/2 and RE4/3 hit rates are ~180 Hz/cm² and 120 Hz/cm² respectively. Including SF of 3 they are ~ 540 Hz/cm² and 360 Hz/cm². The systematic uncertainty is yet to be fully qualified. C file RE3 C file RE4 Contact: cms-dpg-conveners-rpc@SPAMNOTcernNOSPAMPLEASE.ch

Expected rates in RE3/2&3 and RE4/2&3 Ultimate HL-LHC scenario: L = 7.5x10³⁴ cm^-2s^-1


RPC hit rates, expected at instantaneous luminosity of 7.5x10³⁴cm^-2s^-1 in the present RE3/2&3 (on the left) and RE4/2&3 (on the right) regions are shown. All values are averaged over φ. Averaged expected RE3/2 and RE3/3 hit rates are ~200 Hz/cm² and 100 Hz/cm² respectively. Including SF of 3 they are ~ 600 Hz/cm² and 300 Hz/cm². Averaged expected RE4/2 and RE4/3 hit rates are ~260 Hz/cm² and 180 Hz/cm² respectively. Including SF of 3 they are ~ 780 Hz/cm² and 540 Hz/cm². The systematic uncertainty is yet to be fully qualified. C file RE3 C file RE4 Contact: cms-dpg-conveners-rpc@SPAMNOTcernNOSPAMPLEASE.ch

RPC hit rates, expected at instantaneous luminosity of 7.5x10³⁴cm^-2s^-1 in the present RE3/2&3 (on the left) and RE4/2&3 (on the right) regions are shown. All values are averaged over φ. Averaged expected RE3/2 and RE3/3 hit rates are ~200 Hz/cm² and 100 Hz/cm² respectively. Including SF of 3 they are ~ 600 Hz/cm² and 300 Hz/cm². Averaged expected RE4/2 and RE4/3 hit rates are ~260 Hz/cm² and 180 Hz/cm² respectively. Including SF of 3 they are ~ 780 Hz/cm² and 540 Hz/cm². The systematic uncertainty is yet to be fully qualified. C file RE3 C file RE4 Contact: cms-dpg-conveners-rpc@SPAMNOTcernNOSPAMPLEASE.ch

Expected absorbed dose in iRPC. Base (3000 fb/cm^-1) vs Ultimate (4000 fb/cm^-1) HL-LHC scenario


Absorbed dose after collected 3000 fb/cm^-1 (in blue) and 4000 fb/cm^-1 (in red) is shown on the plots. Plot on the left represents RE3/1 region and the one on the right – RE4/1. All values are averaged over φ. The highest value at 165 cm is systematic and is caused by the geometry differences and larger Z bin (Z bin = 10 cm). Thus the value in the Z bin is averaged over RPC material and air. The average ratio between the values from the ultimate and base HL-LHC scenario is 1.33. Expected dose at R=303 cm for RE3/1 is ~10 (13.6) Gy, and at R=304 cm for RE4/1 it is about 18 (24) Gy, where R=303 (304)cm are the expected FEB positions. Safety factor of 3 is not included. The systematic uncertainty is yet to be fully qualified. C file RE3/1 C file RE4/1 Contact: cms-dpg-conveners-rpc@SPAMNOTcernNOSPAMPLEASE.ch

Absorbed dose after collected 3000 fb/cm^-1 (in blue) and 4000 fb/cm^-1 (in red) is shown on the plots. Plot on the left represents RE3/1 region and the one on the right – RE4/1. All values are averaged over φ. The highest value at 165 cm is systematic and is caused by the geometry differences and larger Z bin (Z bin = 10 cm). Thus the value in the Z bin is averaged over RPC material and air. The average ratio between the values from the ultimate and base HL-LHC scenario is 1.33. Expected dose at R=303 cm for RE3/1 is ~10 (13.6) Gy, and at R=304 cm for RE4/1 it is about 18 (24) Gy, where R=303 (304)cm are the expected FEB positions. Safety factor of 3 is not included. The systematic uncertainty is yet to be fully qualified. C file RE3/1 C file RE4/1 Contact: cms-dpg-conveners-rpc@SPAMNOTcernNOSPAMPLEASE.ch

Expected fluence in RPC system (3000 fb/cm^-1) vs Ultimate (4000 fb/cm^-1) HL-LHC scenario

|Expected fluence in terms of 1-MeV neutron equivalent in Si, after collected 3000 fb/cm^-1 (in blue) and 4000 fb/cm^-1 (in red) is shown on the plots. Plot on the left represents the upgrade iRPC region – RE3/1 and RE4/1 and on the right – the present RE3/2&3 and RE4/2&3. All values are averaged over φ. The average ratio between the ultimate and base HL-LHC scenario is 1.33. Expected fluence at R=303 cm for RE3/1 is ~4.3 (5.8) x10¹¹ n/cm², and at R=304 cm for RE4/1 it is about 6.2 (8.2) x10¹¹ n/cm², where R=303 (304)cm are the expected FEB positions. Safety factor of 3 is not included. The systematic uncertainty is yet to be fully qualified. C file iRPC C file RPC Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch|

Expected absorbed dose and fluence at HL-LHC in the Balcony region

|The expected absorbed dose in the balcony region after collected 3000 (4000) fb/cm^-1 is shown on the left plot. All values are averaged over φ. The average ratio between the ultimate and base HL-LHC scenario is 1.33. Maximum expected integrated dose for the barrel (Z,600 cm) is about 1.5 (2) Gy, while for the endcap (Z>600 cm) the highest expectations are below 10 Gy. Two points above this value are caused by statistical fluctuations. Plot on the right shows the expected neutron fluence after collected 3000 fb/cm^-1. The highest contribution is from the neutrons with E<20 MeV. Maximum expected fluence for the barrel (Z<600 cm) is below 350x10⁹ n/cm², while for the endcap (Z>600 cm) the highest expectations are about 800x10⁹ n/cm². The values in the Z bin are averaged over detector material and air. The systematic uncertainty is yet to be fully qualified. C file Dose-Balcony C file Fluence-Balcony Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch|

UPGRADE

Longevity study & HF production in CMS-RPC - twiki with plots (Andrea Gelmi)

-- AndresCabrera - 2020-01-14

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
png	2015n.png	r1	manage	233.1 K	2020-01-15 - 12:47	AndresCabrera
png	2015p.png	r1	manage	234.9 K	2020-01-15 - 12:48	AndresCabrera
png	2016n.png	r1	manage	233.1 K	2020-01-15 - 12:47	AndresCabrera
png	2016p.png	r1	manage	237.2 K	2020-01-15 - 12:48	AndresCabrera
png	2017n.png	r1	manage	234.2 K	2020-01-15 - 12:47	AndresCabrera
png	2017p.png	r1	manage	238.1 K	2020-01-15 - 12:48	AndresCabrera
png	2018n.png	r1	manage	239.1 K	2020-01-15 - 12:47	AndresCabrera
png	2018p.png	r1	manage	240.6 K	2020-01-15 - 12:48	AndresCabrera
pdf	Run2015_cRB.pdf	r1	manage	46.8 K	2020-01-17 - 06:03	HeewonLee	2015 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
png	Run2015_cRB.png	r1	manage	24.3 K	2020-01-17 - 06:03	HeewonLee	2015 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
pdf	Run2015_cREN.pdf	r1	manage	44.8 K	2020-01-17 - 06:03	HeewonLee	2015 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
png	Run2015_cREN.png	r1	manage	32.7 K	2020-01-17 - 06:03	HeewonLee	2015 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
pdf	Run2015_cREP.pdf	r1	manage	44.9 K	2020-01-17 - 06:03	HeewonLee	2015 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
png	Run2015_cREP.png	r1	manage	33.9 K	2020-01-17 - 06:03	HeewonLee	2015 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
pdf	Run2016_cRB.pdf	r1	manage	46.8 K	2020-01-17 - 06:05	HeewonLee	2016 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
png	Run2016_cRB.png	r1	manage	24.2 K	2020-01-17 - 06:05	HeewonLee	2016 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
pdf	Run2016_cREN.pdf	r1	manage	44.9 K	2020-01-17 - 06:05	HeewonLee	2016 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
png	Run2016_cREN.png	r1	manage	33.0 K	2020-01-17 - 06:05	HeewonLee	2016 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
pdf	Run2016_cREP.pdf	r1	manage	45.0 K	2020-01-17 - 06:05	HeewonLee	2016 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
png	Run2016_cREP.png	r1	manage	34.8 K	2020-01-17 - 06:05	HeewonLee	2016 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
pdf	Run2017_cRB.pdf	r1	manage	46.7 K	2020-01-17 - 06:06	HeewonLee	2017 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
png	Run2017_cRB.png	r1	manage	24.0 K	2020-01-17 - 06:06	HeewonLee	2017 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
pdf	Run2017_cREN.pdf	r1	manage	44.8 K	2020-01-17 - 06:06	HeewonLee	2017 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
png	Run2017_cREN.png	r1	manage	33.3 K	2020-01-17 - 06:06	HeewonLee	2017 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
pdf	Run2017_cREP.pdf	r1	manage	45.0 K	2020-01-17 - 06:06	HeewonLee	2017 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
png	Run2017_cREP.png	r1	manage	34.3 K	2020-01-17 - 06:06	HeewonLee	2017 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
pdf	Run2018_cRB.pdf	r1	manage	46.9 K	2020-01-17 - 06:06	HeewonLee	2018 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
png	Run2018_cRB.png	r1	manage	24.2 K	2020-01-17 - 06:06	HeewonLee	2018 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
pdf	Run2018_cREN.pdf	r1	manage	45.0 K	2020-01-17 - 06:06	HeewonLee	2018 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
png	Run2018_cREN.png	r1	manage	34.2 K	2020-01-17 - 06:06	HeewonLee	2018 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
pdf	Run2018_cREP.pdf	r1	manage	45.1 K	2020-01-17 - 06:06	HeewonLee	2018 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
png	Run2018_cREP.png	r1	manage	35.8 K	2020-01-17 - 06:06	HeewonLee	2018 RPC Efficiency 2D Plots by Barrel roll, Endcap+ roll and Endcap - roll
png	balconies.png	r1	manage	382.3 K	2020-01-15 - 13:13	AndresCabrera
png	clu1.png	r1	manage	65.9 K	2020-01-14 - 23:48	AndresCabrera
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png	dose.png	r1	manage	198.5 K	2020-01-15 - 13:14	AndresCabrera
png	efi20152d.png	r1	manage	161.9 K	2020-01-15 - 12:22	AndresCabrera
png	efi20162d.png	r1	manage	156.6 K	2020-01-15 - 12:22	AndresCabrera
png	efi20172d.png	r1	manage	155.8 K	2020-01-15 - 12:22	AndresCabrera
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png	efirb1.png	r1	manage	97.2 K	2020-01-14 - 23:28	AndresCabrera
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png	fluence.png	r1	manage	363.8 K	2020-01-15 - 13:13	AndresCabrera
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c	fluence_iRPC.C	r1	manage	13.0 K	2020-01-28 - 13:04	RoumyanaHadjiiska
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png	l5.png	r1	manage	324.1 K	2020-01-15 - 13:15	AndresCabrera
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